Verify
Ubuntu
- Gnome (default): https://tutorials.ubuntu.com/tutorial/tutorial-how-to-verify-ubuntu
- Ubuntu Mate: https://ubuntu-mate.org/how-to-verify-downloads/
- Kubuntu:https://help.ubuntu.com/community/VerifyIsoHowto
Debian
https://www.debian.org/CD/verify
Fedora
Linux Mint
https://linuxmint.com/verify.php
Manjaro
https://manjaro.org/get-manjaro/ (see the last chapter How to verify our install media)