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If you want, uh, to, uh, remove the configuration files at the same time as the package, you can

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use purge option here.

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So in previous lecture, we used to remove here, but remove is just remote application, but we will

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now, uh, remove the configuration, file a civil with powered, uh, command here.

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Sudo apt get purge here and our application names small.

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And type your password, color and operating system password here.

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And if if you want.

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You will see the task being in real time and you will be asked whether you want continue or not, so

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you can enter E to, uh, when you install per your application and then enter.

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Um, so as you can see here, there is, uh, our application is perched there.

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So you may have noticed along the line the following packages were automatically installed and are no

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longer required.

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Um.

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And no longer required in the article terminals or to keep things simple and modular, many Linux packages

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are broken into the software unit that many different programs might use.

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When you install snort, you install several dependencies or libraries with it that's not required in

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order to run.

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So now that you are removing snort with purge dos or the libraries or dependencies are no longer required.

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So they are removed, too.

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So now I want to show you these updating packages here.

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Software repositories here periodically updated with new software or versions of existing software.

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News updates don't reach you automatically, so you have to request them in order to apply these updates

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to your own system.

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Updating isn't the same as upgrading updating the simpler updates the list of packages available for

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download from the repository where upgrading will upgrade the package to the latest version in the repository.

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You can update your individual system by entering UM.

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APT, get.

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I will just sort of hear APT get common, followed by the keyword update.

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So.

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This whole search trod all the packages on your system and checked whether updates are available.

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So if so, the updates are downloaded here.

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Uh, so the soonest available in software requests are in your system will be updated here.

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So it might take, uh, nine.

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As you can see, there is a, uh, how many kilobytes per second is downloading and how many packages

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need to normalize here.

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And so.

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It's downloading now.

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It might take five seconds, so I want to show you what you will say after successful off the updating,

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so if the update is successful, your terminal will start reading package lists.

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Done, as you can see here.

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Not at the name of the repository.

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And the volume is time, size and so on might be different than your system here.

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Uh, so now I want to show you upgrading packages, so to upgrade the existing packages on your system,

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use a p t, uh, a P to get up grade because upgrading your packages may make changes to your software.

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You must logged in as root or used a pseudo here pseudo command before entering APT get upgrade.

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So this command will upgrade every package in your system that apt norms meaning only do stored in a

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repository here.

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Upgrading can be time consuming, so you might not be able to use your system for a while.

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As you can see, I just need.

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Uh.

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Ten megabyte of something downloading here.

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So let's continue here.

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So if your system is old, so I mean, uh, if you don't know that the um old version of Linux and uh,

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you might have uh and very good, uh, sort of ish applications to update here, but in my case, it's

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uh.

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Good do so for now, I will close here, so for closing, just press controlled plus the shortcuts or

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see sort of shortcuts in one time so we can add the repositories to source that list file.

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So the servers that hold the software for particular distribution of Linux are known as very poor seed

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Tor for use here.

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So nearly every distribution has its own repositories of software developed and configured for that

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distribution.

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So that might not work well or at all with other distributions altered, and these researchers often

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contain the same or similar software.

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They are identical, and they sometimes have different versions of the same software or entirely different

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software.

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You will, of course, be using the Colina repository, which has a large amount of security and hacking

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software.

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But because they specialize in schools and hacking, it doesn't include some special software and tools

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and even some run of the mill software.

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It's worth adding a backup ripper story or tool that your system can kind of research fraud in case

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it doesn't find its specific software in the repository.

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So the repositories your system will search for software are stored in the sources that list file,

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and you can alter this file to to define from whichever source you want to download software.

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Uh, so, yeah, I often want repositories after the Kali repositories in my sources that at least file

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that way, then I request to download the new software package.

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My system will first look in the color of history, and if the software package isn't there, it will

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look in the Ubuntu repository.

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You can find the sources that this file in, uh, eighty eighty eight sources.

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The list here, as you can see here, I have some additional software.

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See it.

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And let's open it up with Moshpit.

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So mouse pads, I'm sorry, uh, mouse pad.

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It is a police source that list.

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As you can see here, we have so text while here and then to.

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So after entering this command, you shall see in this window, um.

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Many Linux distributions divide repositories into separate categories.

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For instance, you want to break up breaks out, it's sort of categories like Main Universe, Multiverse,

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restricted break points, you.

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So I don't recommend using testing experimental or unstable repositories on your sources.

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Not this file.

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So because they can download problematic software to your system, the software that isn't fully tested

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might break your system as well.

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So I will open this file shouldn't because it's read only on this system file.

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So I supposed to open this file with sudo command here.

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So.

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When you ask the Donald and you sort of package the system logs sequential at, you're a store is listed

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in sauces that list and stops when it finds the desired package.

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Check first that the repository is compatible for your system.

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Uh, Colleen, like is Wilton, uh, Debian.

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So these repositories works pretty well with each of these systems to other repository.

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Just edit sources that at least file by adding the name of the repository or to the list and then save

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the file.

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So say, for example, you want to install Oracle Java eight on column.

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No effort to package for Oracle.

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Java eight is available as part of the default color sources, but the Quick Search online shows that

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the fine folks at Webb will p the aid have created one.

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If you are the repository to those sources, you can then install Oracle Java eight with the APT Get

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Install Oracle Java eight Installer Command.

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At the time of this course, you will need to add the following repositories here for example.

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Um?

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They're here, much of it here.

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How steep?

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EPA.

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Uh, PPA, EPA, dot, launch pad, launch pad.

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Net.

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And they were all paid the team Java and one tool for us to main.

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And the second request that we built is saucier.

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Let's see.

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Uh, excellent.

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Excellent teaching to appear.

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A launch pad.

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And that meant that, uh, we all paid the eighteen.

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Java.

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We're going to criticize.

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And me.

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But let's save this file here and then.

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So the AP team, get off date here.

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As you can see here, we're updating.

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And now we can you install this file here?

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So sudo apt get install Java.

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Here, as you can see here, we can install Java packages here.

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00:12:08,410 --> 00:12:13,990
So we have a quick, graphical user interface based installer here as well.

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00:12:14,380 --> 00:12:21,790
So new versions of it no longer include a graphical user interface based software installation tool,

134
00:12:21,790 --> 00:12:26,440
but you can always install of one of them with a pretty good command.

135
00:12:26,860 --> 00:12:34,090
So these are the two most common graphical user interface based installation tools are synaptic and

136
00:12:34,090 --> 00:12:34,870
GDP.

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00:12:35,230 --> 00:12:41,830
So let's install synaptic and, you know, use it to install our support package, so apply to sudo

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apt get install synaptic.

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And yes.

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Uh, and this is stunning now.

141
00:13:00,210 --> 00:13:04,590
Once it's nothing installed, you can start it from settings here.

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00:13:05,610 --> 00:13:06,300
Umm hmm.

143
00:13:07,990 --> 00:13:14,740
Sitting synaptic package manager as well, you can start it here as well, but you just you can start

144
00:13:14,740 --> 00:13:26,250
it soon for lesson, click here, which is what I will start with the settings option here.

145
00:13:26,260 --> 00:13:32,230
Synaptic Package Manager and uh, paste your password here as you can see it there.

146
00:13:32,260 --> 00:13:34,120
So we open it.

147
00:13:35,970 --> 00:13:37,470
And our synaptic package file.

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00:13:38,070 --> 00:13:45,960
So now you can search the search for the package you are looking for seem to click on the Search tab.

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00:13:46,410 --> 00:13:47,490
Uh, here.

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And you will find your applications here.