Wily old release repositories
1520
How to install software or upgrade from an old unsupported release?
44613
PPA & Packaging: Having versions of packages for multiple distros
154248
How to see all packages in a package repository? Website or command line?
36848
How do I safely install an older/newer version of Python?
7562
How to get ALL kinds of reverse package dependencies: reverse-depends pendant for non-Ubuntu distributions
51598
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?
135452
How do you see what packages are available for update
116858
How to find the list of all available packages along with the lastest version number available in the repositories?
65612
How to delete/remove manually apt added repositories?
131474
How to only install updates from a specific repository?
95336
Installing particular versions when repo has newer versions?
73525
Do old package versions in CentOS mean that they do not have security fixes?
113233
Is removing old linux-headers and linux-image packages safe?
23096
How to remove obsolete packages after failed release upgrade via do-release-upgrade on Ubuntu?
152479
Why are apt-get repositories hardcoded to a specific release?
132933
Is there a tool to update my PPA sources.list entries after upgrading?
93458
How can I ensure that old documents will compile in the future?