If you want, uh, to, uh, remove the configuration files at the same time as the package, you can
use purge option here.
So in previous lecture, we used to remove here, but remove is just remote application, but we will
now, uh, remove the configuration, file a civil with powered, uh, command here.
Sudo apt get purge here and our application names small.
And type your password, color and operating system password here.
And if if you want.
You will see the task being in real time and you will be asked whether you want continue or not, so
you can enter E to, uh, when you install per your application and then enter.
Um, so as you can see here, there is, uh, our application is perched there.
So you may have noticed along the line the following packages were automatically installed and are no
longer required.
Um.
And no longer required in the article terminals or to keep things simple and modular, many Linux packages
are broken into the software unit that many different programs might use.
When you install snort, you install several dependencies or libraries with it that's not required in
order to run.
So now that you are removing snort with purge dos or the libraries or dependencies are no longer required.
So they are removed, too.
So now I want to show you these updating packages here.
Software repositories here periodically updated with new software or versions of existing software.
News updates don't reach you automatically, so you have to request them in order to apply these updates
to your own system.
Updating isn't the same as upgrading updating the simpler updates the list of packages available for
download from the repository where upgrading will upgrade the package to the latest version in the repository.
You can update your individual system by entering UM.
APT, get.
I will just sort of hear APT get common, followed by the keyword update.
So.
This whole search trod all the packages on your system and checked whether updates are available.
So if so, the updates are downloaded here.
Uh, so the soonest available in software requests are in your system will be updated here.
So it might take, uh, nine.
As you can see, there is a, uh, how many kilobytes per second is downloading and how many packages
need to normalize here.
And so.
It's downloading now.
It might take five seconds, so I want to show you what you will say after successful off the updating,
so if the update is successful, your terminal will start reading package lists.
Done, as you can see here.
Not at the name of the repository.
And the volume is time, size and so on might be different than your system here.
Uh, so now I want to show you upgrading packages, so to upgrade the existing packages on your system,
use a p t, uh, a P to get up grade because upgrading your packages may make changes to your software.
You must logged in as root or used a pseudo here pseudo command before entering APT get upgrade.
So this command will upgrade every package in your system that apt norms meaning only do stored in a
repository here.
Upgrading can be time consuming, so you might not be able to use your system for a while.
As you can see, I just need.
Uh.
Ten megabyte of something downloading here.
So let's continue here.
So if your system is old, so I mean, uh, if you don't know that the um old version of Linux and uh,
you might have uh and very good, uh, sort of ish applications to update here, but in my case, it's
uh.
Good do so for now, I will close here, so for closing, just press controlled plus the shortcuts or
see sort of shortcuts in one time so we can add the repositories to source that list file.
So the servers that hold the software for particular distribution of Linux are known as very poor seed
Tor for use here.
So nearly every distribution has its own repositories of software developed and configured for that
distribution.
So that might not work well or at all with other distributions altered, and these researchers often
contain the same or similar software.
They are identical, and they sometimes have different versions of the same software or entirely different
software.
You will, of course, be using the Colina repository, which has a large amount of security and hacking
software.
But because they specialize in schools and hacking, it doesn't include some special software and tools
and even some run of the mill software.
It's worth adding a backup ripper story or tool that your system can kind of research fraud in case
it doesn't find its specific software in the repository.
So the repositories your system will search for software are stored in the sources that list file,
and you can alter this file to to define from whichever source you want to download software.
Uh, so, yeah, I often want repositories after the Kali repositories in my sources that at least file
that way, then I request to download the new software package.
My system will first look in the color of history, and if the software package isn't there, it will
look in the Ubuntu repository.
You can find the sources that this file in, uh, eighty eighty eight sources.
The list here, as you can see here, I have some additional software.
See it.
And let's open it up with Moshpit.
So mouse pads, I'm sorry, uh, mouse pad.
It is a police source that list.
As you can see here, we have so text while here and then to.
So after entering this command, you shall see in this window, um.
Many Linux distributions divide repositories into separate categories.
For instance, you want to break up breaks out, it's sort of categories like Main Universe, Multiverse,
restricted break points, you.
So I don't recommend using testing experimental or unstable repositories on your sources.
Not this file.
So because they can download problematic software to your system, the software that isn't fully tested
might break your system as well.
So I will open this file shouldn't because it's read only on this system file.
So I supposed to open this file with sudo command here.
So.
When you ask the Donald and you sort of package the system logs sequential at, you're a store is listed
in sauces that list and stops when it finds the desired package.
Check first that the repository is compatible for your system.
Uh, Colleen, like is Wilton, uh, Debian.
So these repositories works pretty well with each of these systems to other repository.
Just edit sources that at least file by adding the name of the repository or to the list and then save
the file.
So say, for example, you want to install Oracle Java eight on column.
No effort to package for Oracle.
Java eight is available as part of the default color sources, but the Quick Search online shows that
the fine folks at Webb will p the aid have created one.
If you are the repository to those sources, you can then install Oracle Java eight with the APT Get
Install Oracle Java eight Installer Command.
At the time of this course, you will need to add the following repositories here for example.
Um?
They're here, much of it here.
How steep?
EPA.
Uh, PPA, EPA, dot, launch pad, launch pad.
Net.
And they were all paid the team Java and one tool for us to main.
And the second request that we built is saucier.
Let's see.
Uh, excellent.
Excellent teaching to appear.
A launch pad.
And that meant that, uh, we all paid the eighteen.
Java.
We're going to criticize.
And me.
But let's save this file here and then.
So the AP team, get off date here.
As you can see here, we're updating.
And now we can you install this file here?
So sudo apt get install Java.
Here, as you can see here, we can install Java packages here.
So we have a quick, graphical user interface based installer here as well.
So new versions of it no longer include a graphical user interface based software installation tool,
but you can always install of one of them with a pretty good command.
So these are the two most common graphical user interface based installation tools are synaptic and
GDP.
So let's install synaptic and, you know, use it to install our support package, so apply to sudo
apt get install synaptic.
And yes.
Uh, and this is stunning now.
Once it's nothing installed, you can start it from settings here.
Umm hmm.
Sitting synaptic package manager as well, you can start it here as well, but you just you can start
it soon for lesson, click here, which is what I will start with the settings option here.
Synaptic Package Manager and uh, paste your password here as you can see it there.
So we open it.
And our synaptic package file.
So now you can search the search for the package you are looking for seem to click on the Search tab.
Uh, here.
And you will find your applications here.