OpenSolaris_b135/cmd/getmajor/getmajor.sh

#!/bin/sh
#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License (the "License").
# You may not use this file except in compliance with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
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# Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
# Use is subject to license terms.
#
#ident	"%Z%%M%	%I%	%E% SMI"

if [ $# -ne 1 ]
then
	echo "Usage: `basename $0` modname" >&2
	exit 2
fi

exec nawk -v a="$1" -v del='#' '$1 !~ /^#|^$/ && $1 == a { \
    num = split($2, maj, del); \
    if (num > 1) { print maj[1] } else { print $2 } \
    found = 1; exit 0 } \
    END {if (!found) exit 1}' < /etc/name_to_major