Flush WiFi route tables and restart WiFI interfaces - OSX

#!/bin/bash
# chmod +x flushwifi.sh
# run as root or sudo: ./flushwifi.sh
# AUTHOR: vvn <vvn [at] notworth.it>
# DESCRIPTION: bash script that briefly disables WiFi interfaces and clears the routing tables.


if (( $(id -u) )) ; then
    echo "this script needs to run as root or sudo"
    exit 1
fi

echo "refreshing wifi services.."

WIFINT=`ifconfig -l | grep -oh en[1-9]`

for i in $WIFINT
  do
    ifconfig $i down
    echo "interface $i temporarily disabled"
    sleep 2
    route -n flush
    echo "routes flushed"
    sleep 2
    ifconfig $i up
    sleep 1
  done

echo "Wi-Fi successfully restarted."

exit 0