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Microsoft won’t let you close OneDrive on Windows until you explain yourself
(www.theverge.com)
This is a most excellent place for technology news and articles.
Which in almost all cases you never have to do, unless you go for like Arch or Gentoo or something, which nobody should do unless they know what they're getting into.
If you installed something like Linux Mint, there's no reason why you'd ever need to go into the terminal. It's just an option for if you want to use it, like the command prompt, powershell, or registry in Windows.