#!/bin/sh
# Script to "multiple file sed" (or, "msed").
# You give it the sed string and the files and it does the rest.
#
# I.e.: ./msed 's/old string/new string/g' *.html
#
# Global replace of 'old string' with 'new string' to all .html files.
#
#---
# multiple file sed
#
# Mark Allman (mallman@grc.nasa.gov)

if [ $# -lt 2 ]
then
    echo "usage: `basename $0` sed_string files"
    exit 1
fi

STRING=$1
shift
FILES=$@
TAROPTS="czf"

echo "Backing up old files..."
rm -f backup.tgz
tar $TAROPTS backup.tgz $FILES
echo "Done."
echo

echo "Applying Changes"
for I in $FILES
do
    echo " $I"
    sed -e "$STRING" $I > $$
    mv $$ $I
done
exit 0