list_local_ips.sh
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list_local_ips.sh
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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