USERGROUPS is explained in detail in adduser.conf (5). The new user's primary group ... POOL and GID_POOL option, documented in adduser.conf (5). Add a system user If calledUSERGROUPS is explained in detail in adduser.conf (5). The new user's primary group ... POOL and GID_POOL option, documented in adduser.conf (5). Add a system user If calleddebug is specified SEE ALSO adduser.conf (5), deluser.conf (5), adduser (8), deluser (8), groupadddebug is specified SEE ALSO adduser.conf (5), deluser.conf (5), adduser (8), deluser (8), groupadd