Verification test for Ubuntu 18.04.3 LTS download
8052
How can I check the integrity of a downloaded Ubuntu CD?
123153
How to tell if a certain package exists in the apt repos?
4450
How can I reproduce the error "package... needs to be reinstalled, but I can't find an archive for it" for testing?
107802
How to check if Ubuntu Desktop or Server is installed?
126520
How to detect true Windows version?
55386
Installed Package information, specifically Status
91008
How can I verify the authenticity of an APK file I downloaded?
40503
How can I check if automatic updates are enabled?
152983
How can I test for POSIX compliance of shell scripts?
41054
How can I check the available version of a package in the repositories?
91288
What software does the Ubuntu installer run on?
51448
How do new package versions find their way to the LTS distribution? (Current example: OpenSSL)
46618
How can I know what programs some apt-get package contains?
80331
Automated way to verify user identity
93880
How do I check system specifications?
134192
How to make sure I'm not using any proprietary software after installation?
42720
How do I check if I have a 32-bit or a 64-bit OS?