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59 lines
1.4 KiB
Bash
Executable File
59 lines
1.4 KiB
Bash
Executable File
#!/bin/sh
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# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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set -e
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usage() {
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echo "$0 [-g |-d] <ip address>"
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echo " -g output the gateway for this ip address"
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exit 1
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}
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gflag=
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while getopts 'g' OPTION
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do
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case $OPTION in
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g) gflag=1
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;;
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?) usage
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exit 1
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;;
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esac
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done
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if [ "$gflag" != "1" ]
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then
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usage
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fi
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shift $(($OPTIND - 1))
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ipaddr=$1
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[ -z "$ipaddr" ] && usage
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device=$(ip addr | grep $1 | head -1 | awk '{print $NF}')
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defaultdev=$(ip route | grep default | awk '{print $NF}')
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if [ "$device" == "$defaultdev" ]
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then
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gateway=$(ip route | grep default | awk '{print $3}')
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fi
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[ -n "$gflag" ] && echo $gateway && exit 0
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