----BEGIN CLASS---- [13:28] #startclass [13:28] Roll Call [13:28] Robin Schubert [13:28] Abhishek Singh [13:28] Mohsin Mumtaz [13:28] Anu Kumari Gupta [13:28] Ranjeet kumar [13:28] Atul kumar [13:28] Shivam Singhal [13:28] Arush [13:28] Suraj Ghimire [13:28] Abhinav Shirur [13:28] Sakshi Saraswat [13:28] pooja kumari singh [13:28] Bhavin Gandhi [13:28] Ravindra Lakal [13:28] Ashwani Kumar Gupta [13:28] Harsh Shah [13:28] Deepika Upadhyay [13:28] Vipul Gupta [13:28] Akshay Gaikwad [13:28] Santosh Kumar Shaw [13:28] Saikat Dey [13:28] Kshitij [13:28] akash pathak [13:28] Priyanka Sharma [13:29] Pradhvan Bisht [13:29] Himanshu Awasthi [13:29] Amit Kokitkar [13:29] Abhishek Das [13:29] Kishore Saldanha [13:30] Gaurav Sitlani [13:30] Deepak Chethan [13:30] Razy Kased [13:31] Is roll call going on? [13:31] singh123: yes :) [13:31] yes [13:31] Amarjeet singh [13:32] no blooper :P [13:32] <_RicharD_> Mayank gupta [13:32] Any questions from all the sessions we had till date? [13:32] Onyinye Madubuko [13:33] sayan, no :) [13:33] Remember I will limit the time for Q/A [13:33] ^^ for today [13:33] ! [13:33] I have one general question. [13:33] singh123: you can ask [13:33] singh123: but use ! [13:34] next [13:34] Why home directory of root user is optional? [13:34] roll call: Devesh Verma [13:34] :o [13:34] Sayan, I have not good internet connection, so in between i got disconnectd. [13:34] maybe root lives underground [13:35] ashwanig: afaik it's not optional [13:35] hi sorry i am late , is it class started [13:35] Optional as in [13:35] ashwanig: I need to check but.. maybe I know wrong [13:35] yes pavan [13:35] kushal, It was mentioned in the FHS document. [13:35] Pavan, yes [13:35] ashwanig: Ok, I will check now [13:36] my i know todays topic ? [13:36] may be it will start without any home directory at / (which used to be the home directory of root [13:36] my suggestion: as far as I know, a home folder is always optional. root is not a user you should work with permanently, and home is for your personal files, so root should not need that. [13:36] Pavan, If you any questions from previous topics. Its time to ask now :) [13:37] im_mohsin : thanks [13:37] sayan, check section 3.14. Is it an optional reading? That's why it is written optional? [13:38] rollcoll: Messi Fc [13:38] Sorry I am facing network issues as I am travelling [13:38] sayan, FHS 3.0 [13:38] ! [13:38] ! [13:38] schubisu: yes, /home/ is optional [13:39] you can place it anywhere, and afaik you query from $HOME but it can be empty also [13:39] ! [13:39] as kushal told it starts from '/' [13:40] roll call: aniket uttam [13:40] roll call: Anuja Agarwal [13:40] ashwanig: let's see, this is something to learn :) [13:40] Sorry to disturb, but did I miss something? Like some link to read or something like that? I joined late [13:41] [13:41] messifc : ni [13:41] no* [13:41] sayan, Search online also, but didn't find anything useful [13:41] in old days of linux, / was home directory of root but now it has different folder [13:41] how do i get started i started today only ? [13:41] ashwanig: I will look into it, and tell you [13:41] next [13:42] ! [13:42] "chmod is the command which changes the file mode bits." What does file mode mean here? [13:42] roll call: sharon christa [13:42] They are discussing Filesystem Hierarchy Standard(FHS) [13:42] real last line of this http://www.tldp.org/LDP/Linux-Filesystem-Hierarchy/html/the-root-directory.html [13:43] ikshitij: https://en.wikipedia.org/wiki/Chmod#Symbolic_modes [13:43] CHOCOS, https://www.dgplug.org/irclogs/2017/ read it. [13:43] ikshitij, it means the mode in which user can a access a file like a read(r), write(w) or execute(x) [13:43] next [13:44] CHOCOS: wait for your turn to ask a question. If you have any question, type "!" and then wait for your turn [13:44] I was going through the logs and saw kushal mentioning that Fedora is preffered linux distro for these sessions. [13:44] I am a full time Ubuntu user. [13:44] Any particular reason for preffering fedora? [13:44] adas0496: no issues, you can go with Ubuntu [13:44] im_mohsin: Thank you ! :) [13:44] okay [13:45] adas0496: most of us are Fedora users, so it would be difficult to answer Ubuntu related questions [13:45] next [13:45] I've downloaded via and Discount, I should be using von to create a Markdown file than use Discount to convert to HTML? [13:45] Vim* [13:45] Kas: out of scope for class now, you need to ask after class [13:45] I understand. However linux related issues should be common accross distos. [13:46] next [13:46] Kas, yes. [13:46] Problem may arise with package installations. [13:46] I thought we had open questions now [13:46] Thanks [13:46] If someone is solving a doubt on chat, and if that person is going out of track (misunderstanding our question) , is it ok to interrupt? If yes, how? [13:46] adas0496: not really, if it's common we will try to help [13:46] abhinavshirur, Just ask at that moment. [13:46] abhinavshirur, say that you did not understand. [13:46] alright [13:46] ok :) [13:47] abhinavshirur: or like tell "let me rephrase the question for you" [13:47] next [13:47] No more questions for now. [13:48] So today I will be telling on I use vim, the practices I use [13:48] - how I use it for programming [13:49] - plugins I use [13:49] and how I use them [13:49] so before starting lets start with a example text file [13:50] sayan, or live terminal? [13:50] bhavin192: no, I will give out instructions and people will type [13:51] sayan, cool :) [13:51] the awaited session ;) :P [13:51] - so people copy this text and copy it to the file foobar.txt [13:51] https://paste.fedoraproject.org/paste/p3Vt-6cybg4s4DkgyvrrzA/raw [13:52] Done [13:52] done [13:52] Read clearly what I write, I will not entertain any typos that you do. [13:53] Tell me when done [13:53] Done [13:53] done [13:53] Done [13:53] done [13:53] done [13:53] <_RicharD_> Done [13:53] done [13:53] done [13:53] done [13:53] done [13:53] Done [13:53] done [13:53] done [13:54] done [13:54] done [13:54] done [13:54] done [13:54] done [13:54] done [13:54] done [13:54] done [13:54] done [13:54] done [13:54] done [13:54] done [13:54] done [13:54] I would suggest people to maintain a seperate notebook, to note down stuffs [13:55] done [13:55] done [13:55] sayan ok [13:55] done [13:55] okay [13:55] Moving forward [13:56] *- How I open the file? The syntax is vim [13:56] when the file opens; the file opens in command mode [13:56] you press 'i' to go into insert mode [13:57] you press 'Esc' to come back to command mode [13:57] Roll call : Prerna Pandey [13:57] Roll call: Niranjana deshpande [13:57] To write text, you go to the insert mode and then type text [13:58] *- Now, one trick that I use, mostly in shell scripts is to automatically open the file in insert mode [13:58] *- You do that by this command `vim +startinsert `. [13:59] *- So people try this: vim +startinsert foobar.txt [13:59] does that work? [13:59] ! [13:59] like a charm :-) [13:59] yes [13:59] yes [13:59] sayan, It works [13:59] yes [13:59] :yes [13:59] yes [13:59] yes [14:00] yes works [14:00] yes [14:00] yes [14:00] yes [14:00] Yes it works [14:00] ! [14:00] Yes, awesome! [14:00] cool [14:00] yes it works [14:00] yes [14:00] Yes [14:00] <_RicharD_> Yes works [14:00] yes [14:00] yes [14:00] Yeah :) [14:00] *- Now, next if you want to open the file with a certain file number you use the syntax [14:00] Yes [14:00] yes [14:01] *- vim + [14:01] *- so try `vim +35 foobar.txt` [14:01] *- Check if that works? [14:01] Yes! [14:01] works [14:01] yes [14:01] yes [14:01] yes [14:01] yes [14:01] There are is the word [14:01] yes [14:01] Yes [14:02] awesome :) [14:02] well, it has only 13 lines, but yes [14:02] yes [14:02] <_RicharD_> Yes [14:02] yes [14:02] Yes [14:02] how to exit from insert to come to command mode ? [14:02] esc [14:02] ! [14:02] championshutler: press Esc [14:02] championshuttler, esc [14:02] championshutler, press esc [14:03] it did not work in ubuntu 16.04 [14:03] ! [14:03] schubisu: thanks for noticing [14:03] schubisu: I will tell the steps to fix that [14:03] championshuttler, for me too.not working correctly [14:03] let me go ahead and take questions of people who already asked [14:03] next [14:04] next [14:04] why should we type +startinsert when pressing an i is seemingly easier job [14:04] im_mohsin then what to do to go for command mode? [14:04] codepoetn: as I told this could come useful in shell scripts, automating pressing of 'i' [14:04] next [14:04] championshutler: It should work. [14:04] why do we need +startinsert? i mean pressing just 'i' isn't simpler? [14:05] esc championshuttler [14:05] never mind [14:05] ! [14:05] avik_: I just answered that [14:05] next [14:05] yup [14:05] it is not going to correct line number, sayan [14:05] ! [14:05] actually kept the thing written. thanks [14:05] not working i have to close first terminal then i have to do same process again :( [14:06] im_mohsin: right! my mistake. as schubisu told [14:06] *- People please remove the file you have and use this instead [14:06] championshuttler, Have you pressed Ctrl + S? [14:06] *- https://paste.fedoraproject.org/paste/PHUFGAK8rP6gOh2CFohb4A/raw [14:06] sayan, realized now that the one line very big in the text right? [14:07] ashwanig no [14:07] all please save the last link I gave as foobar.txt and delete the last file [14:08] please tell me when done! [14:08] done [14:08] done [14:08] done [14:08] done [14:08] done [14:08] done [14:08] done [14:08] done [14:08] done [14:08] Done [14:08] done [14:08] Done [14:08] done [14:08] done [14:08] The new file maintains the 80 line character limit thus is divided over multiple lines [14:08] Done [14:08] cool [14:08] <_RicharD_> Done [14:09] Now it has 48 lines [14:09] done [14:09] santoshShaw: yes [14:09] done [14:09] New file link? [14:09] done [14:09] saikat_, https://paste.fedoraproject.org/paste/PHUFGAK8rP6gOh2CFohb4A/raw [14:09] done [14:09] thanks abhinavshirur [14:09] Moving ahead [14:09] done [14:09] done [14:10] done [14:10] done [14:10] done [14:11] done [14:11] *- Sometime is you want to open run a few commands, like ls, pwd etc you can do that directly from vim [14:11] *- Open up vim, and in command mode try: [14:11] *- :!ls [14:11] *- :!pwd [14:12] ! [14:12] *- :!cat foobar.txt [14:12] ! [14:12] sayan, Works [14:13] next [14:13] works [14:13] next [14:13] sayan, solved [14:13] ! [14:14] saikat_: cool [14:14] ! [14:14] next [14:14] sayan, solved and done [14:14] next [14:14] Can we run installed packages command like gcc, make, python, pip in vim? [14:15] ikshitij, try! [14:16] ikshitij: try, should work [14:16] next [14:16] ! [14:16] Can i execute a program in vim? let say i have c program i want to execute as i go. So can i use :!make [14:16] next [14:16] ! [14:16] same question [14:16] when running ":!cat foobar.txt" I get error ":catch without :try" [14:16] ! [14:16] im_mohsin: same question as? [14:17] im_mohsin: but it should work. [14:17] im_mohsin: try :) [14:17] python works in vim :!python [14:17] as ikshitij [14:17] messifc, you miss some thing [14:17] messifc: no clue [14:17] Cyber_freak, all commands should work [14:18] I have seen the limitation to this command yet [14:18] yes works [14:18] I usually use this without going on of vim [14:18] so \o/ [14:18] sayan: sorry my bad. Now it's working fine [14:18] Okay moving ahead [14:21] *- These are a few things that I use [14:21] *- moving ahead with configuration of vim [14:22] *- So you can create a file in your home directory as .vimrc [14:22] *- If you already have? ignore (you probably know about configs :-) [14:23] ! [14:23] ! [14:23] People please do this in a different terminal. Basically you need to have to open terminals. one to edit .vimrc [14:23] another for foobar.txt [14:24] next [14:24] next [14:24] sayan, as 'cat' command is taking whole text in command is there is any command to take only some lines from file? [14:24] asraisingh: head & tail [14:24] next [14:25] When I typed :!dnf then it shows a list of commands followed by 'shell returned 1'. What does this mean? [14:25] probably dnf returns 1? [14:25] next [14:26] Question already answered. [14:26] how to setup vimrc? [14:26] Should i type vim .vimrc? [14:26] saikat_: should work [14:26] saikat_: yes [14:27] btw, I told you to create the file .vimrc [14:27] question answered [14:27] ! [14:27] next [14:27] next [14:27] Moving ahead [14:27] *- Open the vimrc with vim [14:27] *- vim .vimrc [14:27] is their a way to recover edits to a quitted file? [14:28] sayan, doing that opens .vimrc in vim with nothing written. If i do :wq, it means i am also creating the file, right? [14:28] saikat_, yes, you are creating new file. [14:29] ! [14:29] ! [14:29] saikat_, first type ! then ask. [14:29] bhavin192, i was actually continuing my question [14:30] what is the file name? .vimrc seems the extension, however a file is opened in vim? HOW? [14:30] oops! [14:30] deepika: yes, there is something called *.swp files [14:30] saikat_, oh, ok then :) [14:30] deepika: but out of scope for this class now [14:30] deepika: you can asked after the session [14:30] next [14:30] okay ,will do ,thanks :) [14:31] sayan asked! [14:31]