411 REFERENCE · Wikibooks
Using Ubuntu Linux/Software
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
There are lots of software packages inside the Ubuntu repositories; they are divided into categories as follows:
Main: supported, free
Restricted: supported, non-free
Universe: unsupported, free
Multiverse: unsupported, non-free
You may also add 3rd-party repositories.
To install/remove software packages:
Click System -> Administration -> Ubuntu Software Centre (enter your password as needed)
Mark the things you want to install/remove/upgrade/...
Click apply
If you are using Ubuntu 11.04 or newer, your Ubuntu Software Centre is found in the applications directory.
To install 3rd-party software packages:
Double-click on the downloaded .deb files
Click install
Further reading
MW: Manual: Running MediaWiki on Debian or Ubuntu