netgroup(4)                       NFS R4.11                      netgroup(4)


NAME
       netgroup - list of network groups

DESCRIPTION
       netgroup defines network wide groups, used for permission checking
       when doing remote mounts, remote logins, and remote shells.  For
       remote mounts, the information in netgroup is used to classify
       machines; for remote logins and remote shells, it is used to classify
       users.  Each line of the netgroup file defines a group and has the
       format

              groupname member1 member2 ....

       where memberi is either another group name, or a triple:

              (hostname, username, domainname)

       Any of these three fields can be empty, in which case it signifies a
       wild card.  Thus

              universal (,,)

       defines a group to which everyone belongs.

       A gateway machine should be listed under all possible hostnames by
       which it may be recognized:

              wan (gateway,,) (gateway-ebb,,)

       Field names that begin with something other than a letter, digit or
       underscore (such as `-') work in precisely the opposite fashion.  For
       example, consider the following entries:
              justmachines   (analytica,-,dgux)
              justpeople     (-,babbage,dgux)

       The machine analytica belongs to the group justmachines in the domain
       dgux, but no users belong to it.  Similarly, the user babbage belongs
       to the group justpeople in the domain dgux, but no machines belong to
       it.

       The domainname field refers to the NIS domain in which the triple is
       valid, not the name containing the trusted host.  Adding a netgroup
       entry to the local netgroup file is not sufficient to define a
       netgroup, NIS must be used.

FILES
       /etc/netgroup

SEE ALSO
       makedbm(1M), ypserv(1M), getnetgrent(3N), exports(4).


Licensed material--property of copyright holder(s)