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Installing applications in Ubuntu
Perhaps you're accustomed to installing Windows applications by "simply" manually downloading the installer of an application that you fancy, from some website. In Ubuntu this works differently and even easier. You don't download anything manually from a website anymore.
Instead, you install only from the software repositories of Ubuntu itself. A lot easier, because you don't have to spend time searching. No more manual downloads!
The updates from Ubuntu apply not only to Ubuntu itself, but also to all software that has been installed from the repositories!
Installing software is also possible by installing manually, like in Windows. This third way bypasses the inherent security of the repositories and is therefore discouraged.
a. Establish internet connection.
b. In the side panel, click on Ubuntu Software Center (the shopping bag).
c. In the Search box, type the name of the application you want, for example synaptic if you want to install the versatile lightweight installer Synaptic. Or a descriptive term, like installer.
The search begins automatically, don't press Enter.
d. Click on Synaptic Package Manager and press the arrow button. Then click Install.
e. That's it! Synaptic will be downloaded and installed automatically. A menu item for Synaptic will be added automatically as well.
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Synaptic is not part of the default Ubuntu installation, but you can install it by means of Software Center.
Synaptic also works with queries, much like you use Google. In order to use it, you need to establish internet connection first.
Synaptic can be used like this: for example, you're looking for a simple notepad that's even leaner than the simple text editor Gedit. You've heard of the application Leafpad, and you want to give it a try.
Click on the grey Ubuntu logo (Dash home). Query: synaptic.
Click on Synaptic Package Manager.
Don't use the quick search field (it's buggy), but press the Search button in the toolbar of Synaptic and type leafpad in the popup screen.
Press Search in the popup screen.
Synaptic will then present you with a number of software packages that have something to do with Leafpad. In most cases you simply choose the package with the most appropriate name, in this case leafpad.
Notice also the description of the package, which appears below when you click on a package.
Tick leafpad and press the button Apply in the toolbar.
Now Synaptic fetches Leafpad from the repositories of Ubuntu, along with the necessary supporting files, and installs it for you. A menu item will be added automatically.
Easy as can be!
For manual installation you'll need to download an installer with the extension .deb (from Debian: Ubuntu is based on Debian). Simply doubleclick it like you would a Windows installer (.exe) in Windows.
Installers with the extension .rpm (Red Hat Package Management) are useless in Ubuntu: those are installers made for other kinds of Linux distributions that are rpm-based.
You can also manually install Linux software that has no installer. But that's usually an awful job and definitely not suitable for beginners.
a lot more of them on this website!
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