in reply to Is it possible to generate unique temporary filenames using hostname/process id?

$$ and a microtime might be better, but still doesn't 100% ensure uniqueness.
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Re: Re: Is it possible to generate unique temporary filenames using hostname/process id?
by iguanodon (Priest) on Mar 14, 2004 at 01:29 UTC
    Ok, I know I run the risk of looking like a dumbass here but (assuming a Unix platform) what's wrong with $$ . time()? Is the risk that so many processes are created within one second that the PIDs roll over?
      Stick a long random number on the end and your odds are pretty good. Of course, there's no reason not to look for a name collision to guarantee it.