umbrella_dns_changer for osx

umbrella_dns_changer for osx

#!/bin/bash

# -----------------------------------------------------------
# Get installed OSX Network Devices and then list the ones with Active Internet Connections
# -----------------------------------------------------------
InstalledHardware=$(networksetup -listallhardwareports | grep Device | awk '{print $2}') 
ActiveInterfaces=$(ifconfig | pcregrep -M -o '^[^\t:]+(?=:([^\n]|\n\t)*status: active)')

# -----------------------------------------------------------
# Get list of active network devices
# -----------------------------------------------------------
common_live_network_devices=$(for installedDevice in ${InstalledHardware}
do
  for activeDevice in ${ActiveInterfaces}
    do
      if [ "${installedDevice}" = "${activeDevice}" ]
      then
        echo "${activeDevice}"
      fi
    done
done)

# -----------------------------------------------------------
# Find the common device names and set the setdnsservers to Umbrella
# Common like "Wi-Fi" and "Thunderbolt Ethernet Slot 1"
# -----------------------------------------------------------
for common_device in ${common_live_network_devices}
do
  internet_device=$(networksetup -listallhardwareports | grep -B 1 ${common_device} | grep "Hardware Port" | cut -c 16-)
  hello=$(echo networksetup -setdnsservers \"${internet_device}\" 208.67.222.222 208.67.220.220)
  eval $hello
done

used https://apple.stackexchange.com/questions/402913/convert-bash-script-to-a-compiled-standalone-binary-executable-not-text to make a binary like following:

shc -f umbrella_dns_primary_device.sh
mv umbrella_dns_primary_device.sh.x umbrella_dns_primary_device