NetInfo groups and group membership

If (on 10.4.x) you've added a new group and/or added a user to a group via NetInfo Manager (or the command line), but things like id don't seem to show that group, the problem may be a daemon called memberd.

This daemon (I believe new with 10.4) is a helper for group memberships (see the manpage for memberd for full information).

To tell it to reset its cache (so it sees new stuff), simply

sudo /usr/sbin/memberd -r

The user will still need to logout & back in, but this should get the group information updated properly.