Bash Search Replace Text in Files in a Directory, SVN stat the Files, and PHP Lint each modified file.

searchReplaceStatLint.sh

#!/bin/bash
if [[ $# -ne 3 ]];
then
    echo "USAGE: sh $0 {search_string} {replace_string} {dirname}"
    exit 1
else
    echo Searching for $1 and replacing with $2 in all files in directory $3 ...
    ack -Q -l "$1" $3 | xargs sed -i 's/'"$1"'/'"$2"'/g'
    echo checking 'SVN stat' of each modified file, and running a PHP lint on each...
    echo ----------------------------------------------------------------------------
    svn st $3 | awk '{print $2}' | xargs -L 1 php -l
    echo ----------------------------------------------------------------------------
fi
echo done.