Shell Programming and Scripting

I'm trying to improve a script that I have running on a Ubuntu desktop that basically runs a powerpoint presentaions with announcements to TV's in diffrent parts of our building. My current script uses WINE to execute powerpoint viewer.

The scripts that I currently use relies on inotifywait's ability to monitor a directory for changes and has the ability to execute a command when it notices a change.

Code:

#!/bin/bash

while inotifywait -e create /ticker/powerpointshare; do sleep 30; sudo chmod -R$
 sudo reboot; done

Code:

#!/bin/bash

ppts1=/ticker/powerpoint
newppt="ls -tr *.pp* | tail -1"

wineserver -k
wine "C:\\Program Files\\Microsoft Office\\Office12\\PPTVIEW.EXE " "C:\\powerpointshare\\'$newppt'"

As you can see I have the inotofywait script to reboot the machine when it notices a change and the other script starts the newest poworpoint presentation (ppt and pptx) at boot. Can you think of a way to make this one simple script also does inotifywait have a way to only watch of certain types of files instead of executing after any change?

You can make a list of sensitive files or directories in the target directory, sorted, say 'ls *.txt | sort -u >files_now' and compare it with the current state using 'comm -3 files_last files_now'. Sometimes you need to adjust locale to get a binary sort for comm: ( export LC_ALL=C ; sort ... )