group
GROUP(5)                   Linux Programmer's Manual                  GROUP(5)
NAME
       group - user group file
DESCRIPTION
       /etc/group  is  an  ASCII  file which defines the groups to which users
       belong.  There is one entry per line, and each line has the format:
              group_name:passwd:GID:user_list
       The field descriptions are:
       group_name
              the name of the group.
       password
              the (encrypted) group password.  If  this  field  is  empty,  no
              password is needed.
       GID    the numerical group ID.
       user_list
              all the group member's user names, separated by commas.
FILES
       /etc/group
SEE ALSO
       login(1), newgrp(1), passwd(5)
Linux                             1992-12-29                          GROUP(5)