albertbori/Installation.md

## com.mine.toggleairport.plist
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
  <key>Label</key>
  <string>com.asb.toggleairport</string>
  <key>OnDemand</key>
  <true/>
  <key>ProgramArguments</key>
  <array>
    <string>/Library/Scripts/toggleAirport.sh</string>
  </array>
  <key>WatchPaths</key>
  <array>
    <string>/Library/Preferences/SystemConfiguration</string>
  </array>
</dict>
</plist>

## Installation.md

      
        
                
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              Installation.md
            
          
        
      
      
    Overview
This is a bash script that will automatically turn your wifi off if you connect your computer to an ethernet connection and turn wifi back on when you unplug your ethernet cable/adapter. If you decide to turn wifi on for whatever reason, it will remember that choice. This was improvised from this mac hint to work with Yosemite, and without hard-coding the adapter names. It's supposed to support growl, but I didn't check that part. I did, however, add OSX notification center support. Feel free to fork and fix any issues you encounter.
Most the credit for these changes go to Dave Holland.
Requirements

Mac OSX 10+
Administrator privileges

Installation Instructions

Copy toggleAirport.sh to /Library/Scripts/
Run chmod 755 /Library/Scripts/toggleAirport.sh
Copy com.mine.toggleairport.plist to /Library/LaunchAgents/
Run chmod 600 /Library/LaunchAgents/com.mine.toggleairport.plist
Run sudo launchctl load /Library/LaunchAgents/com.mine.toggleairport.plist to start the watcher

Uninstall Instructions

Run sudo launchctl unload /Library/LaunchAgents/com.mine.toggleairport.plist to stop the watcher
Delete /Library/Scripts/toggleAirport.sh
Delete /Library/LaunchAgents/com.mine.toggleairport.plist
Delete /private/var/tmp/prev_eth_on
Delete /private/var/tmp/prev_air_on

Misc
To debug, just run: sudo /Library/Scripts/toggleAirport.sh and add echo's wherever you'd like

  

  

## toggleAirport.sh
#!/bin/bash

function set_airport {

    new_status=$1

    if [ $new_status = "On" ]; then
        /usr/sbin/networksetup -setairportpower $air_name on
        touch /var/tmp/prev_air_on
    else
        /usr/sbin/networksetup -setairportpower $air_name off
        if [ -f "/var/tmp/prev_air_on" ]; then
            rm /var/tmp/prev_air_on
        fi
    fi

}

function growl {

    # Checks whether Growl is installed
    if [ -f "/usr/local/bin/growlnotify" ]; then
        /usr/local/bin/growlnotify -m "$1" -a "AirPort Utility.app"
    else
        osascript -e "display notification \"$1\" with title \"Wifi Toggle\" sound name \"Hero\""
    fi

}

# Set default values
prev_eth_status="Off"
prev_air_status="Off"
eth_status="Off"

# Grab the names of the adapters. We assume here that any ethernet connection name ends in "Ethernet"
eth_names=`networksetup -listnetworkserviceorder | sed -En 's|^\(Hardware Port: .*Ethernet, Device: (en.)\)$|\1|p'`
air_name=`networksetup -listnetworkserviceorder | sed -En 's/^\(Hardware Port: (Wi-Fi|AirPort), Device: (en.)\)$/\2/p'`

# Determine previous ethernet status
# If file prev_eth_on exists, ethernet was active last time we checked
if [ -f "/var/tmp/prev_eth_on" ]; then
    prev_eth_status="On"
fi

# Determine same for AirPort status
# File is prev_air_on
if [ -f "/var/tmp/prev_air_on" ]; then
    prev_air_status="On"
fi

# Check actual current ethernet status
for eth_name in ${eth_names}; do
    if ([ "$eth_name" != "" ] && [ "`ifconfig $eth_name | grep "status: active"`" != "" ]); then
        eth_status="On"
    fi
done

# And actual current AirPort status
air_status=`/usr/sbin/networksetup -getairportpower $air_name | awk '{ print $4 }'`

# If any change has occured. Run external script (if it exists)
if [ "$prev_air_status" != "$air_status" ] || [ "$prev_eth_status" != "$eth_status" ]; then
    if [ -f "./statusChanged.sh" ]; then
        "./statusChanged.sh" "$eth_status" "$air_status" &
    fi
fi

# Determine whether ethernet status changed
if [ "$prev_eth_status" != "$eth_status" ]; then

    if [ "$eth_status" = "On" ]; then
        set_airport "Off"
        growl "Wired network detected. Turning AirPort off."
    else
        set_airport "On"
        growl "No wired network detected. Turning AirPort on."
    fi

# If ethernet did not change
else

    # Check whether AirPort status changed
    # If so it was done manually by user
    if [ "$prev_air_status" != "$air_status" ]; then
    set_airport $air_status

    if [ "$air_status" = "On" ]; then
        growl "AirPort manually turned on."
    else
        growl "AirPort manually turned off."
    fi

    fi

fi

# Update ethernet status
if [ "$eth_status" == "On" ]; then
    touch /var/tmp/prev_eth_on
else
    if [ -f "/var/tmp/prev_eth_on" ]; then
        rm /var/tmp/prev_eth_on
    fi
fi

exit 0
	<?xml version="1.0" encoding="UTF-8"?>
	<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
	<plist version="1.0">
	<dict>
	<key>Label</key>
	<string>com.asb.toggleairport</string>
	<key>OnDemand</key>
	<true/>
	<key>ProgramArguments</key>
	<array>
	<string>/Library/Scripts/toggleAirport.sh</string>
	</array>
	<key>WatchPaths</key>
	<array>
	<string>/Library/Preferences/SystemConfiguration</string>
	</array>
	</dict>
	</plist>
	#!/bin/bash

	function set_airport {

	new_status=$1

	if [ $new_status = "On" ]; then
	/usr/sbin/networksetup -setairportpower $air_name on
	touch /var/tmp/prev_air_on
	else
	/usr/sbin/networksetup -setairportpower $air_name off
	if [ -f "/var/tmp/prev_air_on" ]; then
	rm /var/tmp/prev_air_on
	fi
	fi

	}

	function growl {

	# Checks whether Growl is installed
	if [ -f "/usr/local/bin/growlnotify" ]; then
	/usr/local/bin/growlnotify -m "$1" -a "AirPort Utility.app"
	else
	osascript -e "display notification \"$1\" with title \"Wifi Toggle\" sound name \"Hero\""
	fi

	}

	# Set default values
	prev_eth_status="Off"
	prev_air_status="Off"
	eth_status="Off"

	# Grab the names of the adapters. We assume here that any ethernet connection name ends in "Ethernet"
	eth_names=`networksetup -listnetworkserviceorder \| sed -En 's\|^\(Hardware Port: .*Ethernet, Device: (en.)\)$\|\1\|p'`
	air_name=`networksetup -listnetworkserviceorder \| sed -En 's/^\(Hardware Port: (Wi-Fi\|AirPort), Device: (en.)\)$/\2/p'`

	# Determine previous ethernet status
	# If file prev_eth_on exists, ethernet was active last time we checked
	if [ -f "/var/tmp/prev_eth_on" ]; then
	prev_eth_status="On"
	fi

	# Determine same for AirPort status
	# File is prev_air_on
	if [ -f "/var/tmp/prev_air_on" ]; then
	prev_air_status="On"
	fi

	# Check actual current ethernet status
	for eth_name in ${eth_names}; do
	if ([ "$eth_name" != "" ] && [ "`ifconfig $eth_name \| grep "status: active"`" != "" ]); then
	eth_status="On"
	fi
	done

	# And actual current AirPort status
	air_status=`/usr/sbin/networksetup -getairportpower $air_name \| awk '{ print $4 }'`

	# If any change has occured. Run external script (if it exists)
	if [ "$prev_air_status" != "$air_status" ] \|\| [ "$prev_eth_status" != "$eth_status" ]; then
	if [ -f "./statusChanged.sh" ]; then
	"./statusChanged.sh" "$eth_status" "$air_status" &
	fi
	fi

	# Determine whether ethernet status changed
	if [ "$prev_eth_status" != "$eth_status" ]; then

	if [ "$eth_status" = "On" ]; then
	set_airport "Off"
	growl "Wired network detected. Turning AirPort off."
	else
	set_airport "On"
	growl "No wired network detected. Turning AirPort on."
	fi

	# If ethernet did not change
	else

	# Check whether AirPort status changed
	# If so it was done manually by user
	if [ "$prev_air_status" != "$air_status" ]; then
	set_airport $air_status

	if [ "$air_status" = "On" ]; then
	growl "AirPort manually turned on."
	else
	growl "AirPort manually turned off."
	fi

	fi

	fi

	# Update ethernet status
	if [ "$eth_status" == "On" ]; then
	touch /var/tmp/prev_eth_on
	else
	if [ -f "/var/tmp/prev_eth_on" ]; then
	rm /var/tmp/prev_eth_on
	fi
	fi

	exit 0