#!/bin/bash

if [ -z $1 ]; then
echo Search for what?
exit
fi

if [ -z $2 ]; then
echo Replace with what?
exit
fi

for filex in *.c h/*.h
do
    ex - ${filex} <<EOF   
%s/$1/$2/g
wq!
EOF
done 
echo $1 replaced with $2 in source files.
exit

