How to enable softwares sources?
4945
How do I enable the "Universe" repository from the command line?
115722
Apt sources.list problem , packages not found?
106800
How can I contribute to Ubuntu?
61177
How to set up an APT repository?
68037
Get package sources and repository link
135528
Hardcoded "require 'debug'" can't find the sourcefile
5242
How to update software installed via .deb file
8962
How to install multiple versions of the same software?
1687
How to revert software sources back to default?
151656
Installing from source. How to resolve dependencies without destroying the package manager
98450
How to install build-essential?
4448
How do I install applications in Ubuntu?
126457
How can I install commonly used developer tools?
134192
How to make sure I'm not using any proprietary software after installation?
52983
How do I install VMware Player?
79163
Sources missing in /etc/apt/sources.list, how do I get them back?
108911
How can I get root-like permissions so I can download stuff from the software center?