#!/bin/bash
-function __show_my_ip {
+function __show_my_ip() {
set -u
set -e
ipv4=$(curl -s https://api.ipify.org || true)
ipv6=$(curl -s https://api6.ipify.org || true)
- if [[ -n "${ipv4}" ]]; then
+ if [[ -n ${ipv4} ]]; then
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
- >&2 echo "error: no public IP address"
+ if [[ -z ${ipv4} ]] && [[ -z ${ipv6} ]]; then
+ echo >&2 "error: no public IP address"
fi
}