#!/bin/sh
for word in "$@"; do 
 morse="$(echo $word | sed -e 's/\./dit /g' -e 's/_/dah /g')"
 for key in $morse; do
  if [ "$key" = "dit" ]; then
   echo 0x00 > /proc/sys/diag
   sleep 1
   echo 0x01 > /proc/sys/diag
   sleep 1
  elif [ "$key" = "dah" ]; then
   echo 0x00 > /proc/sys/diag
   sleep 3
   echo 0x01 > /proc/sys/diag
   sleep 1
  fi
 done
 sleep 3
done