This script will expand variables inside a file and generate a new file with the same name, but without the ".sh" extension.

parse_shell_infile.sh

#!/bin/bash
# ##########################################################
# parse_shell_infile.sh
# This script will expand variables inside a file
# and generate a new file with the same name, but 
# without the ".sh" extension.
# Wesley Rodrigues da Silva <wesley.it at gmail.com>
# LICENCE CREATIVE COMMONS BY - 2014
# http://creativecommons.org/licenses/by/2.0/legalcode
# ##########################################################

IN="$1"
OUT="${IN/.sh/}"

echo "Criando o arquivo $OUT a partir do template $IN..."

CODE=$(eval "echo \"$(cat $IN)\"")
echo "$CODE" > $OUT