Changes charset of files recursively

gistfile1.sh

#!/bin/bash

ICONVBIN='/usr/bin/iconv' # path to iconv binary

ORIGINAL_IFS=$IFS
IFS=$'\n'

if [ $# -lt 3 ]
then
    echo "$0 dir from_charset to_charset"
    exit
fi

find . -type f -print | while read f
do
    if test -f $f
    then
    	files=$(echo "$f" | egrep "((\.php)|(\.html?)|(\.txt)|(\.sql)|(\.mkf)|(\.xml)|(\.css)|(\.js))$")
    	if [ -n "$files"  ]
    	then
	        echo "Converting $files"
	        /bin/mv $f $f.old
	        $ICONVBIN -f $2 -t $3 $f.old > $f
	        rm -f $f.old
	    fi
    else
        echo "Skipping $f - not a regular file";
    fi
done

IFS=$ORIGINAL_IFS