Roberto C. Sánchez schrieb: >>> New users have gid 100 set as their primary group by default. So, new >>> users are members of the group without having to be added to the group >>> in /etc/groups.
That depends on your configuration. | # /etc/adduser.conf: `adduser' configuration. | # See adduser(8) and adduser.conf(5) for full documentation. [...] | # The USERGROUPS variable can be either "yes" or "no". If "yes" each | # created user will be given their own group to use as a default. If | # "no", each created user will be placed in the group whose gid is | # USERS_GID (see below). | USERGROUPS=yes | | # If USERGROUPS is "no", then USERS_GID should be the GID of the group | # `users' (or the equivalent group) on your system. | USERS_GID=100 > Quite right. It seems that I probably made that change a very long time > ago, long enough ago so that it just seemed like the standard > configuration to me. >From <https://wiki.debian.org/UserPrivateGroups>: | Debian has been using (creating) user private groups by default almost | from the beginning. However, UPGs where not fully enabled on newly | installed systems since release 2.2., because the central umask | adjustment for UPGs, as configured in /etc/login.defs, was broken with | the inclusion of PAM. This feature was only reintroduced with | libpam-umask in release 6.0 (Squeeze). -thh
