Ashely, not sure if you have time but you said you were working on it already

Basically we need a basic shell/sed script to traverse all the sub directories of moodledata in a repeatable pattern, looking for backups, and then for each file:

• Save the current working filename in a temp file somewhere (to enable resuming if something fails)
• Make a backup of the file somewhere (just in case)
• Unzip the file
• Run a regexp on moodle.xml, removing password hashes
• Zip up the file again