Would you like to inspect the original subtitles? These are the user uploaded subtitles that are being translated: 1 00:00:00,560 --> 00:00:04,630 Let's have a look at some useful tips and tricks and shortcuts when it comes to that. 2 00:00:05,060 --> 00:00:11,310 One of the most common most useful signals that you can send your terminal is the commands. 3 00:00:11,460 --> 00:00:17,790 Sometimes you'd be running a process or a program that you want to interrupt or you want to kill the 4 00:00:17,790 --> 00:00:23,910 wait to do that is by using the Control see or demonstrate that using the command on Windows if you 5 00:00:23,910 --> 00:00:26,400 remember when we did the command. 6 00:00:26,520 --> 00:00:33,880 It stops by itself issues for pink packets and then it automatically stops and then next if other big 7 00:00:33,900 --> 00:00:39,700 hackers like me that come there will continue engaging until I stop it myself. 8 00:00:39,760 --> 00:00:41,640 It wouldn't stop automatically. 9 00:00:41,640 --> 00:00:50,730 The way to do that is by the way Control C Control C is the command or the kill signal that I sent to 10 00:00:50,730 --> 00:00:55,950 my terminal to tell it to stop or kill a program that's running. 11 00:00:55,950 --> 00:01:02,730 Another option is to do the controlled Zeese fight on the command again and this time I don't want to 12 00:01:02,730 --> 00:01:03,560 kill the program. 13 00:01:03,570 --> 00:01:09,000 I just want to put it in the background because if you look at my terminal right now the pain is having 14 00:01:09,000 --> 00:01:10,860 my terminal I can't type anything. 15 00:01:10,860 --> 00:01:16,220 I can't continue work if I want my terminal back but I don't want to kill the command. 16 00:01:16,230 --> 00:01:20,380 I can put it in the background by doing control Z. 17 00:01:20,550 --> 00:01:23,480 I notice that now it says it stops. 18 00:01:23,500 --> 00:01:25,010 So it's been suspended. 19 00:01:25,150 --> 00:01:26,770 But it's not being killed. 20 00:01:27,190 --> 00:01:30,750 If you look at the left side there's a number here. 21 00:01:31,180 --> 00:01:36,680 This is the number of the program or the job that's been suspended and put in the background. 22 00:01:36,850 --> 00:01:40,530 And this is useful if I want to bring it back to the foreground. 23 00:01:40,930 --> 00:01:50,350 I can do f g or foreground and the number of the job that I put in the background that brings it back 24 00:01:50,350 --> 00:01:51,260 to the foreground. 25 00:01:51,370 --> 00:01:53,770 And it continues the process. 26 00:01:53,770 --> 00:02:01,020 Now if I want to kill that what I do control see you know I have a lot of awkward and mess on my screen. 27 00:02:01,020 --> 00:02:02,670 I want to clear it up. 28 00:02:02,760 --> 00:02:08,670 The way to do that is by ensuring that your commands and this clears up my screen if I want to exit 29 00:02:08,670 --> 00:02:09,860 my terminal. 30 00:02:10,140 --> 00:02:11,720 I do exit. 31 00:02:11,790 --> 00:02:14,800 I'm not going to do that now because I'm still working on it. 32 00:02:15,510 --> 00:02:17,570 Here are some other useful tips. 33 00:02:17,660 --> 00:02:22,300 The tab key is used for all to completion in Linux. 34 00:02:22,310 --> 00:02:28,070 What this means is that if I start typing commands instead of me typing the whole thing I can just hit 35 00:02:28,070 --> 00:02:31,490 the tab key and it will autocomplete that for me. 36 00:02:31,490 --> 00:02:36,830 Now the thing you need to be careful with is that sometimes there are multiple options to one command. 37 00:02:36,830 --> 00:02:45,800 So for example if I'm trying to do a traceroute and I start the tab key once nothing happens I'll have 38 00:02:45,800 --> 00:02:47,090 to type it twice. 39 00:02:47,090 --> 00:02:48,480 TAB TAB. 40 00:02:48,740 --> 00:02:49,880 I noticed what happens here. 41 00:02:50,030 --> 00:02:53,780 I get multiple options and they all start with Trace. 42 00:02:53,780 --> 00:02:58,850 This is why the next one able to autocomplete that for me because I didn't know which one I wanted to 43 00:02:58,850 --> 00:03:00,980 choose. 44 00:03:00,980 --> 00:03:07,260 So I'll have to do a little bit more completion myself up with it and try again. 45 00:03:07,280 --> 00:03:12,810 One of the completed recognizes that this is what I want. 46 00:03:12,890 --> 00:03:18,950 Now that that command is useful not only for executing commands but for browsing directories it saves 47 00:03:18,950 --> 00:03:19,850 me a lot of typing. 48 00:03:19,850 --> 00:03:27,500 So let's say for example I want to work on a file and unmap for the under my documents folder under 49 00:03:27,500 --> 00:03:28,890 my roof. 50 00:03:30,140 --> 00:03:32,030 And to do that I wanted to see the. 51 00:03:32,030 --> 00:03:33,690 Don't worry about what city means. 52 00:03:33,710 --> 00:03:35,320 We learned that in a moment. 53 00:03:35,890 --> 00:03:41,200 But instead of typing gurus I'll do our own tab instead of typing documents. 54 00:03:41,210 --> 00:03:48,710 I do the Aussie tab instead of writing and map I do and and tab. 55 00:03:48,710 --> 00:03:52,010 See how easy it is instead of typing all of that. 56 00:03:52,750 --> 00:03:56,680 I'm going to delete that for now because we don't need that. 57 00:03:56,680 --> 00:04:02,260 Here are some other tips for you to scroll up and down the screen instead of using the mouse. 58 00:04:02,270 --> 00:04:07,760 If I don't have the graphical user interface and I don't have the mouse option I can do shift page up 59 00:04:08,060 --> 00:04:17,100 and shift page down if I want to repeat previous commands instead of typing the whole thing again. 60 00:04:17,150 --> 00:04:21,750 I can use the arrow keys I can to go up or down. 61 00:04:21,800 --> 00:04:27,370 I can also look at my entire command history by issuing the history command. 62 00:04:27,980 --> 00:04:30,990 Let's say I want to search one command to see what do I do. 63 00:04:31,010 --> 00:04:35,210 I do control R and I type whatever I'm looking for. 64 00:04:35,210 --> 00:04:38,890 Let's say I'm looking for and map and am a. 65 00:04:38,910 --> 00:04:45,720 Notice how the output starts changing because it is trying to find the key word I'm looking for. 66 00:04:45,770 --> 00:04:46,280 And here we go. 67 00:04:46,280 --> 00:04:48,440 I found one with Unmap. 68 00:04:48,440 --> 00:04:51,180 That was one of the commands that I typed earlier on. 69 00:04:51,500 --> 00:04:55,420 And this by the way is a command that you slowly towards the end of the course. 70 00:04:55,430 --> 00:04:58,640 Now if I hit enter it will execute the command for me. 71 00:04:58,640 --> 00:05:03,100 It says No follow that entry because I'm working and this and that this is the way about the book. 72 00:05:03,110 --> 00:05:08,550 Let's do another one under control or let's say for example I'm looking for the command. 73 00:05:08,570 --> 00:05:14,810 Look at that B and it doesn't matter if once the command for me if I do enter it executes the command 74 00:05:15,020 --> 00:05:18,230 for me or the Control-C to kill it. 75 00:05:18,260 --> 00:05:21,640 Let's say for example I want to change the command to traceroute. 76 00:05:21,670 --> 00:05:29,320 So instead of going back one letter at a time I can do control a to move to the beginning of the cursor. 77 00:05:29,600 --> 00:05:33,020 And now I can change the command to traceroute. 78 00:05:33,530 --> 00:05:39,320 For example instead of dot com I want to change it to dot or I can move to the end of the search using 79 00:05:39,320 --> 00:05:40,440 control. 80 00:05:40,970 --> 00:05:47,470 Another option I can use to delete the whole thing which is the same as the Cox command is the control. 81 00:05:47,670 --> 00:05:54,080 OK now obviously for that to work I need to be at the beginning of the cursor which is control a and 82 00:05:54,080 --> 00:05:56,810 then the control K was cut. 83 00:05:56,830 --> 00:05:58,570 Or read the whole line. 84 00:05:58,760 --> 00:06:04,070 This is more useful when I'm dealing with text editing but it still could be used on the terminal if 85 00:06:04,070 --> 00:06:11,810 I want to base that back or use the Control wide wide stance for a Yank and if I want to clear my screen 86 00:06:12,050 --> 00:06:13,860 I do control. 87 00:06:14,930 --> 00:06:17,470 And that frees up my screen. 88 00:06:17,660 --> 00:06:19,510 Great Experiment with those for. 89 00:06:19,550 --> 00:06:20,960 Try them on yourself. 90 00:06:21,110 --> 00:06:23,690 And then we can move on to the next session. 9277