How to install software from old repository?
1520
How to install software or upgrade from an old unsupported release?
139458
How to download packages from a command-line given repository?
60351
How can I update to a newer version of Git using apt-get?
126343
How to downgrade a package via apt-get?
91502
Undo git pull, how to bring repos to old state
19395
How can I install more recent versions of software than what Debian provides?
16500
How do you merge two Git repositories?
113710
Reinstall software-center in Ubuntu 16.04
55857
How do I get a list of obsolete packages?
130358
How to build all my installed package from sources?
103414
How do I install wallpapers from older releases?
23236
Manually Installed new Python to /usr/bin, how to get Repo version back?
78094
Is it possible to mirror the apt repositories?
121470
How to install 'add-apt-repository' using the terminal?
110896
Package installation - Outdated repository
8962
How to install multiple versions of the same software?
127852
How do I update a program installed from a manually-downloaded deb package?