dpkg-reconfigure -V (return code: 1)
/usr/sbin/dpkg-reconfigure must be run as root
dpkg-reconfigure --help (return code: 1)
Usage: dpkg-reconfigure [options] packages
-u, --unseen-only Show only not yet seen questions.
--default-priority Use default priority instead of low.
--force Force reconfiguration of broken packages.
--no-reload Do not reload templates. (Use with caution.)
-f, --frontend Specify debconf frontend to use.
-p, --priority Specify minimum priority question to show.
--terse Enable terse mode.