On 10/22/07, Karl Zilles < zilles@1969web.com> wrote:

Orlin Grigorov wrote:
> Oh, here's another idea---every certain amount of time, I just compare
> my last saved version of the file to the current one---if different,
> there's my event.   What do you think?

Just stat it.  You can stat it every second and never notice any
performance issue.  In fact you can stat a whole directory of files
every second and never notice.  It'll work cross platform, and it's easy:

let modtime file =
         let filedata = Unix.stat file in
         filedata.Unix.st_mtime

In a loop, compare the modtime to the previous modtime, then
Unix.sleep 1;