ip.sh

ip.sh

#!/bin/sh

ipvalid() {
	if expr "$1" : '[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*$' >/dev/null; then
		return 0
	fi
	return 1
}

# IP=$(ifconfig wlan0 | grep -m1 'inet addr:' | cut -d: -f2 | cut -d' ' -f1)
IP=$(ip route get 255.255.255.255 | awk '{print $NF;exit}')
if ipvalid "$IP"; then
	echo "l: $IP"
fi

# EXT_IP=$(nslookup myip.opendns.com resolver4.opendns.com | awk '/Address 1:/{i++}i==2{print $3;exit}')
# EXT_IP=$(dig @resolver4.opendns.com myip.opendns.com +short -4)
EXT_IP=$(echo -ne "GET / HTTP/1.1\r\nHost: whatismyip.akamai.com\r\nAccept: text/plain\r\nConnection: close\r\n\r\n" | nc -w1 whatismyip.akamai.com 80 | tail -1)
if ipvalid "$EXT_IP"; then
	echo "e: $EXT_IP"
fi