I was reading a book on UNIX when I came across this question. You have a directory structure
$HOME/a/a/b/c
where the first a is empty. How do you remove it and move the lower directories up? I have looked on the man pages of the commands rmdir and rm but could find nothing. Please help me.
You should move subdirectory before remove parent directory. So..
mv $HOME/a/a $HOME
rmdir $HOME/a
But, this does not work because name a
collide.
Rename the parent directory to avoid name collision.
mv $HOME/a $HOME/temp_a
mv $HOME/temp_a/a $HOME
rmdir $HOME/temp_a