Adding new repositories to obsolete distribution?
50553
Can I mix sources from different ubuntu versions?
23302
How do I install/upgrade r-base to the latest version?
78094
Is it possible to mirror the apt repositories?
123299
How do I update or sync a forked repository on GitHub?
13107
How to install updates via command line?
95336
Installing particular versions when repo has newer versions?
30645
How to install (old) packages for Ubuntu 9.04?
94102
How do I add a software source?
35146
Will apt-get dist-upgrade upgrade my system to newer version?
19565
Restore default apt repositories in sources.list from command line
15021
How to create a local APT repository?
113379
Updating the repository isn't working
21219
How can I add an empty directory to a Git repository?
154815
How do I add a repository from behind a proxy?
66285
Package repository down, how to relocate?
77692
How do I update Drush to the latest available version?
147458
How can I duplicate my existing software packages on a new system?