Record a list of installed packages and configurations before installing a higher version of Ubuntu?
8673
How to backup settings and list of installed packages
80816
Generate a log of all the installs on a system (whether apt-get/yum/pip/npm/...)
20819
Generating list of manually installed packages and querying individual packages
70138
How can I find out what modifications a program’s installer makes?
9829
How do I show apt-get package management history via command line?
109126
How to know the time/date of when the packages are installed?
68366
Checking installed packages
88531
Is there a tool/website to compare package status in different Linux distributions?
53496
list all suggested packages for currently installed packages
67802
How to get a list of files for a package I haven't installed yet?
54696
Using apt-get how to check have installed latest version ?
84349
How to know default software version for all Ubuntu software for a specific Ubuntu version?
8780
How can I find out in which distributions a package is available?
55386
Installed Package information, specifically Status
148676
Where is the result of the "apt-get update" package list stored
71959
Is there any simple way to access installed programs?
137517
Automatically keep current version of config files when apt-get install