i couldn't use move:
$ mv thing/ ../things
mv: cannot move 'thing' to '../things/things': Directory not empty
An i can not move it. i do not understand why. I have to google and find
at stackoverflow:
Though its man page doesn't document it, mv will refuse to rename a
directory to another directory if the target directory contains files.
This is a good thing in your case because you turn out to want to
merge the content of the source into the target, which mv will not do.
https://askubuntu.com/questions/269775/mv-directory-not-empty
Ah, the target directory does exist! Hmm... But i'd like the message to
be like:
$ mv thing/ ../things
mv: cannot move 'thing' to '../things/things': Targetdirectory not empty
^ this little thing here,
it explains everyting.
Change text from 'Directory not empty' to 'Targetdirectory not empty'.
