Expands the tabs on all files matching a find-command argument

expandtabs.sh

#!/bin/bash

# Author: Chris Ramakers <chris@inventis.be>

# Bash script to replace all tabs with spaces through the expand shell command
# For more info on expand run "man expand"
# Special thanks to bmk on Stackoverflow
# http://stackoverflow.com/questions/6677441/run-expand-on-find-results/6683317#6683317

# This script accepts 2 arguments
# - A path where you want to run `find` against
# - a filemask for `find` to filter the resulting files
#
# For example: 
# The command will recursively find all files with a .js extension in /var/www/html 
# and replace any tabs with spaces in those files
# ./expand.sh /var/www/html *.js

expand_func () {
    echo "Expanding $1"
    expand -t 4 "$1" > "$1.tmp"
    mv "$1.tmp" "$1"
}
export -f expand_func

if [ $# -lt 2 ]; then
    echo -e "USAGE: ./expand.sh /var/www/html *.php"
    echo -e "Warning: notice the space between the two arguments!\nThis is NOT a full path but are two separate arguments!"
else
    find $1 -name $2 -exec bash -c 'expand_func {}' \;
fi