Shell Script Chainging MAC Address.

macaddrchanger.sh

#!/bin/bash
# ------------------------------------------------------------------
#          Change MAC Adress For MacOS
# ------------------------------------------------------------------

SUBJECT=macaddrchanger
VERSION=0.1.0
USAGE="Usage: [random|origin] -hv args"

# --- Option processing --------------------------------------------
while getopts ":vh" optname
  do
    case "$optname" in
      "v")
        echo "Version $VERSION"
        exit 0;
        ;;
      "h")
        echo $USAGE
        exit 0;
        ;;
      "?")
        echo "Unknown option $OPTARG"
        exit 0;
        ;;
      ":")
        echo "No argument value for option $OPTARG"
        exit 0;
        ;;
      *)
        echo "Unknown error while processing options"
        exit 0;
        ;;
    esac
  done

shift $(($OPTIND - 1))

cmd=$1
param=$2
command="command_$1"

# -----------------------------------------------------------------
LOCK_FILE=/tmp/${SUBJECT}.lock

if [ -f "$LOCK_FILE" ]; then
echo "Script is already running"
exit
fi

# -----------------------------------------------------------------
trap "rm -f $LOCK_FILE" EXIT
touch $LOCK_FILE

# -----------------------------------------------------------------
function command_random {
   echo Current: `ifconfig en0 ether | grep ether`
   SSID=`networksetup -getairportnetwork en0 | sed -E 's/Current Wi-Fi Network: //'`
   /System/Library/PrivateFrameworks/Apple80211.framework/Versions/A/Resources/airport --disassociate

   openssl rand -hex 6 | sed -E 's/(..)/\1:/g; s/./0/2; s/.$//' | xargs sudo ifconfig en0 ether

   networksetup -setairportnetwork en0 $SSID
   echo Changed: `ifconfig en0 ether | grep ether`
}

function command_origin {
   echo Current: `ifconfig en0 ether | grep ether`
   SSID=`networksetup -getairportnetwork en0 | sed -E 's/Current Wi-Fi Network: //'`
   /System/Library/PrivateFrameworks/Apple80211.framework/Versions/A/Resources/airport --disassociate

   networksetup -getmacaddress Wi-Fi | awk '{ print $3 }' | xargs sudo ifconfig en0 ether

   networksetup -setairportnetwork en0 $SSID
   echo Changed: `ifconfig en0 ether | grep ether`
}

# -----------------------------------------------------------------
# -----------------------------------------------------------------
if [ -n "$(type -t ${command})" ] && [ "$(type -t ${command})" = function ]; then
   ${command}
else
   echo "'${cmd}' is NOT a command";
fi