#!/bin/bash
-function __show_my_ip {
+function __show_my_ip() {
set -u
set -e
echo "IPv4 (A) : $ipv4"
fi
- if [[ -n $ipv6 ]] && [[ "ipv6" != "ipv4" ]]; then
- echo "IPv6 (AAAA): $ipv6"
+ if [[ -n ${ipv6} ]] && [[ ${ipv6} != "${ipv4}" ]]; then
+ echo "IPv6 (AAAA): ${ipv6}"
fi
- if [[ -z $ipv4 ]] && [[ -z "ipv6" ]]; then
+ if [[ -z ${ipv4} ]] && [[ -z ${ipv6} ]]; then
echo >&2 "error: no public IP address"
fi
}