NFSv2/usr/man/man5/netgroup.5

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.\" @(#)netgroup.5 1.2 85/04/04 SMI;
.TH NETGROUP 5 "1 February 1985"
.SH NAME
netgroup \- list of network groups
.SH DESCRIPTION
.IX  "netgroup file"  ""  "\fLnetgroup\fP \(em network groups list"
.I Netgroup
defines network wide groups,
which are used for permission checking when doing
remote mounts, remote logins, and remote shells.
Each line of the
.I netgroup
file defines a group and has the format
.IP
 groupname member1 member2 ....
.PP
where member\fIi\fP\| is either another group name, or a triple:
.IP
 (hostname, username, domainname)
.PP
Any of three fields can be empty,
in which case it signifies a wild card.
Thus
.IP
 universal (,,)
.PP
defines a group to which everyone belongs.
.PP
Network groups are accessed through the yellow pages.
The database actually used by the yellow pages are in these two files:
.IP
 /etc/yp/\fIdomainname\fP/netgroup.dir
 /etc/yp/\fIdomainname\fP/netgroup.pag
.PP
These files can be created from
.I /etc/netgroup
using
.IR makedbm (8).
.SH FILES
/etc/netgroup
.br
/etc/yp/\fIdomainname\fP/netgroup.dir
.br
/etc/yp/\fIdomainname\fP/netgroup.pag
.SH "SEE ALSO"
getnetgrent(3), exportfs(8), makedbm(8), ypserv(8)