How to backup programs before upgrading Debian?
86913
How to create a list of installed packages for easy/automatic reinstall after disk is formatted
72731
Legacy Debian versions and Bash Shellshock
131490
How do I save Updates/Installed Packages?
29362
How do I install a single package from Debian testing or unstable on stable?
112955
How can I upgrade Ubuntu from 19.10 to 20.04 without losing packages?
97346
Is it possible to skip releases during an upgrade?
134997
How to back up Boot Camp before upgrading my hard drive to an SSD?
11556
Can I smoothly upgrade from one LTS to next LTS release?
66503
How to download Ubuntu Server backups automatically?
68327
How do I backup all files? (.dbus and dconf backup problems)
54037
How to implement package install suggestion on Debian?
130904
Install programs without an internet connection on Debian
10709
Can i upgrade ubuntu without losing my apps and files?
127852
How do I update a program installed from a manually-downloaded deb package?
43281
Upgrade Debian Jessie (8) to Buster (10) possible or need to go sequential in versions upgrades?
126382
Where does aptitude store files during an upgrade?
109902
Will I lose the already installed applications if I upgrade from ubuntu 18.04 to 20.04