Re: Why mv have no '-R'

Thanks to everybody.

So I can take it this way,
'mv' does not really move data(in one file system), it just renames
something--it can be a file or a directory.
While 'cp' copies data, so I have to 'cp' all the files recurisively,
in order to copy a directory into another one!

But another problem: if file2 already exists, in the following
$mv file1 file2
file1 will be renamed as file2, but file2 still exists 'cause 'mv' did
not move data and file2 won't be overwritten, right?
.