I run two services which produce log files on the scale of multigigabytes: Postgres and http://opennap.sourceforge.net/opennap. Taking huge zipped up tarballs of these logs and parsing them during off hours or when I come home from work gets tedious. I'd rather just have a perl daemon set up that actually read them as they were generated and stuffed em in a database in the format I want.

So the approach I came up with was using mkfifo(1) and this eensy-weensy loop: 

#!/usr/local/bin/perl

open FIFO, "<foo" or die "$!\n";
while (<FIFO>) {
  chomp;
  print "$_\n";
}

[download]
The problem is, this doesnt actually stay open and alive. It dies after the first "echo 'hello' > foo".

Is there a way I can make perl "listen" to a file and actually have it be parsing data and doing inserts on a db?

thanks,
brother dep.

--
Laziness, Impatience, Hubris, and Generosity.

In reply to Active Munging via a pipe (code) by deprecated

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