#!/bin/sh

for f in *.c
  do
  mv $f $f.gaga
  sed s/$1/$2/g $f.gaga > $f
  rm $f.gaga
  done

for f in *.h
  do
  mv $f $f.gaga
  sed s/$1/$2/g $f.gaga > $f
  rm $f.gaga
  done
  