Re: One simple trick...
"Move/mv protects you from your errors."
Not entirely. I had a similar experience with mv. I was left with a running shell so could cd through the remains of the file system end list files with echo * but not repair it..
Although we had the CDs (SCO) to reboot the system required a specific driver which wasn't included on the CDs and hadn't been provided by the vendor. It took most of a day before they emailed the correct driver to put on a floppy before I could reboot. After that it only took a few minutes to put everything back in place.