[CentOS] Shell script to list group members

Quoting Tim Alberts <talberts at msiscales.com>:

> Barry Brimer wrote:
> > With spaces separating groups:
> >
> > egrep -e '^groupname:' /etc/group | awk -F : '{ print $4 }' | sed -e 's/,/
> /g'
> >
> > With commas separating groups:
> >
> > egrep -e '^groupname:' /etc/group | awk -F : '{ print $4 }'
>
> I'm sorry, I didn't specify, I'm using LDAP for user/group management.
> Ideally a command like 'groups' would be nice, except it would be the
> inverse, it would print the users in a group, not the groups a user
> belongs to.

With commas separating groups:

getent group | egrep -i '^groupname:' | awk -F : '{ print $4}'

With spaces separating groups:

getent group | egrep -i '^groupname:' | awk -F : '{ print $4}' | sed -e 's/,/
/g'