onchange.sh

#!/bin/bash
#
# Watch current directory (recursively) for file changes, and execute
# a command when a file or directory is created, modified or deleted.
#
# Written by: Senko Rasic <senko.rasic@dobarkod.hr>
#
# Requires Linux, bash and inotifywait (from inotify-tools package).
#
# To avoid executing the command multiple times when a sequence of
# events happen, the script waits one second after the change - if
# more changes happen, the timeout is extended by a second again.
#
# Installation:
#     chmod a+rx onchange.sh
#     sudo cp onchange.sh /usr/local/bin
#
# Example use - rsync local changes to the remote server:
#    
#    onchange.sh rsync -avt . host:/remote/dir
#
# Released to Public Domain. Use it as you like.
#

EVENTS="CREATE,CLOSE_WRITE,DELETE,MODIFY,MOVED_FROM,MOVED_TO"

if [ -z "$1" ]; then
  echo "Usage: $0 cmd ..."
  exit -1;
fi

inotifywait -e "$EVENTS" -m -r --format '%:e %w%f' . | 
(while read LINE; do
	
  if  [[ $LINE =~ \.swp ]]; then
    continue;
  fi

  if [[ $LINE =~ CLOSE_WRITE ]]; then
    		FILENAME=${LINE#CLOSE_WRITE:CLOSE};
		if [ -f $FILENAME ]; then
	           $@ $FILENAME;
                fi
  fi;

done)