NETGROUP(5)               NetBSD File Formats Manual               NETGROUP(5)

     netgroup -- defines network groups


     The netgroup file specifies ``netgroups'', which are sets of (host, user,
     domain) tuples that are to be given similar network access.

     Each line in the file consists of a netgroup name followed by a list of
     the members of the netgroup.  Each member can be either the name of
     another netgroup or a specification of a tuple as follows:

           (host, user, domain)

     where the host, user, and domain are character string names for the cor-
     responding component.  Any of the comma separated fields may be empty to
     specify a ``wildcard'' value or may consist of the string ``-'' to spec-
     ify ``no valid value''.  The members of the list may be separated by
     whitespace; the ``\'' character may be used at the end of a line to spec-
     ify line continuation.  The functions specified in getnetgrent(3) should
     normally be used to access the netgroup database.

     If `files' is specified for the `netgroup' database in nsswitch.conf(5),
     (or no `netgroup' entry is specified), then these functions operate on
     the db(3) version of the netgroup (netgroup.db) file which can be gener-
     ated using netgroup_mkdb(8).  If `nis' is specified then the NIS maps
     `netgroup', `netgroup.byhost', and `netgroup.byuser' are used.

     Lines that begin with a # are treated as comments.

     /etc/netgroup.db  the netgroup database.

     The file format is compatible with that of various vendors, however it
     appears that not all vendors use an identical format.

     getnetgrent(3), exports(5), nsswitch.conf(5), netgroup_mkdb(8)

     The interpretation of access restrictions based on the member tuples of a
     netgroup is left up to the various network applications.

NetBSD 7.0                     January 16, 1999                     NetBSD 7.0

You can also request any man page by name and (optionally) by section:


Use the DEFAULT collection to view manual pages for third-party software.

©1994 Man-cgi 1.15, Panagiotis Christias <>
©1996-2015 Modified for NetBSD by Kimmo Suominen