file system watcher in bash/ksh

Hi all,
exist a filesystem watcher(like for example java) to check if exists
particular file in a directory? i would avoid a polling method.
Thanks in advance

Tuesday 1 July 2008 11:07, Patrick wrote:

Hi all,
exist a filesystem watcher(like for example java) to check if exists
particular file in a directory? i would avoid a polling method.

You can use fam. I don't know whether it can be used directly from shell;
however many scripting languages (php, perl for example) support it.

--
All the commands are tested with bash and GNU tools, so they may use
nonstandard features. I try to mention when something is nonstandard (if
I'm aware of that), but I may miss something. Corrections are welcome.