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@(#)netgroup.5 8.2 (Berkeley) 12/11/93
.Dd January 16, 1999 .Dt NETGROUP 5 .Os .Sh NAME .Nm netgroup .Nd defines network groups .Sh SYNOPSIS .Nm netgroup .Sh DESCRIPTION The .Nm netgroup file specifies .Dq netgroups , which are sets of .Sy (host, user, domain) tuples that are to be given similar network access.
p 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: d -literal -offset indent (host, user, domain) .Ed
p where the .Sy host , .Sy user , and .Sy domain are character string names for the corresponding component. Any of the comma separated fields may be empty to specify a .Dq wildcard value or may consist of the string .Dq Li - to specify .Dq no valid value . The members of the list may be separated by whitespace; the .Dq \e character may be used at the end of a line to specify line continuation. The functions specified in .Xr getnetgrent 3 should normally be used to access the .Nm netgroup database.
p If .Sq files is specified for the .Sq netgroup database in .Xr nsswitch.conf 5 , (or no .Sq netgroup entry is specified), then these functions operate on the .Xr db 3 version of the .Nm netgroup .Nm (netgroup.db) file which can be generated using .Xr netgroup_mkdb 8 . If .Sq nis is specified then the .Tn NIS maps .Sq netgroup , .Sq netgroup.byhost , and .Sq netgroup.byuser are used.
p Lines that begin with a # are treated as comments. .Sh FILES l -tag -width /etc/netgroup.db -compact t Pa /etc/netgroup.db the netgroup database. .El .Sh COMPATIBILITY The file format is compatible with that of various vendors, however it appears that not all vendors use an identical format. .Sh SEE ALSO .Xr getnetgrent 3 , .Xr exports 5 , .Xr nsswitch.conf 5 , .Xr netgroup_mkdb 8 .Sh BUGS The interpretation of access restrictions based on the member tuples of a netgroup is left up to the various network applications.