1 00:00:00,870 --> 00:00:06,150 I'm adding this lecture after I recorded the rest of the lectures for this section of the course, just 2 00:00:06,150 --> 00:00:12,600 because it occurred to me that I keep editing files on the remote server using a tool called Vij, some 3 00:00:12,600 --> 00:00:13,500 people call it vem. 4 00:00:13,500 --> 00:00:14,460 I call it Vij. 5 00:00:14,910 --> 00:00:16,590 And you may not be that familiar with it. 6 00:00:16,590 --> 00:00:22,470 And I'm not sure that I gave enough instructions to actually enable you to use it usefully. 7 00:00:23,010 --> 00:00:26,730 So this is just a short lecture that gives you a crash course in VI. 8 00:00:27,240 --> 00:00:28,560 So I'm going to connect to the server. 9 00:00:29,820 --> 00:00:31,080 So I'm connecting. 10 00:00:32,770 --> 00:00:35,830 And I'll clear the screen and I'm in my home directory. 11 00:00:35,860 --> 00:00:36,350 OK? 12 00:00:36,730 --> 00:00:40,960 And I just saw that by typing TWD for print working directory. 13 00:00:41,350 --> 00:00:48,640 And if I want to say go up a level, I can dot dot to go up on level and last list the files and I'll 14 00:00:48,640 --> 00:00:50,320 go back into TC's. 15 00:00:50,380 --> 00:00:53,590 OK, so inside of that I have two files. 16 00:00:53,590 --> 00:00:56,050 I want to create a new file which I'm going to call test. 17 00:00:56,060 --> 00:01:03,880 I'll create that by typing the command VI and then test text because it's a text file and that opens 18 00:01:03,880 --> 00:01:10,780 the VI editor and the VI editor is incredibly powerful and I'm not going to go anywhere near through 19 00:01:10,780 --> 00:01:14,720 all of the commands that are available to you, but I'll give you enough that you'll be able to do things. 20 00:01:15,220 --> 00:01:21,550 So when this is first opened, if I want to be able to insert some text, I'll type the letter. 21 00:01:21,610 --> 00:01:24,460 I actually I think I hit to know there. 22 00:01:24,640 --> 00:01:29,020 But anyway, I and that you notice in the bottom right and the left hand corner, it now says you're 23 00:01:29,020 --> 00:01:34,750 an insert mode and I can, I can type things now I have a typo there. 24 00:01:34,780 --> 00:01:41,500 If I want to get rid of that and change that wi to an H like it should be, I have to hit escape. 25 00:01:41,710 --> 00:01:47,050 That gets me out of edit or the insert mode and then I'll use the arrow keys to get over top of that. 26 00:01:47,380 --> 00:01:55,870 I'll type the letter X to delete that X I to reinsert and I will change it to an H and now I can go 27 00:01:55,870 --> 00:01:56,770 back to the end of this. 28 00:01:57,070 --> 00:02:04,600 I can type things and now I can type more and again I'll get out of in certain mode by hitting the escape 29 00:02:04,600 --> 00:02:04,950 key. 30 00:02:06,160 --> 00:02:08,110 Now that I've done this, I want to save it. 31 00:02:08,260 --> 00:02:14,320 So I'm going to type a colon shift and then the shift semicolon, which is the colon key that brings 32 00:02:14,320 --> 00:02:15,370 up the command. 33 00:02:15,370 --> 00:02:19,510 And in the bottom left hand corner, you'll see it's now a colon and I'll type W four. 34 00:02:19,510 --> 00:02:19,930 Right. 35 00:02:20,380 --> 00:02:21,640 And that writes the file. 36 00:02:21,820 --> 00:02:25,150 And if I want to get out of here again, I'm not in insert mode. 37 00:02:25,150 --> 00:02:26,500 And if I am, I would hit escape. 38 00:02:26,830 --> 00:02:30,520 I'll hit the colon again to bring up the command and I'll take a cue. 39 00:02:31,210 --> 00:02:32,410 And now I'm quite out of it. 40 00:02:32,500 --> 00:02:38,920 And if I clear the screen and type ls to list the contents of this directory, there is my test text 41 00:02:38,920 --> 00:02:43,300 file and if I type cat to actually print this out, the contents of it. 42 00:02:43,580 --> 00:02:46,510 Test, test, text. 43 00:02:46,750 --> 00:02:48,100 There's the file that I typed. 44 00:02:48,640 --> 00:02:54,340 If I want to edit that file down Vij test text and it brings it back up. 45 00:02:54,850 --> 00:02:56,650 Now let's say I want to have a new line here. 46 00:02:56,650 --> 00:03:03,670 I could hit I and then press return or I can just type O which will insert a new line and put me in 47 00:03:03,670 --> 00:03:11,500 a certain mode and now I am in insert mode period hit escape to get out of it. 48 00:03:11,710 --> 00:03:18,820 Colden to bring up the command a bit wq I can do the right and quit as one command and we're good. 49 00:03:19,900 --> 00:03:20,920 Let's do it again. 50 00:03:21,550 --> 00:03:24,490 Let's say I want to get rid of this entire line. 51 00:03:24,520 --> 00:03:27,670 I can type D and that will delete the entire line. 52 00:03:27,670 --> 00:03:36,610 I can delete this line to D and get back and insert mode and type some new text. 53 00:03:37,390 --> 00:03:45,040 Now I'm going to get out of insert mode and I'm going to go y y to copy y y copies the current line 54 00:03:45,370 --> 00:03:48,850 and then P to paste and Peter paste and Peter paste and Peter paste. 55 00:03:49,180 --> 00:03:55,270 And I'm going to go up to this middle line and I'm going to delete the words sum by hitting X four times 56 00:03:55,270 --> 00:03:58,270 X X, X, X I again. 57 00:03:58,270 --> 00:04:00,310 And now I'm going to type a word that is unique. 58 00:04:00,310 --> 00:04:04,540 It exists nowhere else in this file and I will call this Treva. 59 00:04:05,140 --> 00:04:11,980 OK, I'll get out of insert mode, bring up my command by typing the colon and now I want to look for 60 00:04:11,980 --> 00:04:13,060 the word Treva. 61 00:04:13,300 --> 00:04:16,120 So I put a slash and Treva and it's case sensitive. 62 00:04:16,120 --> 00:04:19,630 So I had to use the capital T and it will say, hey, there's the line. 63 00:04:19,960 --> 00:04:22,060 It takes me right to the line that has that word. 64 00:04:22,270 --> 00:04:29,880 And if I hit N for next, it jumps right to the word Trevor and I could delete that and put in OK, 65 00:04:30,130 --> 00:04:31,060 I've got the wrong spot. 66 00:04:32,140 --> 00:04:38,170 Mary escape colon WQ to save and quit and we're done. 67 00:04:38,170 --> 00:04:40,660 And that is our crash course in VI. 68 00:04:41,020 --> 00:04:45,130 Now I've added to the resources for this page a cheat sheet for VI. 69 00:04:45,370 --> 00:04:47,380 And if you don't like VI, there are other editors. 70 00:04:47,380 --> 00:04:53,020 I think there's one called Pekoe, which I never used peacoat test text and that brings up something 71 00:04:53,020 --> 00:04:55,270 that actually might be more useful for you. 72 00:04:55,510 --> 00:04:57,760 So this might be a little friendlier for you. 73 00:04:57,760 --> 00:04:58,630 I don't like it. 74 00:04:58,630 --> 00:05:00,850 I find VI extremely easy to use. 75 00:05:00,850 --> 00:05:06,130 You have to learn basically three or four basic commands how to get into the insert mode with an eye. 76 00:05:06,340 --> 00:05:12,070 The escape gets you to your command of the insert mode and typing a colon brings you into the command 77 00:05:12,310 --> 00:05:13,810 bit where you can save and quit. 78 00:05:14,110 --> 00:05:16,480 And that's sufficient for our purposes, for this course. 79 00:05:16,480 --> 00:05:21,670 But if you want to learn how to use Nano, just Google it and all the instructions will be there. 80 00:05:21,760 --> 00:05:28,960 I want to exit right now and it looks like Control X gets me out control X and we're OK. 81 00:05:28,990 --> 00:05:29,680 So that does it. 82 00:05:30,070 --> 00:05:31,990 But it's is really easy to use in. 83 00:05:32,040 --> 00:05:33,500 I strongly encourage you to learn it. 84 00:05:33,510 --> 00:05:37,980 It will make your life much easier when you're managing configuration files on a server.