How do I add packages to my system when I'm not using the Server edition?
12908
What is a terminal and how do I open and use it?
29362
How do I install a single package from Debian testing or unstable on stable?
5162
How to fake a package version installed?
30838
How to install specific Ubuntu packages, with exact version?
119130
Installation of packages
149428
How do I refresh the package list?
134192
How to make sure I'm not using any proprietary software after installation?
134143
How do I know what packages I need to install?
105208
How can I check if a PPA has packages for another Ubuntu version?
112955
How can I upgrade Ubuntu from 19.10 to 20.04 without losing packages?
56863
What are the differences between Desktop, Server, and Alternate Installs?
75444
Painless way to install a new version of R?
73173
How to Fix Broken Packages?
66868
Install package along with all the dependencies offline
138386
Can I install items on Ubuntu, without using the command line?
81648
How to download a software package with all dependencies and sub-dependencies?
16782
Install packages from newer release without building (apt pinning)