How can I find out why a package was installed?
6440
Can I see why a package is installed?
99406
How to list user installed applications (not packages)?
1277
What does it mean that a package is "set to manually installed?"
9829
How do I show apt-get package management history via command line?
67461
How can I find the version number of an installed package via dpkg?
30828
How can I tell which package an executable came from?
24368
How can I list all files which have been installed by an APT package?
67802
How to get a list of files for a package I haven't installed yet?
16502
How can I know the dependencies of a certain package?
118297
How to find which PPA contains a specific package?
5470
Is it possible to find out what program or script created a given file?
157307
Where do packages installed/upgraded with APT get stored?
7101
How to find out which (not installed) Debian package a file belongs to?
15828
How to find which package provides a file?
27076
How to see package version without install?
49658
Elegant way to check for missing packages and install them?
5793
Find (and reinstall) packages with corrupted files (without breaking anything)