finding a package and what version is in various distributions (stable release)
8780
How can I find out in which distributions a package is available?
55386
Installed Package information, specifically Status
123153
How to tell if a certain package exists in the apt repos?
151498
How to find out if a specific package is installed on Debian?
2236
Why don't the Ubuntu repositories have the latest versions of software?
54696
Using apt-get how to check have installed latest version ?
121912
How can I search for packages depending on a exact package?
8962
How to install multiple versions of the same software?
5793
Find (and reinstall) packages with corrupted files (without breaking anything)
89366
Which package version am I using?
119943
Where can I find a repository for older unsupported releases?
30828
How can I tell which package an executable came from?
110896
Package installation - Outdated repository
34373
Where can I get the latest Ubuntu Alpha or Beta?
22506
Is there a way to find out whether an updated program/package lands in the official Ubuntu release repositories?
27076
How to see package version without install?
106595
Check Software Version