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Directory polling?

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Directory polling? Software design forum discussing design principles and non-language specific algorithms. Get help with logic, algebraic, or relational concepts.

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  #1  
Old January 18th, 2002, 02:43 PM
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Question Directory polling?
I'd like to have a program (daemon, service)poll a folder and do some action on it's content.
How can I do this in java, php, python ... anything?
Thanks in advance for your help!
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Old January 18th, 2002, 11:08 PM
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The easiest way is probably to write script which does this, then run it on regular intervals using cron (if on unix). I don't know what you have to use on windows, but I'm sure a similiar tool is available.
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Old January 19th, 2002, 04:35 AM
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Well, there is plenty of such programs, but they are all commercial.
I need a service/daemon because it has to poll the directory "continuously", and I don't think that a cron that runs every 5 sec. would be right.
Do you know of any opensource project of this kind? Or a tutorial about building a service/daemon?
Regards.
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Old January 19th, 2002, 06:19 PM
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Quote:
Originally posted by pabloj
I need a service/daemon because it has to poll the directory "continuously"


So basically you want to "hook up" the OS functions manipulating with directory files (creating/modifying),etc. ?
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Old January 20th, 2002, 12:48 AM
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Well, I guess that's just a program which does something every 5 seconds and sleeps for the rest of the time... You could even use a simple PHP script for that, although it's probably better to write it in C to avoid wasting resources:
PHP Code:
while(true) {
  //Poll directories
  sleep(5);
} 
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Old January 20th, 2002, 02:49 AM
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Talking
Thanks for your help, I've even found another example in vb, but I'm gonna try with Python.
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