content: -- Turn Do Not Disturb On
  do shell script "defaults -currentHost write ~/Library/Preferences/ByHost/com.apple.notificationcenterui doNotDisturb -boolean true"
  set theDate to quoted form of (do shell script "date -u +\"%Y-%m-%d %H:%M:%S +0000\"")
  do shell script "defaults -currentHost write ~/Library/Preferences/ByHost/com.apple.notificationcenterui doNotDisturbDate -date " & theDate
  do shell script "killall NotificationCenter"
  
  delay 1
  beep
  
  -- Turn DND Off
  do shell script "defaults -currentHost write ~/Library/Preferences/ByHost/com.apple.notificationcenterui doNotDisturb -boolean false"
  try
  	do shell script "defaults -currentHost delete ~/Library/Preferences/ByHost/com.apple.notificationcenterui doNotDisturbDate"
  end try
  do shell script "killall NotificationCenter"
  
  beep
  