There is an issue open on Lemmy’s github about merging communities of the same name together in the ui by an “all” button, but sadly it’s been inactive for a year: #1113

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How about “Works everywhere and is available as a flatpak for convenience”? Maybe that was the intended message?

That will just wait for command to finish properly and then run yes.

What you want to run is yes | command, so it spams the command with confirmations.