How to list packages not installed by apt-get?
39900
How can I get a list of files on my computer that are not "owned" by any package?
144637
How to list all the packages which are installed from PPAs?
55386
Installed Package information, specifically Status
49658
Elegant way to check for missing packages and install them?
14163
Finding package name of installed software
20819
Generating list of manually installed packages and querying individual packages
22736
How do I find the build dependencies of a package?
53498
How do I find packages to install via apt-get
81981
How to test if package is installed?
86185
How to install a list of packages using apt-get?
18306
How to make apt ignore unfulfilled dependencies of installed package?
135055
Why does dpkg --list no longer show all installed programs?
75915
Where can I find a complete list of packages that I have installed after initial installation?
30828
How can I tell which package an executable came from?
13326
How to list all installed software in terminal by recent date installed?
19565
Restore default apt repositories in sources.list from command line
127068
Is it possible to get a list of most recently installed packages?