NAME
netgroup —
defines network groups
SYNOPSIS
netgroup |
DESCRIPTION
Thenetgroup 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 corresponding component. Any of the comma
separated fields may be empty to specify a “wildcard” value or
may consist of the string “-” to
specify “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 specify 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 generated 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.
FILES
- /etc/netgroup.db
- the netgroup database.
COMPATIBILITY
The file format is compatible with that of various vendors, however it appears that not all vendors use an identical format.
SEE ALSO
getnetgrent(3), exports(5), nsswitch.conf(5), netgroup_mkdb(8)
BUGS
The interpretation of access restrictions based on the member tuples of a netgroup is left up to the various network applications.