This command renames the file "Chapter1" to the new name "Chapter1.bad".

mv Chapter1 garbage

This command renames the file "Chapter1" to the new name "garbage". (Notice that if "garbage" is a directory, "Chapter1" would be moved into that directory).

mv Chapter1 /tmp

This command moves the file "Chapter1" into the directory named "/tmp".

mv tmp tmp.old

Assuming in this case that tmp is a directory, this example renames the directory tmp to the new name tmp.old.