Don't like your AirPort being disconnected on Mac?

#!/bin/bash
# By Mark Hughes (www.markeh.me)
#
# See http://markeh.me/blog/dont-like-your-airport-being-disconnected-on-mac-i-have-the-solution/89
#

# First we want to see if we're connected to a network
NETWORK_TEST=`networksetup -getairportnetwork en1 | grep "not associated"`;

if [ "$NETWORK_TEST" = "" ]; then
    echo "AirPort is connected.";
    #echo "$NETWORK_TEST"; # Debugging purposes!

else
    echo "AirPort is not connected to a network, wait 10 seconds and try again.";
    sleep 10;

    # Re-run the test
    NETWORK_TEST=`networksetup -getairportnetwork en1 | grep "not associated"`;

    if [ "$NETWORK_TEST" = "" ]; then
        echo "AirPort is now connected.";
    else
        echo "AirPort is not connected to a network, restarting the airport power.";

        networksetup -setairportpower en1 off
        # Just wait for everything to calm down, 1 second could probably do it even.
        sleep 2
        networksetup -setairportpower en1 on

        echo "Waiting 5 seconds for the AirPort to find something.";
        sleep 5

        NETWORK_TEST=`networksetup -getairportnetwork en1 | grep "not associated"`;

        if [ "$NETWORK_TEST" = "" ]; then
            echo "AirPort has now found a network.";
            # Take further action? Log something? Do something? Anything?
        else
            echo "No network could be found.";
        fi
    fi
fi