All commands in Linux are the same. What you type in the terminal are called shell commands (you can even use these commands on Mac because we’re all Unix based OS and use bash by default). But each Linux distribution has its own tools, like package manager to install, uninstall, and update the packages and that’s the only biggest difference between Linux distributions beside the desktop environment and init service it uses. And the difference between Ubuntu/Mint and Arch/Manjaro for the package manager is Ubuntu is using Aptitude (apt in terminal command) and Manjaro is using pacman and yaourt. So that’s what you need to know. Other commands like cd, copy, mv, rm, cat, sudo, man, etc that you’ll find the most in tutorials are all the same thing. Application based commands are all the same as long as you got the same application installed, for example you need to install ffmpeg to use ffmpeg commands, install vim to use vim commands, install wget to use wget commands, etc. Hope this helps you understand better about terminal commands.