Bash script to change all the php files with .html extension

php-to-html.sh

#!/bin/bash

# Usage: bash php-to-html.sh /path/to/folder
# If you get permission denied error do:
#        sudo bash php-to-html.sh /path/to/folder

for f in `find $1 -name '*.php'`
do
    #echo $f
    previous=$f
    updated=${f%.php}.html
    mv "$f" "${f%.php}.html"
    echo "FILE:      $previous"
    echo "RENAMED:   $updated"
done