MV(1) General Commands Manual MV(1)
mv - move or rename files and directories
mv file1 file2
mv file ... directory
Mv moves (changes the name of) file1 to file2.
If file2 already exists, it is removed before file1 is moved. If file2
has a mode which forbids writing, mv prints the mode (see chmod(2)) and
reads the standard input to obtain a line; if the line begins with y,
the move takes place; if not, mv exits.
In the second form, one or more files are moved to the directory with
their original file-names.
Mv refuses to move a file onto itself.
If file1 and file2 lie on different file systems, mv must copy the file
and delete the original. In this case the owner name becomes that of
the copying process and any linking relationship with other files is
Mv should take -f flag, like rm, to suppress the question if the target
exists and is not writable.