bash get ip

get-ip

#!/bin/bash
# bash get ip
declare -a api=("ifcfg.me" "ident.me" "tnx.nl/ip" "ip.appspot.com" "ifconfig.me" "curlmyip.com");
IP=$(curl -s --retry 3 --retry-delay 10 ${api[0]});
while [ -z "$IP" ] # If no IP
do
    sleep 0.5;
    random=$((  RANDOM % ${#api[@]}  ));
    IP=$(curl -s --retry 3 --retry-delay 10 ${api[$random]});
done
echo "IP: $IP"
echo "----- set hostname:"
echo "cat /proc/sys/kernel/hostname >> ~/.hostname_bak; sudo hostname $IP";