Detect File System changes

[Noah]

In the UNIX world the common tool is FAM -- File Allocation Monitor.
This is a daemon that will report filesystem changes to clients.
There is a Python interface to libfam called "Python FAM" here:
    http://python-fam.sourceforge.net/
It looks mature, but I have never used it.

There are also some alternatives to FAM, but I don't remember the names
of them right now.

Yours,
Noah