groupadd(8) - Linux manual page
https://www.man7.org/linux/man-pages/man8/groupadd.8.htmlIf the groupname already exists in an external group database such as NIS or LDAP, groupadd will deny the group creation request. EXIT VALUES top The groupadd command exits with the following values: 0 success 2 invalid command syntax 3 invalid argument to option 4 GID is already used (when called without -o ) 9 group name is already used 10 can't update group file