FSpy - Monitor your FileSystems . . .
This little aplication is able to easly monitor your web directories if something is changed inside.
On Ubuntu 9.10 you can install it with:
# sudo apt-get update && apt-get -y install fspy
Next, if you have your html root under /var/www, just run the command:
# sudo fspy -A -R8 /var/www/
And watch the output of changed files.
If you would like to send this report to a file do:
# sudo fspy -A -R8 /var/www/ > /var/log/fspy.txt
Hope it is useful to you has it is to me. :)