librenms-librenms/scripts/ifAlias

#!/bin/bash
# (c) 2013, 2014, f0o@devilcode.org
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# 
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
# 
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

BASE='.1.3.6.1.2.1.31.1.1.1.18'
ID=$(cut -d . -f 13 <<< $2)
cache=$(ip l)

if [ -z "$ID" ]; then
	ID=0
fi

if [ "$1" = "-n" ]; then
	IFS="
"
	for dev in $(grep mtu <<<"$cache" | cut -d : -f 1|sort -n); do
		if [ "$LAST" == "$ID" ]; then
			ID=$dev
			BRK=1
			break
		else
			LAST=$dev
		fi
	done
	if [ -z "$BRK" ]; then
		exit 0
	fi
fi

IFACE=$(grep "^${ID}: " <<<"$cache" | sed 's/[:@]\s/ /g'| cut -d " " -f 2)

echo ${BASE}.${ID}
if [ "X${IFACE}" = "X" ]; then
	echo noSuchName
else
	echo "string"
	if [ -x /usr/bin/distro ]; then
		case $(distro | cut -d " " -f 1) in
			Debian)
				cnf="/etc/network/interfaces"
			;;
			Gentoo)
				cnf="/etc/conf.d/net"
			;;
			CentOS|RedHat|SuSE|Mandriva|Mandrake)
				cnf="/etc/sysconfig/network-scripts/ifcfg-$IFACE"
			;;
			Archlinux)
				cnf="/etc/conf.d/net-conf-$IFACE"
			;;
			*)
				cnf=""
			;;
		esac
	fi
	if [ -n "$cnf" ]; then
		echo $(grep -i "^# $IFACE:" $cnf | sed "s/^# $IFACE: //i")
	else
		echo
	fi
fi
exit 0