[Solved] Determine if Git working directory is clean from a script

brentwpeterson Asks: Determine if Git working directory is clean from a script
I have a script which runs rsync with a Git working directory as destination. I want the script to have different behavior depending on if the working directory is clean (no changes to commit), or not. For instance, if the output of git status is as below, I want the script to exit:

git status
Already up-to-date.
# On branch master
nothing to commit (working directory clean)
Everything up-to-date

If the directory is not clean then I would like it to execute some more commands.

How can I check for output like the above in a shell script?

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