And do not forget to wipe your hard disk to make sure you have a clean
re-install!
Jan, you just brightened my monday morning, thanks!
On the more serious side and for the OP: how about the unix way of
combining simple tools to accomplish more complex tasks:
1) use id(1) to get the groups
2a) use sed(1) to get rid of the unwanted ones
2b) use tr(1) to get a newline seperated list and grep(1) to get rid of
the unwanted groups.
3) use tr(1) again to transform the new list to a format suitable for
usermod(8).
4) feed ``usermod -G'' the new list.
OR just ``vi /etc/groups''.
