37 lines
704 B
Plaintext
37 lines
704 B
Plaintext
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#!/usr/bin/env bash
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################################
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# Shows IP address of a given interface
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#
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# @param {String} interface: The network interface to check
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# @return {String(IP)}: IP address of the interface
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################################
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dir=$(dirname $0)
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source "$dir/util.sh"
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full=""
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short=""
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status=0
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interface=${BLOCK_INSTANCE:-eth0}
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netPath=/sys/class/net
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interfacePath=$(echo $netPath/$interface)
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# Expand wildcard interfaces
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interface=${interfacePath#$netPath/}
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state=$(cat $interfacePath/operstate)
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if [ $state == "up" ]; then
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ips=$(ip addr show $interface | perl -n -e'/inet (.+)\// && print $1')
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ip=${ips:-0.0.0.0}
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full=$ip
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short=$full
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fi
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echo "$full"
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echo "$short"
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exit $status
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