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LinuxDays 2015: Practice 1

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all right good evening everybody I had the great pleasure to have you all here so you are at the Linux in practice costs 1 and if you do not want to go to the nex impact because when you add that your at the wrong place let let you know that to begin with I would like to go to the feed back you gave me from my last course which was the introduction to live cause know there's been entire page of feedback as just a few points I want to point out 1st of all has to thank
you all these who wrote so many nice things so reruns my heart I mean there's a lot of a lot of great feedback which encourages also good good advice had to go further from the following I would like to point out that the 1st is learn how to pronounce developed and its students I'm so sorry I know I am and French 1st a double of have developed if I say wrong again please just yell at me any and there's do you know what F FU stands for in the real world actually I do and just in the next so many
we'd abbreviations so you better get used them few for me means fast update on this machine B S means so block size yes means repeat something more means get me some text and less means get me some text as well as the you get
you and about for 2 hours you will see the world might change the expert that someone that I liked the penguin whoever so that you rock you understood everything you need to know about that finally there is thanks for a help please stop comparing always with religion by this I would like to talk to that person later on because I'm afraid that I might have heard some feelings there might be something deeper in it is theory so please come to me at the end of the course and explain to me what is wrong word of with religion because I'm not a very religious person so I'm afraid I heard feeling sometimes just tell me OK so it won't happen again and then there was a lot of the feedbacks about give us more content give us longer along presentation more details a set of I would like to point out 1 thing I am not a prophesy and this is most certainly not the lecture at Shamir ran student I just a random date is doing that because I like to and I don't have better not have any competences so this even though there's a lot of people sitting in a lecture hall is not lecture but it's more an interactive exchange where I'm telling you what I'm a enthusiastic about and you actually learning from that so you don't have to think that you have to do is take notes for like you do usually this is really highly attractive so I really pen in your feedback if I get a lot of questions from you that means go more into detail if I don't get anything back from you I will just assume it as the morning and then I will skip this I just saw move on to the next topic so topic is way too large to cover with you want to color things don't ask questions then we move on to get a lot of things done and if you want to cover deep things like more detailed sister question me until I have 1st succeeded giving the amount of detail you want OK I know there's a lot of people here you might be scared might decide to lift up your hand don't worry I'm just as scared as you or I have not met since there is studied so don't be afraid we all the same boat that's about it yeah by the way who got working Linux and in Solomon's while all right who was of who had a failed installation who could we not install Linux on now that's a rate of 0 90 percent quite happy that we had about 120 machines that we saw on on that particular day and all these 2 days FIL this course I it's gonna be based on this script or if you want to on images near my screen well that let me look at this way it so I don't I don't have to look at you all the time and the problem is that the that is because of the problem is that the screen is off we and they would have counted on that 1 so let's see and there's a website which use Linux box the the alternative LCH as you go to that website you will find
down if more down hear the course script I uploaded a few minutes ago is brand new and it's not finished yet and the sense of that might be errors in it and this is something we always keep progressing on the thing is about to you 2 years old so if you see something us a feedback immediately and will fix that for your pen so we're gonna start 1st it is not about the script and not what is the next best up environment based on an existing because you already know that we assume that you have been to our horses which you have done before we can start immediately the consul there anybody any questions about the graphical user interface so let's dive into the consul
and let you just open up a consul Fourier and point out some 14 thinks this is too high for me to reach so this on you get when you see a comes it's all big window and which everybody knows identity consul right to start up the launcher type in consul on KDE of effort I wouldn't K and even you can have it right away so account so you sees several thinks this is your name just username have new Linux machine becomes the at symbol and separated then the name of your machine which is here Linux PMC Q then the double plant and then known openSUSE it's a little different instead of having a dollar sign like amenable to system it has all this kind of sign and this is the location where you or currently act the tail then it just means you're at your home fold till the means home so you can feel at home see that and this is important because unlike a 5 minutes really gets to have a ball or a set of in the consuls the old the only indication you get forward this sort of occasion is detailed itself so we never 1st of all you have to type there are different ways to get at time 1 is this is just window was called the terminal this this or in a graphical user environment there is a sub window with the consul in and in that you have a shelf now shell is the program that actually is reader input and reacts to it so it might be starting programs on it might be doing some weird things whatever like chaining things you learn that or piping stuff and then there was that there is as well the TTY now the the the way so it's an environment that is text or leave us like when you don't have a graphic user interface would get as a consul and if you press sought to press control alt F 1 you will switch into TTY you can try that you on new machines so are you scared we get back it doesn't work try control all this student control this 2 and if you have a mac I have no clue what the key combination is and those who if you get set to a black window now yes OK so it's working actually you can come back with a control alt F 7 should bring you back to the graphical part geographical bought crashes of this will help you get things still some kind of interface you can deal with it to kill the graphical part or to reboot your system designed when something really really badly fails so that's that's a way to go usually you don't need that it usually happens in that race when you have to know when you have to use it so what we do is we work terminals my place I can press at 11 to maximize this terminal unfortunately have cut
to the left exactly 1 symbol and them have not figured out a way to to fix that you have to guess what the 1st lecture is I'll tell you if it's important yeah but the show the shell is what I told you will interpret your comments now they're different shells this batch on Wonderboom today's dash which is exactly like Bash but you're going to worsen is a different than the developer behind it now and you also have fish fishes for example what I use is called a friend the interactive shell but it has a little bit different ways of interacting for example if you tell type help it will get you a browser window open which explains who are how to use it said various set S H is and many many more shells that you can use and you don't have to explore bold stay there are many of them and the most important thing is that if you don't like the way to interact with the consul might have a look at the other ones for example fish offers more were better all the complete while you type it already gives his suggestions but now we gonna focus and bashed because bashes are pretty much the fact that the standard on under Linux machine and no 1 thing that will confuse you errors that Ctrl-C Ctrl-V is not working their control civil not copy something but if you do it this happens and this actually kills a comment so I can assure you very 1st command is absolutely useless unless you want to use a very big file efficiently commands yes and yes all it does is it repeats over and over and over again I can't history of of whatever you type so they goatsuckers hello and out it is not progress but because it's a story so full that the Windows cannot scale anymore and whatever goes to top is deleted automatically because it would all fill your computer I don't know how many thousand hellos or printed per 2nd that this motor will put the command basically dust it's it's good for example this you can later on used to create a big file because you can write all these fellows into a file more for testing now but I want to quit after Ctrl-C so in a
press Ctrl-C it it'll stop this is very important controls your friend to get you out of pretty much any bad situation the staff or cancel the holy copy phone to copy Hello it to the Clipboard books interesting so can double-click at and it has been copied and the paste it we can place was the middle click now on a typical Linux machine when you have what about this pressing both buttons at the same time on HP touched that is a lower 2 buttons will pasted so this looks like now maybe you don't like this by the way you can also use Ctrl-C to cancel the command have already started typing instead of backspacing integers press Ctrl-C gets deleted it will not shorten your history now what is important is that when you want to copy something you have a right click in the Council not in the TTY though you can right click it and you can say copy but it is a place so click will be a friend if you like the usual right now for those like the keyboard this control shifts so in that say I want to copy all this I say control shift C and the and it will copy paste just sarcastic the when any questions so that that is a very basic interaction no there's with this cold or heat s and no this time the F. does not stand for fast or yes I means read the manual alright Gray read the manual this is why the post to forum and you really really ask a dumb question someone really evil might actually saying that Atiyah that's something that you can google immediately our RTF M is the answer for like how I copy something a terminal you can go Google copy in terminal and you'll get immediately which you're looking for so don't waste your time and somebody else's time to ask this kind of obvious questions in a form or you get the as or and I have mean picture for that you want to see it is that a try to pick it up of Beyond
that should be working and see if I can make a lift this up so that can actually see what I'm doing kind of so various there's no this is so this is my real computers is is how
auction next this is the picture here
so this is large of system that is for more advanced users and this is the oratory how to use Arch Linux to write that works for any kind of Linux by the way but you can also ask for help if you want of course
so this is something more interesting we can I can show you this as soldiers when you're a normal user if you become the superuser which has I believe like this it becomes a dash the dash means that have you so as to be privileges on Windows uses this this and you know there's been window popping up do you want to execute this is administrator suggests and can use abuse and on the next on on openSUSE the next the comments who will do so you become a different user we indicate that in more detail a little bit later do worry about if there is a dash or if there is just the cell that larger than symbol because as to be is you can mess up your system we bat because you have the rights to do so as normal user system protects you kind of from doing the kind of things now I'm disabled RDF and where is the manual the manuals starts with man man does not stand for anything sexist exports just just means manual let's say I want to get a manual entry for yes yes documentation many yes will show you what it does there tells you have options that you can put your very can directly on matches string which is mass and yes hello or you can bring in some options and it will tell you more options and let me just on a
full-size this so you can say as an option help we can say version of these options are not very useful and demand pages about more you can navigate and this using your arrow keys or using page up page down no this is a very small man page there are huge man pages out there which can be several books BIC and the larger D is the more happy or because the more information you can get from that and always there will be Google if you don't understand the man had some are written in a very friendly way some are written to read difficult so your found out about man is always a good point to start but as you see they always come without copyright see all the law office address the graph sometimes they're really funny things written in them and programmers have actually sense of humor as well and how to quit is Q. press Q on your keyboard and you will counter that Atkinson and then everything in the consul is case-sensitive so if you type man it'll say it's not right if it man and then it will say what page you want so this means you have already reached a command man but the capital man will not bring you to the man page is OK sensitive well I guess I don't have to exchange work sensitivities and also things in the Council usually not reversible and once you have except that something it will be done on the go have happened and there is no controls that actually what controls that does it is in itself controls the controls that pauses the command so if you hit that it will not undo anything and control shift said won't help here if you do if you mess up something in the consul the the permanent VAT no they're more convicts while sort of more complex commands that you can try for example prior let's have a look at ch while model nominal is a text editor and it's not a graphical text like you used it but it's a text-based editor looks exists it so know in normal is not just It's not installed OK let's look at the picture measure 1st so that we can install non of to learn the package manager you may have figured out of French that's probably what us Ms. Hruska would have said last year a professor scholars changes semantics he would say pension-insurance loves you some 4-Mbit French have a look at each the page number the this is 29 it is my copy that as you see there's a figure on it which explains the same thing after explained during an introduction course on for those who have not been to that whole or so let me just give you a very quick overview of Vatican so how do you
do that you go the package manager is little program which have so cold forces yes there will be created in thanks phone have role but they're going major she tried lorch as well so this our sources on basically sources or online but you can also have them on a CD or or on a USB key this is just some kind of abstract thing and you know that you can get from the sources softer the sources and contains so-called packages on packages are basically a little pieces of software that can be a single softer or a bundle of software and you can install them on your system but then for the US so many many packages in many different sources sometimes you have to group them by the standard so-called repositories repositories or like channels 3 get softer from a repository is 1 of the sources that you can have that contains so and so many packages and every poll is what you have to deal with when you welcome created the package this is why I am confident this a more solid kind of shape know your package manager has a file plant in that follow you have sources declared and this is kind of a list with different reports and this tells the package mention whatsoever that you can get what packages from undervote worship impacts naturally and you can tell you then to install that I'm to put it down on your system for automatically or for example if there is a newer version wearable then on your system the backstretch will automatically updated for you on this considers any program that you've installed at APEC tension which for example on the system that I'm presenting today any cat and every software that is installed but then any questions about the theory all right so how does that work in real life they a huge amount of theory that we put we put in the script it will make more familiar that's something to turn this
off on that don't to your package manager is the a command actually on this is cold by zipper this fellow with wide examined and CIMPA usually needs to be executed as a privileged users may have 2 ways of doing that in a you Tiebissou and many tablet you want war there soon but soon do do is like as an administrator do the following commands services you know super it will open up our cans session as a privileged user and it will be stored Ziprin then and when it has terminated you become the normal user again and this will only happen with this process which is right great now there's different things we can do and I have to offer you a feature which is called autocomplete on the consul you pressed tap tap on your consul I I will show you well if the initial you all the possibilities they all or if they're really that many many will ask you if you really want to do so so at this time that you want yes or no to display 109 possibilities yes
I do want to and so these are all the everything that I can type now from those who does appear that would make sense sometimes it works always zipper tells the tale Spanish what possibilities there all but that does not necessary have to work another person nice program which helps out some programs don't provide that and if that doesn't work just shows you the directory can't of the current directory well now what is interesting for us is we referee fresh on note that refashion graph is the same thing ref is just a shortened version for people who don't like to type a lot from then on other thing or to show you is update install and remove no refresh there's you remember you probably remember this file which is the self the sources they have to be updated the bad attention has to know where it what what kind of softer is around It's an honor to update this file you can do so this command which is rest and then you will be prompted the past of course as you're doing something as a route and
it downloads the repositories this time it's 11 repositories and no sources that means you can get packages from 11 different places you can add repositories to assist system if you want to have more practice way will on you have to just be sure that you trust every single 1 of these 3 posts because you know your bags has with trust them automatically and if someone evil is behind it then it will be they will be malware installed that's the difference between a Linux security and the Windows security in Windows we have every time you down the program set up is the check to set up is quite Linux just have to once at the repo and when you know you can trust 3 you know that every time you install something from that backed much will make sure that the it is actually coming from that rapport itself so now we have refresh this and we are we have basically checked for updates to more powerful operation that we have done then part this is that for you what is probably corresponds to checking for updates so that would operate we want to actually install these updates and for this command is very simple is update all up no that on a boon to the 1st command for refreshing AREPO system black get date current for installing updates its adaptive upgrade whereas new openSUSE this is called update it's a different thing Reuters all updates it's
looking what is different I need the following packages get action up there but so there's chromium there's overture boxcars additions that and basically all I have to do is tied wide to install it or as it already sells well why is the default option adjusted enters it installs a so as you see things
or rather fast and is fully
automatic if you have two hundred updates and only last a few minutes you on wireless takes a little while not sure you harboring stole
something in thereby weight you can
also many you double tap he was dead tabulator on your on your keyboard from this will complete something with many options but if there is only 1 option left for example a few times it could only 1 command that makes sense it should be
super at that time and so when you tap set it will automatically already at the 1st set of tap completed where's the or that is missing for Europe for your command right so let's open up though when you tap which is
on this Council control Shift-Tab ordinal you maybe you have many different terminals this telomere operation this has nothing to lose the consul itself so for example I've used to those that this step it doesn't do anything so that means there are more options and up and if I press tab again you see that I have were logs name wrecked preference of refresh which are all programs that story that and it's like refined my command and you tap that again there's only 2 more options left put bench at test that at the 1st of it completes is a baroque that is all the complete feature under attack he will probably soon be 1 of the most used keys on your keyboard is something that that you can use or a lot so the updates have been installed and we are quite happy that this tells us that we can just go in and look at it again if you want to be sure that everything is fine now as we have no idea what this is about we just ignored not installed none of which is I tell a tool to before handles it very but the and that's installed tap-tap all various so the assault command actually exists I been that it didn't complete for space so that means there's something more if a double tap again I C I could have this is what I do know what it is don't have to know super has had 109 commands the powerful so which is what to install the spectra looking for is nominal so what's happening now it's looking if in my
sources there's a package called model and it tells me yes normal is there to be installed but the problem is known as translated so in English that's fine but many of you may be have German-speaking computer are you probably don't want non 0 to be in english right because your system is so along with contain all the translations that are necessary for sister and this is a dependency of model so dependencies actually mean that in order to install this interest although that for example on Windows defenses would be dot net framework through this program it has the we 1st installed dot net right and this is depends now the package manager will take care of these and it's possible that it installs 200 of things in order to get your 1 big huge app working right so of course happy what tells me automatically selected means this is the stuff you didn't explicitly tell me to install but I want a solid as well I might that so so do this but none was installed a for fast that energy is non 0 any questions about the package manager yes yes is it bring a window is apt get but they're different in a sense of they take different commands this apt-get update could operate at could install and that it all to remove presence if command is just zipper removed other images like this right talking any other questions a chair and this microphone is far from questions but by the time I get it up to you probably Christians already always so just no let's go to none of none of these attacks there was talk about before now I can type that but it
finds its because we have installed at this time so none was very user-friendly there many text editors in the consul and know is kind of the easiest to store prevent think some people might disagree I'm not allowed to say that this is religion but you know so it has a here the control symbol a then some shortcuts motor to get help you press Ctrl-T to exit control X not Q this time because in a text editor when you press Q you wanted to type a queuing up to exit of course from 3 to 5 is there is a very nice search function cupped uncut which shows brings the line that you have come back into and just about everything you need and a style more commands you don't you probably not very interested in so but again you know is the title of a loss centers that it on the meat on know the Seyfert it who
knows how we can say something and not all everybody so rude Subhash and yes sir thank you keyboard the hearing knows it studing of the 2nd suffers control and he does mean what do what I want for a filename I don't have I don't have a finding Sony to name this thing let's call it laughter you can say don't t ext key but the Linux is not important what you add to G and usually they are a Linux tells from a different way to this call match some how how far the recognize so the extension is not that important and it says vote freelance that's it they're just successfully
saved a document for 1st the consul hottest that fear OK well anyway went so sometimes it will tell you permission not and that is because you tried to write a file in to a place where cannot be written to or to place they don't have a right to write to so think twice if you really want to write to that place and if yes you can instead of tapping the nominal because that the pseudonana again but as a said watch out a pseudo there there several rules is suitable for example you cannot use sudo why you're drunk or do not use to the why you're tired or stuff like that yeah everybody does everybody messes up the system so but the rules would be actually a good good that so with almost no we can expect codex let's thank you that's it actually
nominal thus not prompt anything onto the consul when it exits space Bakrie work on which is sometimes nice sometimes less nice you want to see what you've just written you'll you'll figure that out so OK can I can navigate in my file system and we are talking now about our previous our kind of section that Mrs. the of page for and when you that's that's really going to do now we have to navigating enough fastest right because if written 2 5 somewhere somehow that I show you where where we put it so we are at page 15 file and folder operations in it in the Council so the 1st thing you have to know S. P. W. D this is not mean pass-first 1st this is something that you might be confused with pw the means where am I notably home Songo now how could have told that I am in this folder anybody knows yes yes from anything like this in detail the symbol obviously this means I'm home and my home folder is homes on drugs there is no such thing as documents and settings and the next is just the slash slash year using it and beauty tells us where the 2nd thing is L S Ls stands for list handle adults as it shows me everything there is so if we have a
financial it'll tell me my I can't make directory content hello this is exactly what adults ordered cholera things nicely on this system blue at the folder and why tweets document and therefore love letter here
now how can we tell that our love that will be put here well actually when have normal it just works in the current directory and in the calls you always at some specific place you can change this for example and what not to go to document to comment that this change directories CD is a commanded you have to do now of course have to start the works and it's got it right at the start if the capital B if you do D. tap-tap it will not to you anything because there is no such thing as sort of the source of capital T. I go tab tab to tell me all there in bold you can only tighten nothing else it makes sense and I kept up again and I have 2 possibilities which are documents and downloads is all the complete feature I was talking about so impressive Kahane and now from here on you know is just 1 more way to go just a comment on and he knows that to other completing this for me an oppressed and and do things are gonna change the 1st thing as an oblong going to be my home directory in 1 2nd this to tell that is going to be gone so what we see now is that if infers till the slash documented now the Windows you have a backslash instead of a slash on Linux and Magovern slash it's pretty much the same thing that's the impunity where we the PWD elements that tells me I'm at home some though the command right we have just navigated down to this folder aggressors about this there's everything we gonna do now is gonna build on top of that this has to be crystal clear I think 1st let's go back up Of course CD is the command and the problem is stopped with the with whatever attack it can only go down right so I want to go back up and therefore we have we need a new symbol and the simplest not stopped not that need means whatever is 1 level higher this should be clear to you know what is that the till this coming back document is going to vanish and Linotype's PVD reality we again at the main fault the constraint thinks for example I can go up again I can do ls no I'm in home slash home this is the the highest slash is always root thus the highest point to go can elect the C. W backslash on Windows or slash act and there's no no higher thing than that and we are in a subfolder home if we look L. S. know what we have in the home is on 1 user and this machine at his name is Sandra so now I want to go directly to the documents from this point so what I can do this CD Sondral tab of course by the way I can the status CDE and Cabot and there's only 1 option so it will automatically asunder and documented and you can see that they don't even have to go through Sandra can directly goes down to the document of folder the same thing if want to go up to constrains the start-stop slash dot means on the parent of this subfolder on the parent of right again I am where I was before but isn't clear to everybody the we also have a single doctor now this may be confusing what happened and anybody tell me what happened that a change to the current directory we it you can store make this more briefly which which has been nothing nothing happened dot means I am staying where I am so when I say dot slash dot size . slash dot still stay where this seems absolutely senseless right now but sometimes you have to say that I want from here right here and nowhere else I want to go there so what have to build you will realize that that probably we have to deal with now s relative file past because it's always from where we all right no somewhere else and you can you can exaggerate that you can go to war as go down to room it would be nice if I saw something so this goes against a documents folder now I can't think at the last stop of and you will see that what ls gives me this this time not the content of the current directory of the content of day the Opera Director because I told it to look at whatever is up from us and also the the adult slash now we can grow from from whatever is on top of us we we have cylinder commando from whatever is on top of us they can go to something else for example is a and on the full bill so I did never visit the parent fold it is immediately jump up and down again now you may be a start to get a feel how powerful this kind of thing can be because you can jump from anywhere to anywhere if you just know the relative location from that that sometimes you don't want to use the relative location you want a location which is completely and it's a completely not stupid independent there you go it and from where we are right now and for that you need to start slash slash means from the root so the command of for example a pregnant tension factory to the root in that route home utterance and there does not matter where this is an absolute file path where's the a ball was all relative file OK an aggressive no questions now I'm a little scary because so few questions is usually about sign yeah who is still following everybody open nice OK thank you so you're you're so smart that you're scaring me as good so of course not no you can tell it as well to go Stuttgart slash tap-tap of of course love not what the heck just happened what is all this kind of stuff these are hidden files a Linux hidden files or proceeded with the dot whenever a file or folder it starts with adopt it'll be hidden away from you when you to have a less over the file manager respects out and it a not and we have a 2 in the 2nd hurricane of hurricanes so advances well on what what are these well there's a lot of thought configuration files in there for example the don't KDE for would forget would define the theme ICCF chose the blocker the all this conjugation stuff is in these dot files and there but you can name a file yourself starting if adopted will be hidden from here which is need when you don't want to need true to deal with it all so the press and do of course I can the back on to the loss letter not very interesting and we're going to as we go look at L. S. more precise and so far all we've done is ls itself which is here well or whether to do all right appropriate something for the course and I forgot about it and 2 there's a 5 in that which is called to so Oregon ls somewhere else so less time we said this a let's make accident path for that which will be what again can someone tell me the absolute path have to type instead of not start tapped from the problem is in the root there are more than one fold home note that and no action not comment because I'm already in the command I wanted to go to adopt stopped which is 1 higher which is just the sum 3 such a ways of using the last 1 is with no so-called arguments just stand alone the commander as the other 1 is with 1 argument which is actually what to look at which can be year an absolute or relative fly past now you can do much much more rigorous you can give it so-called objects no let's look at a live somehow pudding get help for others yes Man Ellis but do what you want to so there is there 2 kinds of pages I don't know which ones I want so much as weight and it brings me to the first one or a type a number
now you see that this man page is much more complete so go down there many many many pages that I have and this is that the small man page with home by the way get old
way up again now as is do not ignore entry starting with dots is a dash this would answer the questions that you might have had white and can we not see hidden entries and how can we display them of a river bashary no that is the so-called option options or would you give to a command in order to change its behavior well and this this kind of instead of saying properties I want this to be by default you just say for this kind of command that execute right now and not in the future I wanted to behave this way for example pretty much all this example
i'll let me go up the nerve more to show this
and this time it shows me all the hidden files as well for example but Mozilla holds my Firefox history now let's go let's see all the files in the sub fall the document you can sit at once everything government and as you see I have to put the option before the actual argument the argument is what do I want the option is how they wanted and as a scene . 3
things that are not actually for things it shows up to a
slew cropped 1 is not adopt this part of every folder . stopped which is part of every for well except for there's a Dutch directory on which is actually something will or long or well which is something an external program traded I suppose it was KDE or both in question others are to do fact that this kind of thing I don't want to know it even exists and this is why it without the dash into another via and
you want a break who want a break Our cameraman was red so we have to take a break now again at 18 15 and was the all right everybody ready again
this time I have a screen so could have that and well so we were talking about
our about commands using with them with arguments armed with options and the option that we use to was a single letter option with just a dash which displays all the things that you have including the hidden files and now we're gonna see s how you can use options in general so they're all at at us at this time we have 1 a single-letter option but there are also options which all the letter and their conventions for that now know that these are conventions that many Linux programs use them bought many don't so I always read the man page 1st to be sure that no it will behave office as is as effective memory again saying that the H like this corresponds to that and that exact timing this means that we have a single letter option you proceeded with a single batch and then you just hang them all together right now as you have a multilateral options option yes to add 2 dashes meaning now this you don't have to interpret as a series of single characters but look at it as if it is really a word like this and if you want to specify more things you can add a equals and options separated with spaces and then at the end without anything preceding days the x origin the exact location so if we look at s again assume the
first one you see that instead of
typing dash I could although of time Best of all which is exactly corresponds let's
try this out you see those are perfectly couldn't
I they are because of and which specifies so another
thing s that you can combine both so let's say we want to call a automatically put with call you can set that you can say for example that you don't want your call your directories to be college the never flag actually there is a way to search the mandated this piping the slash symbol on your keyboard I got and I see on the don't seem to know you see on
a touch slash on the bottom left there's a slash appearing them it's no you can type searching where was interested in his column so you see that our polarizes cholera I just go slash enters slash entered that will bring me bound to this and this explains me what what color is useful and it's it's of course of explaining
as this is the explanation caller Eagles never or call eagles although it's probably the kind of switches that are interesting for you so if I say it
does not authorize it if I go like this a DOS
colorized directories obtained marking go exists or I can
go exact meaning that the order
of options in this case is not important but the man which might specify that the order of options is important I have just read your way through the man page that will tell you exactly how it how it accepts comments
so as a C. Ellis tells you that 1st once options and these brackets mean that options are optional you don't have to type them and then after birds you know you can specify a file and this is optional as well and you memory refused ls without any ventures stash any or as the file or L stash unified so we can use all these combinations I is very simple because this is a convention that old man pages or almost
all managers will follow is that if this is written that means it's optional you can do it whatever you want right so that's I think that's a big enough for
a for a general Linux commands as they only conventions OK so the next thing I'm going to show you probably of what would be interesting on let's see we can do athletic this a pedophile aloft lecture if you remember for those who have not been there before I have written a very very long offered her in the 1st hour or not so if we go to recede
the remember tells you list what is in a folder CD go to stage no bonus at X is right here so so let's look at love letters we did non in order to open up an editor but we don't want to fight something which is not to look at now you can go more unless the multiple cat the go less 1st came less years all the same commands as the man page I think but if the difference that it does not display and instead so it will actually display whatever you give it as an argument which in this case love letter and you see that
this and this is a familiar just what you get at the end of a man page you can also go slash you can say this and we'll call Eritrea thank you so as to this
again so with that that also works if we've less so a law of that the slash serial them and how that Madame for me OK this is like a man is using less for displaying man pages so less is the command that you can use for simply looking at things and searching through them how to quite well the same way as you could amend page with Q and you up but there's also more don't like less you might like more what more does instead of opening up like a window kind of thing and displaying whatever is it in this window it just print everything is written in it at exit immediately you see the difference who does not events is is OK so that you do not have differences we have so right a cat laugh it Princess more because cats will shorten modifies too long so let's make a long file durum how you can make a really long file and yes you do zone I'm gonna show you what this means in just a 2nd that's that's put in documents is can I can is tied taps in the middle of a command will automatically completed for me so 1 2 3 stop there was way too long this analysis there there is at l switch which will show you their sizes and you see that it's a rather large file there's also the H which means human readable and I'm not explain this because certain descriptors really and and you see that within this very short time if created 100 and 64 megabytes of hello there so that's up it reflects sorry awarded let's look at the long file with less as a considers scroll through that the kind of few line so let's maybe stop and I can more at 31 2 more OK through what is doing here it should the 1st port not press Enter that actually is crawling down you just don't see it because of course the same thing and I'm hitting Enter and enter all the time so the consul gets refreshed very 10 times a 2nd and reserve 0 per cent is is how long the finest that's created there but you have to know when you press Enter data just keep going where grief Q. and it would get out there so that is that yes it's printing the entire file a full what I do and was the deaf it doesn't begin stop quite immediately is still had to do some buffering because of so much in it that computer was livid load so I think you you how far you have seen how to see files and the next unless kind again maybe you're going to be a more can a person or a cat can a person I like cats too so don't don't for disliking cats that is so everything you need to know about this now that's as to some really more interesting things that's copy files move 5 let's delete fast is that a very 1st command rate can do some serious damage to your system so look forward to that when I want to do as I wanted but the long file into a different location because right now way this is a documents folder but I want a long file and this long file as well in my music for so what C P for copy as a CPU long file where do I put it 12 1 directory of evolved and then in the music and as you see it there's a slash behind music if I don't put the slash will mean copy it into music so if you're copying a folder it will right would try to override the music folder we fought to half behaviors of that of a different sometimes depending on whatever kind of cop kind it will not put whatever is on the soles which would in this case be long filed let's assume it's a for them it put the contents of this in their however if you put a slash book put this whatever this this into their but the difference but I got is tree that anyway this is for copying a now I it has copied the entire long fight to music and know that this is an SSD this is why it is so fast hard disk might take that long and so that's the next make a new folder make directory but I would say all all the time and this is not correct it is called the directory under Linux basically it's the same thing as a folder but technically not exactly so the that's a folder I mean directory so what I want to make a new did but I want to call it my favorite folder and if I go last night and see that there's a new fault of my free they can see the Internet as it is the only folder that we have a tab will automatically all the complete I can go back out of or can make a new file but there's a new command you can learn going fast it's all written there so you can forget if you want of touch with a touch something now all touched does is it you know every fi a timestamp it tells you well this file was last modified on that on that so go or blog write something as safe and I go well as l you can see that Sondral modified this document last at 18 27 well which is nice because of a touch it now it will not a difference to cancer still 18 and 27 so sort let me explain 1st touch will always only update this time stamp to the current time it's like you edit the file but you're not actually changing it again so when I don't touch Blum the origin of course is defined itself and now I know it's 28 up as they go as elegant again you see that the file has been modified on 18 28 by the way this is on a millisecond precise it's just that l is is not showing it note the cool thing about touch is that you can also touch in existing documents and what has happened is that has created a new MT document called law that way you can have a command history by tapping up on your consul that way you can scroll 3 last comment or down to go down again and you will see that this file some fun has exactly 0 bytes to all right this is what touches used for basically year for cycling something if you want to force an update you can but a new times that bonnet or creating new files so what I wanna do now is a gun are growing up and I want to put my favorite folder into I mean what was it into my music for them know what's going to happen now s it tells me
omitting directory my 54 but this is because see keep if you look at a man page will not copy directories on lesser specifically tell it to do so that's very nice because you get a typo and you copy a directory instead of a file and it's a big territory like you root directory then you're in serious trouble so would have to do is give it an option such that's all or and this time it will copy it so what's happening now as you see I put my favorite folder don't into music as see into because there's a slash and vector and I can have a look at at us you though the music industry that my favorite folder isn't but there is a different thing that I can do I can say I want whatever is in my favorite fold up everything with a store stores here means and whatever is in there I want to put it into the music folders I think this you can see that the long file the blind the sun phi which contained in this current folded have been copied through the music folder and not actually this folder itself but its contents no sometimes writing verse is equivalent to writing that this the same thing as we have done a ball off with the difference that the final slash is missing I'd in all of its for CPI I think it doesn't apply but if using another command like or sink this behavior of this command is equivalent to behavior of that command meaning that whatever is this folder will be input to that folder which means the contents of the vault in this case so be careful of where you put your slashes and always follow the man page on the sign cleared right let's move something known as at this to do file and actually wanted in images because to do is good for images like so and the air's the to do put each drool to the images folder and it's gone so if I go to these images folding this and what is interesting about this as that the for copying for for moving actually folders directories it will not need the or switch so I can say I want to put hello Margaret it the debtor thing I think they put into music my favorite folder I want to put this here and you see now with the dot fall right now I'm using the dots because that means here I want to move from some other the point to and there's no bash or necessary so as cp command will use a dash or do origin copy directories whereas the does not use their shot that is you know I've met folder in the in the current fold so am I going too fast for you yes OK do you want me to repeat what did you give it all exercise for repeating things the 1 with the storied in OK the story means everything that has that looks all like this of stores and was caught let's see if SAA iPad and in a new you fall 10 subfolders stopped so I want to copy everything that is in my favorite folder into the stop fold I can say for that's means it so as and the my favorite fallen stall store here means everything within that I can actually maybe maybe things it any more clear for you if I go the window status so that I do a new file and my favorite for them they're gonna call it text of TXT and then pull another 1 takes you on another 1 now but if you look at this we can see that my favorite folder contains these 5 files being balled me out excuse me some file text to it takes the text extinct so maybe I hope I hope this is gonna help you if I say I want to copy everything known or move every dot txt file in the subfolders while there is it in in my favorite folder into the subfolder what I can do now is say in my favorite for stored at t the store will be replaced by everything that matches so any file which says something that cheeks T will be moved into the subfolder is it clear what this command of you can say no is it way I believe what we are seeing the way a good question have seen it has copied has moved into a folder the with everything contained just again this is not clear what what that means that way it would have been clear but with this it's not clear this ambiguous it could also mean that copy all the move all the content but actually it is moved what defines what it exactly means but from a from a user's perspective this is kind of Amigas so I would never use this kind of syntax because it after get a feel for what it does yet yes no I don't I don't need and all so let's say I want to go I want to copy every file that is in contained in my favorite folder on I can say C. P. my favorite folder and everything for let's say that the extinct to here we're not copying folders actually fit contained folders as well it what's kicked the folders and just copy the files or actually stands for recursive recursive means in this case go deeper copy all the subfolders whereas if we omit and C. P. the or it will only copy the most shallow the highest files that will see but if there are any folders and will not copy them and this is what they're what this command that you can compare what it was before to what it is not things here for you as well now or any other questions this is probably the most confusing part of the course because there's so many new commands that if the work but we got everything we needed to built on top of that because it's always it's always the same thing does is just the base thinking on a new binary once you get that you can fast-forward a lot so I'm I'm scared for what I'm presenting you now the command starts of an orange stops and and its name is and this this move no removed sounds most harmless this extraordinary dangers remove means delete this from the system formant forget about this fight ever and you can type
this once it will take maybe a millisecond to execute and you could spend the rest of your life trying to recover that violent most probably after the fail we move is non-reversible removes will delete a file permanently OK be very very very sure about that so absolutely make sure that whatever comes now is what you really want so the I go that's well to that I want to do you need the delete Tate and the result is not based Deco now it's gone as we could expect from remove cracked now we can say this was gonna happen is gonna happen yeah now what's going to happen yes every tedious gone and everything is left is my favorite folder but also this was going to happen the sticky yes nothing but the direction large removal protect you from deleting directories unless you explicitly tell it to do so because if you delete a single file OK that's fine if it if you press a stall or maybe you have to really do a bad title for that as you will never use a store defined in but what's really thing about yes don't don't ever use a store in a fine and you can but if you do that you have a lot of trouble deleting that file later on because it will be in red why Khot yeah so of directories or easier to mess up things because they contain a lot of tension can contain a lot of important data so the or will mean the lead this directory and everything that is below it right I won't do it right now what I want Sure you as hot as safely delete a directory if you further we wanted so I go into the my folder and see that it contains 5 fouls still a going back up I say for dear this is the safe method to do the Devera tree as is seen it will refuse to do so as long as the extras not empty so I can go that's that's make new an empty directory and Kadeer the data is empty you go back up or dear and it's gone but we cannot do that under my favorite fold and you to delete every single file and this is why a status safe deleted the unsafe way to do it but then utterly more efficient way to do it this Scott would ever has been in there is all permanently lost the problem is that here you don't have as a user to visit the contones of this 1st but you could just delete something without looking at it dashed or you can also use dish or F for force is the most frequent way to mess up your assistant permanent the break system now you can do something there is even worse than just or or yeah you're laughing you gonna do it I promise you will do that this there's no at Linux adverse intensively is that it's over you who has not messed up something foreign this is the most frequent source of error chemistry my 2nd favorite with which I messed up my system to know 6 days ago now 4 days ago going to show you an unfair stay on mobile them on so watch out is again all there's a way you can say pseudo or or F slash slash Agnos roots cells lead to voter to the highest directory and everything that is contained which is everything no probably not is there no PROSURF rude off ensues so is there no preserve rude openSUSE you don't think so yeah that's too and the system for betterment so it's a virtual machine there's absolutely nothing of this I don't want to do is on your system don't do it again if this machine crashes I have a 2nd virtual machine and never at its verdict specially prepared for that kind of thing and it will tell you it's dangerous to operate recursively on slash use no preserve route to override so we have done at once just a fun I contrasty out of it but I don't have this on this machine and what is going to happen we done it once it takes about half a minute to complete an SSD like that and then just think starts slowly to crash like your background image goes away suddenly you're terminal goes way and then boom blank screen and you reboot and it will say nothing to brood because you have deleted successfully every single file on your hard disk including a broad purchase like if you have mounted some you speakies if you have blocked in some SD cards or even Rafael and methods devised if you're whole Nasasira connected to and mounted it will all be gone as well it's recursive it goes into directories you're you're laughing you're laughing anatomy lesson to someday when it can fix your things they don't come to me and as I have lost everything which they do they're gonna tell you nothing and you want to talk yeah you talk about it from so yeah have not I have not you district a system using that is and I can talk because of the guy was the mike rule number 2 if rule number 1 doesn't apply remember 1 applies anyway so you might have known I have showed you all this kind of thing on nominal is good Regular Expressions Regular expressions are very advanced you can say I want everything that has a from Z 2 from C. to catch and then becomes something with an arbitrary length and then with that after that there's a number as Syriac like this star which I told you is replacing any kind of character you can do very sophisticated things we have lost over a page on that this very advanced so from you know that story that I showed you it's started the is just a very very very basic use of regular expressions and I'm not going to be on 2 D though is that so soon doll Swindle is as I've told you something that gives to privileges to not be drunk to not be tired when you use the command 4 days ago I was using sudo being tired but never used by was drunk follow because it and have a here usually you don't need to resettle you need so only if you have to go out of your home directory like you do serious system changes the citrus so it can safely say or or or F of slash bin and it says the permission I'd I cannot do anything because I me as a nonprivileged user I don't have to write to modify things under been that if there were some files in this which were not protected and I just screwed up part of my system we gonna find out about that in the next minutes coming up as a set of a 2nd virtue box so don't do it in your system so you can a permanent by the way CD if you don't give an ardent it'll go back to unfold it's just that entire trick there are several ways to become root but openSUSE a contextual and last year passed you're come permanently route now we have changed
your user you can become you can go back to what you were before is controlled which is disconnect disconnect closes whatever terminal session you have open if you do it again controlled the it does the terminal because there's nothing more to show now there are 2 ways to our ways to do so door for example in a boon to system when you go through it will ask your your root password which was randomly generated and no 1 ever knows it but they soon doll which is do something as a privileged user so those who and what is the difference now should always 1st going to ask you your password not your administrative present at least on a to machines then about Zuse and then you will be privileged user for executing the next command NS commands being become the privileges a permanently and what's going to happen as well the same thing as just with you but with the difference that this time you're using your own passes yeah no SiteLock this would signaling to make I hope that this are as obvious as to her as everybody into everybody else in you know the pseudo dash I'm which is an option that we give to pseudo it means become superuser again about this time 1st of all change into your own home folder as you saw before it was to still remained a home Sandra which is not still there because I'm route at this point knowing the right now I am AD slash food which is the home folder of fruit who is the only user who is not in use in home his home a statute and there's only 1 group so this pseudo there so I will disconnect me after a certain time out if I do nothing here it will do this for me automatically be ones pseudo also Monotype's window with 2 pseudo at us right now it doesn't ask me for passage but if I wait for a moment to the will as before passage again or if a star of the close my consul open it back up do exactly the same thing as before it now it has to have has so was about time timeouts be aware about that when you've script and so those who wish not me that cannot who was not the tenets attention I is with tyrant it's written in your yes so now our that's about it for so that you can customize will be a fast food all these little there's a file which is the PC on this file I cannot even read from Odesta non-privileged users this is what it looks like and it has a few
defaults don't ever edit this file
us along with with non 0 no don't ever reducible non-elite ETC suitors if you do so and you make a typo your single will be broken and for examinable into to suit those the only way to become an administrator so you will not be able to become administrator anymore so this is why it's important to the nearest the users find a protected environment which is so would all these built and this command actually only safe if there nose and extracts and this is not normal anymore it's VI which is a different editor which I am unable to use all which is a shame Eckart could though this is hard you have to press Escape and then column and then Q and enters so these extreme advanced you can do a lot of things if you have time learn it I haven't had the time at its core so as you see the symbol after that the quit will tell us that the it the defies the unchanged and it has been found AT T M P file which is a copy of it you actually write a copy and then the copper with this index checked and put back this is how it went very acidic segment not only to save which is nice right well only 1 interesting thing that I like about pseudo except for setting it up in order to work for a the command you could do a lot of things their budget mandate from dataset Defaults insults which you can patch to the end of your comment on for
example this is my personal system I set
this up so when I type sudo at us the time it has a drunk it will actually start insulting me you can spend hours and that and this is fish as you see it's already a although on detecting things for me as a see this very on I that mean that is filtered some at the very end you
see Defaults insults this little thing will activate the insults if you wanna have fun you can you can do that this is a little this cookie that
you get in programs colonies stress if this is all I want to tell you for a pseudo the next thing as how the Start Programs you you know when you have and we have programs installed a computer they are usually under user been U.S. been so let's see what is in there there's a lot of things in there right because
stroll through that well this way you can see it
and as Goldrich for example we will find on the end of the program that we have installed which is normal well well it's a forward to go etc. so far away that my buffer is not long enough to to catch it there's a lot of programmed all the programs on your sister or very most of them will be found in user been some of them or just links or like a painter's CPP some of them or scripts and some of them are actual programs many of them are just links meaning that they point to some different program location so this is 1 thing that this probably confusing there's no such thing as all apps for of folder applications I think it's called a macaw or of Program Files folder on your Windows this doesn't exist on on on Linux system but the programs can be anywhere and then we just do this you tell your program but to look for what will you tell Linux to look for whatever the program name as had a specific place so monotype normal what is going to do it searching the web press tab this is this is how this how fast a goes it's the exits immediate it looks for several places in your system 1 of them being YouTube and so when I do not know offered to this is exactly equivalent no noise just a shortcut for user been non how do I know that actually I can say where it's so tell me that it is here is there I is there now this is probably the actual implementation of the program this might just be a link and that as man page user share man is the man pictured when it had men normal was going to do this is sort of said file go on the bus and displayed through less that's a looks like and this is where this is the phi where this is all coming from hopefully is starting to see how the Nexus working everything is linked together tied together in a in a weird way no let's look at this there's an under command then where in on what which is the Air Command and where I don't have a user ID which exactly you know this where it's tells us all the location where it's installed which will just tell you if you press nonyl where would you go and non- it's just a shortcut for use have been not alright then we gonna talk about starting programs in our local place so let's go to this could use a beam imagine that I am not sure that you can use a been or well attitude to get a copy not known and to kill the eye contact is as well the document amateurs that works I haven't tried it out so Kussman gonna be an engineer something so that's when I go and as you see that non-appearance of green has because none as executable what's a program and program Linux doesn't have a dot X don't at extension is just marked by the permission system which we'll look at in 2 days as being of special special kind permission executed so I said at nominal this will not be executed instead it's going to look at it all the falls to define the non of from user been and will execute there but I want this file to be executed from here that has anybody have an idea how I can execute this local executable files it is a tough 1 yes you know that makes sense so we can say . slash so from here stop me and he really need not slash as did just that none of a go together fold and it's working it looks the same because it's a it's a copy of the other non but this time we are wanting local model how can you tell if you remove it that thus you know this this is a bit of only applies type the command and nothing else before it or a non 0 is of course for the local no it will not to be none of from the system you see this is not working anymore however with such just have non of course it will still work actually the uninstall nominal and have my copy it will still work and why is that important for you maybe later on we will have local programs like Eclipse is something that you better install not on your system but a local home in your Home folder then you would you start slash distorted if you want or it you can do is you can create a link not use of been now sometimes getting fought against you 1 last thing which is how to link things and for links we gonna do l on the notion of find this useful in now not immediately there's not much to know about and and most of it is written in the in the man page would you need to know about then is that it takes you can take some options and it takes the target and the link name now these are not optional you have to type ln something something at least from the target is you all know what a link is fact who would have to know a link as OK or cut the ln k thing on and Windows so target is what we where where do we want to get this link from what does it points to and and link named s what is it supposed to be called so let's say that's assume in my favorite Nobel what would we have in their actually we have some fire so I want to create a link in this folder which is the document for down to some fat when I do and but as you saw pocket which is my favorite folder some file and then the link name and is doing and and you see that I have a link to some final than editors
you say hello I go into my physics
folder I a good look at the files some files and a good be the same thing this is because it is the same file this is what is called a hot link actually on your file system around the formatting this is all the formatting is all the pointers to a specific location at the discord actually data recites you have a lot of time 2 days are going to show you that so we have to file descriptors of well to to file names for the same 5 1 5 being here and cold linked to some fun and the other 1 being in my favorite folder aren't and then some fat and they are actually the same data on the desk and if I go and S. L you can of well a on my computer but it will now show me the links so that's that's interesting but the last 1 of the 1st Eigen insurgency say link follow symbolic links it's a it's a capital L I think it might be it might do that so let's try L. L now does not I don't have the time to to specify that sorry no of course not because it's a HotLink hard is what I show it would told is to fuzz going to the same physical location will you can do as well is a soft link because if Allen going back to the to what we had before which is sad ln I go with dash S. and Bash S. means to a symbolic link now this time it is not going to link to the actual data but it's going to link to the other and pointed to that we have to this file usually you will need ln with ass because it's the symbolic kind of thing is what you need for folders since they don't exist on the exodus this that just exist in the formant if you study computer science this makes sense for you if you don't just use L and always if a dash acid you'll be happy about it so this time it's called a link and you see that Cimlinc shows up in a different colored and link to some file which you do under of Windows is always the same link so this is what you use so that's why I recommend you if you don't know what you're doing just you ln of dash s and if I go ls l love this time it shows up as expected tells me Cimlinc is actually just a symbolic link to some fire on this concludes our do today's
lecture see again in 2 days if you want to go stored exactly from where we stopped it says advance but it's just whatever comes from now on the buyer of the day rule
and and theft
Rückkopplung
Punkt
Rechter Winkel
Physikalischer Effekt
Güte der Anpassung
t-Test
Dialekt
Ganze Funktion
Homepage
Rückkopplung
Expertensystem
Web Site
Quader
t-Test
Bitrate
Kombinatorische Gruppentheorie
Physikalische Theorie
Arithmetisches Mittel
Virtuelle Maschine
Menge
Rechter Winkel
SOLOMON <Programm>
Äußere Algebra eines Moduls
Wort <Informatik>
Bildgebendes Verfahren
Touchscreen
Rückkopplung
Punkt
Nabel <Mathematik>
Programm
t-Test
Systemzusammenbruch
Virtuelle Maschine
Digitalsignal
Fahne <Mathematik>
Vorzeichen <Mathematik>
Datentyp
Bildschirmfenster
Nichtunterscheidbarkeit
Radikal <Mathematik>
Skript <Programm>
Indexberechnung
Schnittstelle
Schnelltaste
Synchronisierung
Symboltabelle
Physikalisches System
Ein-Ausgabe
Quick-Sort
Arithmetisches Mittel
Token-Ring
Verschlingung
Rechter Winkel
Mereologie
Gamecontroller
Benutzerführung
URL
Faltung <Mathematik>
Steuerwerk
Programmierumgebung
Fehlermeldung
Subtraktion
Bit
Computervirus
Nabel <Mathematik>
Browser
Interaktives Fernsehen
Eins
Virtuelle Maschine
Bildschirmmaske
Webforum
Datentyp
Bildschirmfenster
Radikal <Mathematik>
Softwareentwickler
Hilfesystem
Verschiebungsoperator
Schraubenlinie
Softwaretest
Schnelltaste
Zentrische Streckung
Güte der Anpassung
Symboltabelle
Marketinginformationssystem
Computervirus
Elektronische Publikation
Fokalpunkt
Datenverarbeitungssystem
Rechter Winkel
Ganze Zahl
Gamecontroller
Stapelverarbeitung
Fehlermeldung
Standardabweichung
Bit
Explosion <Stochastik>
Konfiguration <Informatik>
Kreisring
Zellularer Automat
Information
Extrempunkt
Homepage
Datensichtgerät
Lochstreifen
Datennetz
Bildschirmfenster
Statistische Analyse
Passwort
Hilfesystem
Metropolitan area network
Gammafunktion
Kette <Mathematik>
Matching <Graphentheorie>
Systemverwaltung
Ruhmasse
Physikalisches System
Computervirus
Maskierung <Informatik>
Konfiguration <Informatik>
Zeichenkette
Software
Funktion <Mathematik>
Rechter Winkel
Datenverarbeitungssystem
Elektronischer Fingerabdruck
Translation <Mathematik>
Normalvektor
Versionsverwaltung
Stereometrie
Sensitivitätsanalyse
Konfiguration <Informatik>
Punkt
Adressraum
Versionsverwaltung
Programm
Benutzeroberfläche
Information
Gesetz <Physik>
Homepage
Formale Semantik
Skript <Programm>
MIDI <Musikelektronik>
Figurierte Zahl
Einflussgröße
Verschiebungsoperator
Nominalskaliertes Merkmal
Metropolitan area network
Schnelltaste
Shape <Informatik>
Dokumentenserver
Abstraktionsebene
Web Site
Quellcode
Computervirus
Konfiguration <Informatik>
Texteditor
Software
Funktion <Mathematik>
Forcing
Ablöseblase
Translation <Mathematik>
Information
Computerunterstützte Übersetzung
Versionsverwaltung
Schlüsselverwaltung
Faserbündel
Standardabweichung
Explosion <Stochastik>
Subtraktion
Mathematisierung
Digital Rights Management
Zahlenbereich
Physikalische Theorie
Homepage
Datensichtgerät
Informationsmodellierung
Computerspiel
Software
Reelle Zahl
Datentyp
Zoom
Zeitrichtung
Passwort
Hilfesystem
Programm
Graph
Mailing-Liste
Physikalisches System
Elektronische Publikation
Quick-Sort
Office-Paket
Zeichenkette
Gamecontroller
Verkehrsinformation
Prozess <Physik>
Digital Rights Management
Versionsverwaltung
Programm
Programmverifikation
Content <Internet>
Patch <Software>
Dienst <Informatik>
Information
Datensichtgerät
Homepage
Repository <Informatik>
Open Source
Physikalisches System
Interaktives Fernsehen
Datentyp
Biprodukt
Caching
Schlüsselverwaltung
Graph
Installation <Informatik>
Systemverwaltung
Quellcode
Elektronische Publikation
Nabel <Mathematik>
Mustersprache
Dienst <Informatik>
Wurzel <Mathematik>
Tablet PC
Verzeichnisdienst
Versionsverwaltung
Subtraktion
Konfiguration <Informatik>
Dokumentenserver
Gruppenoperation
Programmverifikation
Programm
Content <Internet>
Dienst <Informatik>
Patch <Software>
Information
Repository <Informatik>
Open Source
Physikalisches System
Interaktives Fernsehen
Bildschirmfenster
Passwort
Biprodukt
Default
Caching
Nichtlinearer Operator
Addition
Schlüsselverwaltung
Dokumentenserver
Installation <Informatik>
Computersicherheit
Applet
Strömungsrichtung
Physikalisches System
Quellcode
Nabel <Mathematik>
Konfiguration <Informatik>
Mustersprache
Wurzel <Mathematik>
Mereologie
Anpassung <Mathematik>
Zeitzone
Versionsverwaltung
Repository <Informatik>
Kernel <Informatik>
Gewicht <Mathematik>
Konfiguration <Informatik>
Dokumentenserver
Programm
Patch <Software>
Dienst <Informatik>
Login
Intel
Physikalisches System
Spezialrechner
Modul <Datentyp>
Skalenniveau
Virtuelle Realität
Radikal <Mathematik>
Pay-TV
Booten
Gruppoid
Biprodukt
Passwort
Strom <Mathematik>
Programm
Caching
Softwaretest
Nichtlinearer Operator
Schnelltaste
Elektronische Publikation
Vervollständigung <Mathematik>
Installation <Informatik>
Speicher <Informatik>
Bildauflösung
Applet
Konfiguration <Informatik>
Rechter Winkel
Wurzel <Mathematik>
Generizität
Parametersystem
Elektronischer Fingerabdruck
Gamecontroller
Schlüsselverwaltung
Zeitzone
Versionsverwaltung
Tabelle <Informatik>
Kernel <Informatik>
Einfügungsdämpfung
Konfiguration <Informatik>
Dokumentenserver
Digital Rights Management
Programm
Homepage
Spezialrechner
Pufferspeicher
Informationsmodellierung
Modul <Datentyp>
Bildschirmfenster
Datentyp
Translation <Mathematik>
Booten
Bildgebendes Verfahren
Gerade
Programm
App <Programm>
Lineares Funktional
Schnelltaste
Elektronische Publikation
Installation <Informatik>
Bildauflösung
Symboltabelle
Physikalisches System
Quellcode
Gerade
Arithmetisches Mittel
Energiedichte
Texteditor
System F
Rechter Winkel
Datenverarbeitungssystem
Generizität
Microsoft dot net
Elektronischer Fingerabdruck
Gamecontroller
Hilfesystem
Ordnung <Mathematik>
Schnelltaste
Spitze <Mathematik>
Abstimmung <Frequenz>
Elektronische Publikation
Matching <Graphentheorie>
Güte der Anpassung
Ext-Funktor
Systemaufruf
Schlussregel
Physikalisches System
Elektronische Publikation
Dateiformat
Datensicherung
Gerade
Pufferspeicher
Erwartungswert
Rechter Winkel
Anwendungssoftware
Lesen <Datenverarbeitung>
Gamecontroller
Hilfesystem
Maßerweiterung
Schlüsselverwaltung
Programm
Nichtlinearer Operator
Elektronische Publikation
Installation <Informatik>
Bildauflösung
Mailing-Liste
Symboltabelle
Elektronische Publikation
Raum-Zeit
Homepage
Arithmetisches Mittel
System F
Twitter <Softwareplattform>
Menge
Dateiverwaltung
Garbentheorie
Booten
Inhalt <Mathematik>
Verzeichnisdienst
Figurierte Zahl
Stellenring
Einfügungsdämpfung
Konfiguration <Informatik>
Punkt
Gewichtete Summe
Inferenz <Künstliche Intelligenz>
Dokumentenserver
Element <Mathematik>
Information
Template
Eins
Übergang
Homepage
Schiefe
Maßstab
Vorzeichen <Mathematik>
Typentheorie
Bildschirmfenster
Wurzel <Mathematik>
Quick-Sort
Metropolitan area network
Caching
Parametersystem
Installation <Informatik>
Gebäude <Mathematik>
Systemaufruf
Web Site
Programmierumgebung
Quellcode
Dateiformat
Variable
Konfiguration <Informatik>
Arithmetisches Mittel
Inhalt <Mathematik>
Funktion <Mathematik>
Gruppenkeim
Betrag <Mathematik>
Einheit <Mathematik>
Wurzel <Mathematik>
Rechter Winkel
ATM
Translation <Mathematik>
URL
p-Block
Versionsverwaltung
Verzeichnisdienst
Kreiszylinder
Nebenbedingung
Dualitätstheorie
Explosion <Stochastik>
Decodierung
Gewicht <Mathematik>
Hecke-Operator
Mathematisierung
Digital Rights Management
Gruppenoperation
Zahlenbereich
Datensicherung
Homepage
Datensichtgerät
Hypermedia
Virtuelle Maschine
Mailing-Liste
Verzeichnisdienst
Datentyp
Vererbungshierarchie
Inhalt <Mathematik>
Booten
Strom <Mathematik>
Konfigurationsraum
Hilfesystem
Programm
Fehlermeldung
Elektronische Publikation
Default
Relativitätstheorie
Thumbnail
p-V-Diagramm
Bildauflösung
Routing
Symboltabelle
Elektronische Publikation
Hochdruck
Maskierung <Informatik>
Quick-Sort
Videokonferenz
Benutzerprofil
Objekt <Kategorie>
Parametersystem
Faktor <Algebra>
Innerer Automorphismus
Stellenring
Konfiguration <Informatik>
Information
Datensicherung
Template
Datensichtgerät
Homepage
Demoszene <Programmierung>
Metropolitan area network
Hypermedia
Schiefe
Mailing-Liste
Verzeichnisdienst
Maßstab
Booten
Strom <Mathematik>
Quick-Sort
Default
Caching
Parametersystem
Fehlermeldung
Elektronische Publikation
Kategorie <Mathematik>
Default
Thumbnail
Elektronische Publikation
Hochdruck
Dateiformat
Maskierung <Informatik>
Konfiguration <Informatik>
Videokonferenz
Benutzerprofil
Skalarprodukt
Inhalt <Mathematik>
Wurzel <Mathematik>
Einheit <Mathematik>
Ordnung <Mathematik>
p-Block
Hyperbelverfahren
Programm
Raum-Zeit
Template
Datensichtgerät
Homepage
Hypermedia
Metropolitan area network
Verzeichnisdienst
Kontrollstruktur
Booten
Touchscreen
Parametersystem
Multifunktion
Fehlermeldung
Reihe
Einfache Genauigkeit
Elektronische Publikation
Konfiguration <Informatik>
Office-Paket
Benutzerprofil
Videokonferenz
Wurzel <Mathematik>
Festspeicher
Mereologie
Wort <Informatik>
URL
Stapelverarbeitung
Verzeichnisdienst
Stellenring
Konfiguration <Informatik>
Information
Template
Metropolitan area network
Maßstab
Standardabweichung
Fahne <Mathematik>
Typentheorie
Quick-Sort
Schnelltaste
Systemaufruf
Programmierumgebung
Dateiformat
Variable
Vertikale
Software
Inhalt <Mathematik>
Polarisation
Funktion <Mathematik>
Wurzel <Mathematik>
Einheit <Mathematik>
ATM
Translation <Mathematik>
p-Block
Verzeichnisdienst
Versionsverwaltung
Maschinenschreiben
Decodierung
Datensicherung
Datensichtgerät
Homepage
Hypermedia
Mailing-Liste
Verzeichnisdienst
Datentyp
Booten
Strom <Mathematik>
Fehlermeldung
Elektronische Publikation
Default
p-V-Diagramm
Symboltabelle
Hochdruck
Maskierung <Informatik>
Benutzerprofil
Videokonferenz
Parametersystem
Kantenfärbung
Explosion <Stochastik>
Konfiguration <Informatik>
Decodierung
Schaltnetz
Information
Datensicherung
Template
Datensichtgerät
Homepage
Zustandsdichte
Metropolitan area network
Mailing-Liste
Poisson-Klammer
Verzeichnisdienst
Ganze Zahl
Maßstab
Standardabweichung
Typentheorie
Datentyp
Quick-Sort
Strom <Mathematik>
Metropolitan area network
Programm
Fehlermeldung
Elektronische Publikation
Default
Systemaufruf
Web Site
Programmierumgebung
Elektronische Publikation
Dateiformat
Maskierung <Informatik>
Variable
Konfiguration <Informatik>
Videokonferenz
Benutzerprofil
Arithmetisches Mittel
Inhalt <Mathematik>
Software
Funktion <Mathematik>
Einheit <Mathematik>
Festspeicher
Parametersystem
Translation <Mathematik>
p-Block
Ordnung <Mathematik>
Verzeichnisdienst
Versionsverwaltung
Subtraktion
Konfiguration <Informatik>
Datensichtgerät
Digital Rights Management
Information
Datensicherung
Template
Datensichtgerät
Homepage
Metropolitan area network
Mailing-Liste
Verzeichnisdienst
Maßstab
Strom <Mathematik>
Quick-Sort
Parametersystem
Fehlermeldung
Elektronische Publikation
Default
Dateiformat
Maskierung <Informatik>
Videokonferenz
Benutzerprofil
Texteditor
Inhalt <Mathematik>
Einheit <Mathematik>
p-Block
Ordnung <Mathematik>
Computerunterstützte Übersetzung
Maschinenschreiben
Stellenring
Subtraktion
Zentraleinheit
Gesetz <Physik>
Template
Datensichtgerät
Internetworking
Homepage
Netzwerktopologie
Schiefe
Festplattenlaufwerk
Gruppe <Mathematik>
Total <Mathematik>
Bildschirmfenster
Inhalt <Mathematik>
Zeitstempel
Gerade
Metropolitan area network
Analysis
Caching
Fehlermeldung
Elektronische Publikation
Schaltwerk
Konfigurationsraum
Thumbnail
Systemaufruf
Strömungsrichtung
Physikalisches System
Computervirus
Bitrate
Elektronische Publikation
Zeitzone
Gerade
Quick-Sort
Ereignishorizont
Benutzerprofil
Videokonferenz
System F
Datenverarbeitungssystem
Last
Lesen <Datenverarbeitung>
Serielle Schnittstelle
URL
Computerunterstützte Übersetzung
Verzeichnisdienst
Resultante
Abstimmung <Frequenz>
Punkt
Richtung
Netzwerktopologie
Festplattenlaufwerk
Vorzeichen <Mathematik>
Gruppe <Mathematik>
Total <Mathematik>
Bildschirmfenster
Radikal <Mathematik>
Kontrollstruktur
Notepad-Computer
Wurzel <Mathematik>
Nominalskaliertes Merkmal
Dicke
Güte der Anpassung
Quellcode
Ein-Ausgabe
Konfiguration <Informatik>
Arithmetisches Mittel
Forcing
Menge
Wurzel <Mathematik>
Verzeichnisdienst
Fehlermeldung
Subtraktion
Quader
Zahlenbereich
Zellularer Automat
Systemzusammenbruch
Virtuelle Maschine
Verzeichnisdienst
Lesezeichen <Internet>
Computerspiel
Perspektive
Binärdaten
Datentyp
Passwort
Inhalt <Mathematik>
Speicher <Informatik>
Bildgebendes Verfahren
Hilfesystem
Touchscreen
Einfache Genauigkeit
Routing
Schlussregel
Vektorraum
Physikalisches System
Elektronische Publikation
Ausgleichsrechnung
Chipkarte
Regulärer Ausdruck
Skalarprodukt
Mereologie
Punkt
Momentenproblem
Gruppenkeim
Gesetz <Mathematik>
Eins
Digitalsignal
Gruppentheorie
Bildschirmfenster
Radikal <Mathematik>
Skript <Programm>
Wurzel <Mathematik>
Default
Datentyp
Prozess <Informatik>
Programmierumgebung
Kontextbezogenes System
Aliasing
Variable
Konfiguration <Informatik>
Funktion <Mathematik>
Gruppenkeim
Rechter Winkel
Wurzel <Mathematik>
Zahlenbereich
Login
Ein-Ausgabe
Lesen <Datenverarbeitung>
Messprozess
Message-Passing
Systemidentifikation
Server
Subtraktion
Mathematisierung
Abgeschlossene Menge
Kombinatorische Gruppentheorie
Homepage
Virtuelle Maschine
Physikalisches System
Message-Passing
Authentifikation
Datennetz
Adressraum
Passwort
Passwort
Modul
Programm
Fehlermeldung
Elektronische Publikation
Konfigurationsraum
Default
Cookie <Internet>
Mathematisierung
Routing
Physikalisches System
Elektronische Publikation
Gerade
Videokonferenz
Formale Sprache
Vererbungshierarchie
Systemverwaltung
Ausnahmebehandlung
Physikalisches System
Elektronische Publikation
Ordnungsreduktion
Videokonferenz
Texteditor
Patch <Software>
Automatische Indexierung
Maskierung <Informatik>
Speicherabzug
Passwort
Ordnung <Mathematik>
Programmierumgebung
Default
Zentraleinheit
Gammafunktion
Videokonferenz
Wurzel <Mathematik>
Datenverarbeitungssystem
Datentyp
Programm
Cookie <Internet>
Passwort
Normalspannung
Default
Subtraktion
Bit
Konfiguration <Informatik>
Gemeinsamer Speicher
Programm
Geräusch
Implementierung
Kartesische Koordinaten
Euler-Winkel
Extrempunkt
Homepage
Metropolitan area network
Puffer <Netzplantechnik>
Pufferspeicher
Informationsmodellierung
Verzeichnisdienst
Bildschirmfenster
Datentyp
Skript <Programm>
Strom <Mathematik>
Maßerweiterung
Metropolitan area network
Schnelltaste
App <Programm>
Elektronische Publikation
Vererbungshierarchie
Default
Stellenring
Physikalisches System
Binder <Informatik>
Elektronische Publikation
Gerade
Quick-Sort
Konfiguration <Informatik>
Matching
Texteditor
Bildschirmmaske
System F
Lemma <Logik>
Verschlingung
Parametersystem
Lesen <Datenverarbeitung>
Bus <Informatik>
Hilfesystem
Binäre Relation
Evolutionsstrategie
URL
YouTube
Dualitätstheorie
Konfiguration <Informatik>
Hash-Algorithmus
Wort <Informatik>
Atomarität <Informatik>
Physikalismus
Information
Datensicherung
Homepage
Metropolitan area network
Mailing-Liste
Lesezeichen <Internet>
Verzeichnisdienst
Total <Mathematik>
Bildschirmfenster
Dateiverwaltung
Strom <Mathematik>
Zeiger <Informatik>
Informatik
Cliquenweite
Gleitkommarechnung
Eindringerkennung
Zeichenvorrat
Elektronische Publikation
Default
p-V-Diagramm
Indexberechnung
Symboltabelle
Elektronische Publikation
Binder <Informatik>
Dateiformat
Nabel <Mathematik>
Maskierung <Informatik>
Gerade
Matching
Mustersprache
Inhalt <Mathematik>
Zustandsdichte
Datenverarbeitungssystem
Verschlingung
Lesen <Datenverarbeitung>
Dateiformat
Hilfesystem
Evolutionsstrategie
URL
Mini-Disc
p-Block
Videokonferenz
Open Source
Freeware
Multimedia
ICC-Gruppe
Schlussregel
Dienst <Informatik>

Metadaten

Formale Metadaten

Titel LinuxDays 2015: Practice 1
Serientitel LinuxDays 2015
Anzahl der Teile 05
Autor Kalbermatter, Sandro
Lizenz CC-Namensnennung - Weitergabe unter gleichen Bedingungen 4.0 International:
Sie dürfen das Werk bzw. den Inhalt zu jedem legalen Zweck nutzen, verändern und in unveränderter oder veränderter Form vervielfältigen, verbreiten und öffentlich zugänglich machen, sofern Sie den Namen des Autors/Rechteinhabers in der von ihm festgelegten Weise nennen und das Werk bzw. diesen Inhalt auch in veränderter Form nur unter den Bedingungen dieser Lizenz weitergeben.
DOI 10.5446/36887
Herausgeber Eidgenössische Technische Hochschule (ETH) Zürich
Erscheinungsjahr 2015
Sprache Englisch

Inhaltliche Metadaten

Fachgebiet Informatik
Abstract This talk is part of the LinuxDays of the student association TheAlternative, the digital arm of [project21]. In the digital age, we want to draw attention to a sustainable interaction with knowledge and culture. We want to encourage usage and comprehension of Free and Open Source Software (also known as FOSS) as an alternative to proprietary software, as well as promote similar open alternatives in other areas. Our LinuxDays are a series of events designed to introduce Linux to beginners and help those who already have it enhance their knowledge. They are created mainly for users of other operating systems who want to discover and/or eventually switch to Linux. We start all the way from the bottom and guide you on your way up to a safer and more comfortable digital lifestyle. In our courses, we cover philosophical aspects as well as technical content. Users already familiar to Linux can jump in at any time to learn more about the wonders of Linux and Free Software. During our Install Events, we will personally assist you in installing Linux on your laptop. Don't worry - of course you can keep your existing OS and additionally use Linux if you want to. After visiting our courses, you will not only have an easy-to-use and efficient operating system on your computer, but also know how to get the best out of it and find more information on your own in case you are enticed with Linux. You don't have to worry about the limits and costs of proprietary software anymore. All students of Zürich may attend our events for free. In consideration of international participants, all courses are held in English.

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