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TFTP on Mac OS X 10.7 shell script

I've just started getting into Cisco support a little more. It's my goal to eventually specialise (its probably the first time I've found something in I.T. support that I don't eventually get bored with ). Since I've got about 1 of each OS I need make sure I can perform my job on anything. Was working on my macbook pro and needed to download some router configs. Give tftp a kick on Mac OS X 10.7 

#!/bin/bash
#* TFTP.sh
#+ A quick script to enable/disable tftp (for use with cisco devices).
#+ Usage: TFTP.sh on

NO_ARGS=0

if [ $# -eq "$NO_ARGS" ] # no arguments?
then
 /bin/echo "Disabling tftp."
 #+ Always unload, just to be on the safe side.
 sudo launchctl unload -w /System/Library/LaunchDaemons/tftp.plist
 #+ Cleanup any files so they aren't floating around ;)
 /bin/echo "Removing default tftp files."
 sudo /bin/rm -f /private/tftpboot/running-config
 sudo /bin/rm -f /private/tftpboot/startup-config
 sudo /bin/rm -f /private/tftpboot/flash
else
 if [ $1 == on ]; then
  /bin/echo "Enabling tftp."
  #+ Load the daemon
  sudo launchctl load -F /System/Library/LaunchDaemons/tftp.plist
  #+ Must be a file to send/receive one. Setup some Cisco defaults.
  /bin/echo "Creating default tftp files."
  sudo touch /private/tftpboot/running-config
  sudo chmod 777 /private/tftpboot/running-config
  sudo touch /private/tftpboot/startup-config
  sudo chmod 777 /private/tftpboot/startup-config
  sudo touch /private/tftpboot/flash
  sudo chmod 777 /private/tftpboot/flash
  pushd /private/tftpboot
  /bin/ls -la /private/tftpboot
 fi
fi

exit 0
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