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.
dpkg-unhold -V (return code: 2)
dpkg: error: operation requires read/write access to dpkg status area
dpkg-unhold (return code: 1)