How to see why apt has a specific package version installed?
12115
Can't install wine from winehq.org on Ubuntu (actually Lubuntu) 18.04 LTS
135452
How do you see what packages are available for update
41054
How can I check the available version of a package in the repositories?
116858
How to find the list of all available packages along with the lastest version number available in the repositories?
35508
How to find program name(s) of an installed package?
115838
List packages on an apt based system by installation date
5342
How can I check if a package is installed (no superuser privileges)?
9829
How do I show apt-get package management history via command line?
35146
Will apt-get dist-upgrade upgrade my system to newer version?
7101
How to find out which (not installed) Debian package a file belongs to?
106595
Check Software Version
96810
Given a package name, how can I find out what will change if I install the package?
119896
How to find a Python package's dependencies
30838
How to install specific Ubuntu packages, with exact version?
114896
How can I see all versions of a package that are available in the archive?
116869
Is it possible to know from apt if the package was installed explicitly or as a dependency of another package?
14163
Finding package name of installed software