sms

#!/usr/bin/osascript
on run argv
  set nr to item 1 of argv
  set msg to item 2 of argv

  tell application "System Events"
    tell application "Messages" to activate
  end tell

  tell application "Messages"
    set Messages to get id of first service
    set receipant to buddy nr of service id Messages
    send msg to receipant
  end tell
end run