How is it that I've been writing shell scripts for over 15 years now to automate processes, and I've only just discovered $SUDO_USER today? I feel like that's a MASSIVE oversight.

@twann @mike can either of you provide a link, or personal clarification what that is and how to use it?

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@mike @thorn @twann another nicety might be $SUDO_PROMPT: Used as the default password prompt unless the -p option was specified.

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