How to check available packages in ubuntu server?
120872
What is apt-cache used for?
46618
How can I know what programs some apt-get package contains?
22506
Is there a way to find out whether an updated program/package lands in the official Ubuntu release repositories?
116
How do I find the package that provides a file?
55857
How do I get a list of obsolete packages?
5954
How to list all installed packages
35318
How do I list the default installed packages?
103196
How to find list of available shells by command-line?
151411
How can I know if a virtual package is "installed" on a Debian system?
17656
How can I check dependency list for a deb package
70287
How to get a list of all the commands available for Ubuntu?
29175
Is there any command to list "local" packages? like in Synaptic GUI
56591
Finding all software packages in Debian that provide a particular alternative
22736
How do I find the build dependencies of a package?
32426
How to install packages?
73749
How to find manually installed packages?
53134
How can I get a list of the biggest packages currently installed in order?