Just a heads up / suggestion:

The update documentation (I not allowed to post the full URL, but it's at ~/migrate.or.upgrade.iredadmin.html#download-the-latest-iredadmin) for updating iRedAdmin could be a skosh simpler, if one simply advised that the bash should be done with sudo.

The script handles things really nicely though!  I bashed it without sudo (Ubuntu 22.04) and it was asking me to authenticate every step.  I did a control-c and sudo'd the script, and it finished up and everything works as expected.  Nice job!