Show all IP addresses and optionally copy to clipboard

ip

#!/bin/bash

ETH_IP=`ipconfig getifaddr en0 | tr -d "\n"`
WIFI_IP=`ipconfig getifaddr en1 | tr -d "\n"`
EXTERN_IP=`dig +short myip.opendns.com @resolver1.opendns.com`

echo "Local"
echo "  ethernet : $ETH_IP"
echo "  wifi:    : $WIFI_IP"
echo "Remote     : $EXTERN_IP"

while getopts erw opt; do
  case $opt in
    e)
      echo "$ETH_IP" | pbcopy
      echo "=> Copied ethernet IP to pasteboard."
      ;;
    w)
      echo "$WIFI_IP" | pbcopy
      echo "=> Copied wifi IP to pasteboard."
      ;;
    r)
      echo "$EXTERN_IP" | pbcopy
      echo "=> Copied remote IP to pasteboard."
      ;;
    \?)
      echo "Invalid option: only -e, -r, and -w are supported." >&2
      ;;
  esac
done