Dreambiz said:
* I recall seeing a terminal prompt return (with no result message one way or another).
This is odd. You should have seen a new shell prompt after the
mv command completed successfully. If you didn't, there was a problem.
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Which brings up a question. Why would there a /Users/'newusername' folder at all? It was supposed to be renamed from oldusername to newusername, but the 'newusername' user folder (creation date of when I first tried this) exists and seems to be blank/generic. Does this need to be deleted before the old one can be renamed to the new? Is it possible that there was some error initially and then logging on to the new user created a generic Users/'newusername'? Then, when the process was repeated (correctly) the 'rename' could not succeed because there was already one of that name in existence?
It does sound like something interrupted the process. If the "new" folder is empty, try deleting it and then running the command again.