1 00:00:00,150 --> 00:00:02,100 As a system administrator, there'll be times 2 00:00:02,100 --> 00:00:06,300 where you'll be asked to manage software packages. 3 00:00:06,300 --> 00:00:07,821 Now software package refers to a collection 4 00:00:07,821 --> 00:00:11,430 of files that are needed for a program to run. 5 00:00:11,430 --> 00:00:13,123 In this demonstration we're going to walk through 6 00:00:13,123 --> 00:00:17,280 two package managers who help us manage that life cycle 7 00:00:17,280 --> 00:00:19,890 of installing, updating, removing, 8 00:00:19,890 --> 00:00:23,100 and just getting general information about those programs. 9 00:00:23,100 --> 00:00:26,250 The first package manager that we're going to use is RPM. 10 00:00:26,250 --> 00:00:30,120 Now that's for Red Hat Linux Distribution type of packages. 11 00:00:30,120 --> 00:00:32,130 We're going to use that because since OS 12 00:00:32,130 --> 00:00:35,250 is one of the Red Hat Linux Distributions. 13 00:00:35,250 --> 00:00:37,650 So we're going to install a Korn Shell package. 14 00:00:37,650 --> 00:00:40,950 So we're going to do sudo Red Hat package manager. 15 00:00:40,950 --> 00:00:43,440 We're going to install verbose mode 16 00:00:43,440 --> 00:00:44,700 so we can see more information about it. 17 00:00:44,700 --> 00:00:46,290 And we're going to have hashtag 18 00:00:46,290 --> 00:00:49,080 so we can actually see the progress 19 00:00:49,080 --> 00:00:51,210 for our assets installing. 20 00:00:51,210 --> 00:00:52,860 So I'm going to do our command here. 21 00:00:53,760 --> 00:00:54,593 Okay. 22 00:00:54,593 --> 00:00:55,770 We see how fast that was, right? 23 00:00:55,770 --> 00:00:57,540 There was barely any time. 24 00:00:57,540 --> 00:00:58,373 We just blinked. 25 00:00:58,373 --> 00:00:59,700 It was already done for us. 26 00:00:59,700 --> 00:01:01,260 This is a very quick way to do it. 27 00:01:01,260 --> 00:01:04,343 Now this was done locally from my packages folder. 28 00:01:04,343 --> 00:01:07,500 So I do have this package installed locally, 29 00:01:07,500 --> 00:01:08,940 and I just installed it very quickly 30 00:01:08,940 --> 00:01:11,010 using the package manager there. 31 00:01:11,010 --> 00:01:12,120 Another set of commands we're going to use, 32 00:01:12,120 --> 00:01:13,708 we're going to use the QI option 33 00:01:13,708 --> 00:01:17,160 which lists information about that package for us. 34 00:01:17,160 --> 00:01:18,993 So we're going to do Korn Shell again. 35 00:01:19,920 --> 00:01:22,380 And we see there's a lot of good key information. 36 00:01:22,380 --> 00:01:25,293 Version information, which would be very useful. 37 00:01:25,293 --> 00:01:27,360 The date we installed the package, 38 00:01:27,360 --> 00:01:30,480 bill dates, descriptions, you get the picture. 39 00:01:30,480 --> 00:01:32,400 So again, this just a quick way to get a lot 40 00:01:32,400 --> 00:01:33,840 of information about this package 41 00:01:33,840 --> 00:01:36,000 because it'll be very important in the future 42 00:01:36,000 --> 00:01:39,180 to understand the version and the releases of the packages 43 00:01:39,180 --> 00:01:41,610 because some things are dependent upon others 44 00:01:41,610 --> 00:01:44,040 and we'll have a lot of incompatibilities 45 00:01:44,040 --> 00:01:47,100 at times for different versions of programs. 46 00:01:47,100 --> 00:01:50,010 So this one verify the actual installation 47 00:01:50,010 --> 00:01:50,910 of the Korn shell. 48 00:01:50,910 --> 00:01:54,120 So I'm do to sudo, Red Hat package manager. 49 00:01:54,120 --> 00:01:55,420 We going to do a robust mode, 50 00:01:57,000 --> 00:01:58,923 verify we want to do the Korn Shell. 51 00:02:00,210 --> 00:02:01,200 Okay. Now this just shows 52 00:02:01,200 --> 00:02:03,690 that this package is actually installed 53 00:02:03,690 --> 00:02:05,943 and what files are installed with it. 54 00:02:06,840 --> 00:02:08,789 Now we don't always have to see what's installed. 55 00:02:08,789 --> 00:02:11,440 We want to just get a quick list of, we can do the RPM 56 00:02:12,360 --> 00:02:15,900 and we do QL, quick list 57 00:02:15,900 --> 00:02:16,923 Korn shell. 58 00:02:18,330 --> 00:02:19,170 Last, but not least 59 00:02:19,170 --> 00:02:21,720 we have to remove the packages at times. 60 00:02:21,720 --> 00:02:24,090 So we'll do the sudo RPM 61 00:02:24,090 --> 00:02:27,210 and that's going to be the erase command, KSH 62 00:02:27,210 --> 00:02:28,983 and we'll see it's quick and easy. 63 00:02:30,210 --> 00:02:34,560 If we want to verify that this was gone, we could check. 64 00:02:34,560 --> 00:02:35,489 RPM 65 00:02:35,489 --> 00:02:38,373 We'll see if we have any info about it. 66 00:02:40,980 --> 00:02:42,730 And we see that it's not installed. 67 00:02:43,860 --> 00:02:45,780 The next package manager we're going to go over is 68 00:02:45,780 --> 00:02:47,550 the yum package manager. 69 00:02:47,550 --> 00:02:50,880 Again, this works for dot RPM files and it's the preferred 70 00:02:50,880 --> 00:02:54,357 method over RPM because of the features and it also 71 00:02:54,357 --> 00:02:57,420 installs dependencies that are required for the packages. 72 00:02:57,420 --> 00:02:59,820 So, first thing we want to do, we're going to use the very 73 00:02:59,820 --> 00:03:02,730 secure FTP Damon. 74 00:03:02,730 --> 00:03:04,140 So we're going to look this up. 75 00:03:04,140 --> 00:03:05,940 There's a little information about it. 76 00:03:05,940 --> 00:03:07,473 Very secure, OTD. 77 00:03:10,680 --> 00:03:11,880 Again, it's just another way 78 00:03:11,880 --> 00:03:14,100 of getting information about a package. 79 00:03:14,100 --> 00:03:16,083 Again, we could do this with RPM, but we're going to use this 80 00:03:16,083 --> 00:03:17,310 with yum. 81 00:03:17,310 --> 00:03:20,040 This is one of the most widely used package managers 82 00:03:20,040 --> 00:03:24,570 for Red Hat, even Red Hat themselves recommend using the yum 83 00:03:24,570 --> 00:03:26,310 when they develop the RPM. 84 00:03:26,310 --> 00:03:29,730 Okay, so we're going to do is install again, a local package. 85 00:03:29,730 --> 00:03:32,580 Now the yum specifies this. 86 00:03:32,580 --> 00:03:34,713 So we have to do local install. 87 00:03:37,110 --> 00:03:38,433 We're do packages. 88 00:03:40,890 --> 00:03:42,190 Going to use our very secure. 89 00:03:46,200 --> 00:03:48,270 All right, we see it got through the step 90 00:03:48,270 --> 00:03:50,370 and we're going to click yes here. 91 00:03:50,370 --> 00:03:51,270 Now, just to note 92 00:03:51,270 --> 00:03:54,480 if we we're to do this and we was to do the Y option. 93 00:03:54,480 --> 00:03:58,290 So yum dash Y, that will select yes 94 00:03:58,290 --> 00:04:00,360 for any other prompts that would be going 95 00:04:00,360 --> 00:04:02,460 through throughout the installation process. 96 00:04:02,460 --> 00:04:03,723 'Cause sometimes it'll ask us 97 00:04:03,723 --> 00:04:06,570 would we like to install certain dependencies 98 00:04:06,570 --> 00:04:10,059 or if certain processes of the installation are okay. 99 00:04:10,059 --> 00:04:11,550 A lot of times they are. 100 00:04:11,550 --> 00:04:14,190 So we just use the dash Y option. 101 00:04:14,190 --> 00:04:16,740 So that allows us to have a quick transition 102 00:04:16,740 --> 00:04:18,029 into the installation. 103 00:04:18,029 --> 00:04:22,176 Okay. And also check out this yum provides command. 104 00:04:22,176 --> 00:04:25,980 What that does is this allows us to see what package 105 00:04:25,980 --> 00:04:28,110 does a particular file belong to. 106 00:04:28,110 --> 00:04:32,163 So we going to check out the VSFTD, the config file. 107 00:04:35,880 --> 00:04:38,400 And you can see that it associates this file 108 00:04:38,400 --> 00:04:40,770 with the package that we just installed. 109 00:04:40,770 --> 00:04:43,230 Again, just another tool to give us information 110 00:04:43,230 --> 00:04:45,510 about different configuration files 111 00:04:45,510 --> 00:04:49,050 or other files that's associated with a particular package. 112 00:04:49,050 --> 00:04:51,450 Last, but not least we're going to remove the package. 113 00:04:51,450 --> 00:04:52,620 Use the Y option here. 114 00:04:52,620 --> 00:04:53,613 So sudo yum. 115 00:04:54,623 --> 00:04:56,220 Yes to everything. 116 00:04:56,220 --> 00:05:00,393 Remove very secure file transfer protocol Damon. 117 00:05:02,130 --> 00:05:02,963 All right. 118 00:05:04,920 --> 00:05:06,630 So just to summarize: 119 00:05:06,630 --> 00:05:09,990 we went over how to use a package manager in Linux 120 00:05:09,990 --> 00:05:12,390 and we're going to focus on the Red Hat Linux. 121 00:05:12,390 --> 00:05:15,150 So we used the yum for the 122 00:05:15,150 --> 00:05:18,420 dot RPM files because that's a recommended package manager 123 00:05:18,420 --> 00:05:22,470 but we can also, again, still use the RPM package manager 124 00:05:22,470 --> 00:05:25,023 which was originally created by Red Hat Linux. 125 00:05:25,890 --> 00:05:27,660 And remember the differences between the yum 126 00:05:27,660 --> 00:05:30,112 and the RPM is that the yum will automatically 127 00:05:30,112 --> 00:05:32,250 install dependencies that are required 128 00:05:32,250 --> 00:05:33,903 for a lot of our programs to run. 129 00:05:35,190 --> 00:05:36,720 Thank you for sticking with me through this walkthrough 130 00:05:36,720 --> 00:05:38,520 and I'll see you in the next lesson.