Restart Active Network Services on your Mac. You know, for the VPN!

restart-network-services

#! /usr/bin/env bash
# shellcheck disable=SC2059
set -euo pipefail

# Toggle all currently 'Active' network servcies (e.g., Wi-Fi, Ethernet
# connections, etc...) to "restart" them. We'll ignore any already 'Disabled'
# services, and toggle all of the others to 'Disabled' and then back to
# 'Enabled'. This has been found helpful when your VPN won't re-connect after
# undocking and re-docking your MacBook, for example.

RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[0;33m'
NO_COLOR='\033[0m'
CLEAR_LINE='\r\033[K'
IFS=$'\n'

get_service_status() {
  service=$1
  command=(networksetup -getnetworkserviceenabled "$service")

  "${command[@]}"
}

report_service_status() {
  service=$1
  service=$(echo "$service" | tr -d '*') # strip deactive indicator
  status=$(get_service_status "$service")
  status_sign=❔
  status_color=${YELLOW}

  case "$status" in
    "Enabled")
      status_sign=✅
      status_color="${GREEN}"
      ;;
    "Disabled")
      status_sign=⛔️
      status_color="${RED}"
      ;;
  esac

  printf "$status_sign $service is ${status_color}$status${NO_COLOR}\n"
}

set_service_status() {
  service=$1
  status=${2:-on} #default to on

  networksetup -setnetworkserviceenabled "$service" "$status"
}

printf "📶 Checking network connections:\n"
services=$(networksetup -listallnetworkservices | sed -E '/.*asterisk.*disabled.*/d')
restartable_services=$(echo "$services" | sed -E '/^\*.*/d') # ignore already disabled services

echo "$services" | while read -r service; do
  report_service_status "$service"
done

printf "\n🔧 Disabling services...\n"

echo "$restartable_services" | while read -r service; do
  set_service_status "$service" off
done

echo "$services" | while read -r service; do
  report_service_status "$service"
done

printf "\n🔧 Enabling services...\n"

echo "$restartable_services" | while read -r service; do
  set_service_status "$service" on
done

echo "$services" | while read -r service; do
  report_service_status "$service"
done

printf "\n📶 Network connections restarted. It could take a few moments for them to acquire IPs.\n"