Thank you for being willing to share an embarrassing story! I bet we have all made big mistakes, but we aren't all brave enough to admit it.

It is a good lesson to read first, for the reason you point out, AND because reading an explanation of the script can often teach us something.

As someone who writes a lot of scripts that might be used by others, I also take away another lesson about comments. At the point in the script where you should move the files, I think there should be a code comment reminding you to do so. That isn't to forgive lack of reading, but why not make our scripts as friendly as possible?