PerformActionOnNewFilesOnly.sh

#!/bin/bash

##########################################################################################################################
# This is a template for a script that only runs when it's not already running. The first thing this will do is to check #
# to make sure that it is not running.                                                                                   #
#                                                                                                                        #
# Then this script will check to see if the latest file it has processed is its 'touched' file which is compares the MAC #
# times to ensure it only runs if there is work to be done.                                                              # 
#                                                                                                                        #
# The idea is that you should schedule this in a cron job. Here is my example of how I scheduled my script.              #
#                                                                                                                        #
# */5 * * * *  PerformActionOnNewFilesOnly.sh >> statuslog 2>> errorlog                                                  #
##########################################################################################################################

LOCKFILE="/directory/.moverscriptrunning"
if [ -e "${LOCKFILE}" ]; then
        echo "Script already running."
        exit 1
else


HEADSEP="================================================================================================================"
REGSEP="----------------------------------------------------------------------------------------------------------------"
NEWL=""

echo $HEADSEP
echo "PerformActionOnNewFilesOnly.sh is starting the rsync of somewhere to somewhere else."
echo `date`
echo $HEADSEP
touch "${LOCKFILE}"

# I use this for an rsync, then the follow up sections to change permissions or do whatever else is needed. Modify this
echo $NEWL
echo $REGSEP
echo "Starting copy"
rsync -rihPtz --ignore-existing user@server:directory localdirectory
echo "Finished"
echo $NEWL

# This is the file to check if there are any new files since this last processed. 
NEWFILECHECK="$(ls -t /directory/ | head -1 )"

if [ $NEWFILECHECK != "lastscanned" ]; then

        # Example of something you might want to do, modify this as needed. 
        echo $REGSEP
        echo "Starting chown-ing of directory"
        chown -R user:user directory/*
        echo "Finished"
        echo $NEWL

        echo $REGSEP
        echo "Starting chmod-ing of directory"
        chmod -R 770 directory/*
        echo "Finished"
        echo $NEWL
        # End of example
        
        # Add whatever processing needs to be done here. 
        
        
        
        
        # End whatever processing needs to be done here.
        touch /directory/lastscanned
else
        echo $REGSEP
        echo "No new files."

fi

echo "PerformActionOnNewFilesOnly.sh finished and exiting."
echo $HEADSEP
echo $NEWL
echo $NEWL

rm "${LOCKFILE}"

fi