#!/usr/bin/env bash # - Test if given argument is a valid IPv6 Address # - is_valid_ipv6() { local _ipv6="$1" _regex_ipv6='^([0-9a-fA-F]{0,4}:){1,7}[0-9a-fA-F]{0,4}$' if [[ "$_ipv6" =~ ${_regex_ipv6} ]]; then return 0 else return 1 fi } if [ "X$@" = "X" ]; then echo -e "\n\t\033[33m\033[1mNo argumnet given!\033[m\n" exit 1 fi if is_valid_ipv6 $@ ; then echo -e "\n\t\033[32m\033[1m$@ is a valid IPv6 Address\033[m\n" else echo -e "\n\t\033[31m\033[1m$@ is NOT a valid IPv6 Address\033[m\n" fi exit