01-06-2011
nslookup does not produce an error message on stderr or produce a return status when a host is not found. It just reports on stdout that a host could not be found.
You might want to try host instead if available, but host only works with a single name, not with a list of names...
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LEARN ABOUT XFREE86
innetgr
innetgr(1) NSS utilities innetgr(1)
NAME
innetgr - Check netgroup membership
SYNTAX
innetgr [-d domain] [-h host] [-u user] [-v] <netgroup>
DESCRIPTION
innetgr checks if the specified user, host or domain is a member of the given netgroup. The program does not produce any output unless the
verbose ( -v ) flag is given.
The exit status is 0 if the user/host/doman combination is a member of the given netgroup. Exit status is 1 if the combination is not
found in the group, and 2 if one of the arguments are invalid.
OPTIONS
--domain <domain> | -d <domain>
Search in the given domain.
--host <host name> | -h <host name>
Search for the given host name.
--user <user name> | -u <user name>
Search for the given user name.
--verbose | -v
Enable verbose mode
--version | -V
Show version information.
EXAMPLES
To check if the current host is listed in the netgroup allhosts, use this command line:
if innetgr -h `uname -n` allhosts ; then echo "Found"; fi
CONFORMING TO
A innetgr program first appeared in NetBSD 1.4.
AUTHORS
Petter Reinholdtsen <pere@hungry.com>
SEE ALSO
getent(1) netgroup(1) innetgr(3) netgroup(5) nsswitch.conf(5)
Petter Reinholdtsen 0.7 innetgr(1)