adduser(8) on Linux
The text 4c1a941209ab, as Debian 8 (Jessie), Debian 7 (Wheezy) shipped it.
add a user or group to the system
Flags it lists
-
--add_extra_groups -
--conf -
--debug -
--disabled-login -
--disabled-password -
--firstuid -
--force-badname -
--gecos -
--gid -
--group -
--help -
--home -
--ingroup -
--lastuid -
--no-create-home -
--quiet -
--shell -
--system -
--uid -
--version