On Friday 28 February 2014 10.53:56 Guido Berhoerster wrote:
I'd like to propose the following addition to the packaging policy regarding users and groups (https://en.opensuse.org/openSUSE:Packaging_guidelines#Users_and_Groups):
The names of users and groups which are created by a package should be prefixed with an underscore "_". This creates a safe namespace for the distribution and avoids collisions between system group and usernames which are created by packages and regular group and usernames. Existing users and groups can be renamed with the following scriptlet: %pre getent group GROUP >/dev/null && groupmod -n _GROUP GROUP getent group _GROUP >/dev/null || groupadd -r _GROUP getent passwd USER >/dev/null && usermod -l _USER USER getent passwd _USER >/dev/null || useradd -r -g _GROUP -d HOMEDIR -s /sbin/nologin -c "user for PACKAGENAME" _USER
I'm not in favor of this kind of solution. Simply due to the fact that I already use _ as an identifier for customers groups used samba & nfs serveurs. It clearly separate my groups from anything coming from packages.
If you run your script there's a risk to have collision with my already setup group like a _www like inserting package user in a personal group
What about using % ? :-)