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#!/bin/sh
ipv4=0
ipv6=0
while [[ "$#" -gt 0 ]]; do
case $1 in
-4|--ipv4) ipv4=1 ;;
-6|--ipv6) ipv6=1 ;;
-b|--both) ipv4=1; ipv6=1 ;;
*) echo "Unknown parameter passed: $1" ;;
esac
shift
done
if [ $ipv4 -eq 1 ] && [ $ipv6 -eq 1 ]; then
ip a | grep inet | awk '{print $2}' | sed -e /^fe80::/d | awk -F/ '{print $1}' | sort -u
elif [ $ipv4 -eq 1 ] ; then
ip a | grep 'inet ' | awk '{print $2}' | awk -F/ '{print $1}' | sort -u
elif [ $ipv6 -eq 1 ] ; then
ip a | grep 'inet6 ' | awk '{print $2}' | sed -e /^fe80::/d | awk -F/ '{print $1}' | sort -u
else
echo "Usage:"
echo "-4|--ipv4 list only IPv4 addresses"
echo "-6|--ipv6 list only IPv6 addresses"
echo "--both list both IP4 and IPv6 addresses"
echo ""
exit 1
fi
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