Usually I work on Linux and I love it. For some sort of reason it just took me an hour to find out if a group existed and what the gid was (ldap was configured). Therefore I make this not to myself: getent is cool!
The easiest way I found to check for group existence is:
$ getent group dba
dba:x:4006:
And, other way around, if you have the gid here’s how you find the group name :
$ getent group 4006
dba:x:4006:
</end reminder>
