$ rename '' aaaaa- /usr/bin/xdpyinfo rename: /usr/bin/xdpyinfo: rename to /usr/binaaaa-/xdpyinfo failed: No such file or directory
> mkdir /tmp/test_dir > touch /tmp/test_dir/test_file > rename '' aaaaa- /tmp/test_dir/test_file > ls /tmp/test_dir aaaaa-test_file