Note: help and version output are generated by a naïve script which tries a few variants of
<command> --help, <command> -h etc. to find the command's help and version info.
Sometimes it gets lucky, sometimes it doesn't; if the output below looks wrong, it probably is.
swap-offset -V (return code: 22)
Failed to read swap signature: file is too short.
swap-offset (return code: 22)
Usage: swap-offset <file_name>