How to simulate the environment cron executes a script with?

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Add this to your crontab (temporarily):

* * * * * env > ~/cronenv

After it runs, do this:

env - `cat ~/cronenv` /bin/sh

This assumes that your cron runs /bin/sh, which is the default regardless of the user’s default shell.

Footnote: if env contains more advanced config, eg PS1=$(__git_ps1 " (%s)")$, it will error cryptically env: ": No such file or directory.

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