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#!/usr/bin/perl -w
# https://lists.torproject.org/pipermail/tor-talk/2006-June/010486.html
use strict;
# Script to monitor the amount of FDs used by
# the Tor process (var/run/tor/tor.pid)
if ($ARGV[0] and $ARGV[0] =~ /^\s*config\s*$/i)
{
print "graph_title Open file descriptors for Tor\n";
print "graph_args --base 1000 -l 0\n";
print "graph_vlabel open FDs\n";
print "graph_category Tor\n";
print "count.label TorFDs\n";
exit 0;
}
my $pidfile = "/var/run/tor/tor.pid";
my $pid = '';
if (-e $pidfile) {
open (PID, $pidfile) or exit 1;
$pid = <PID>;
close PID;
} else {
$pid = `pidof tor`;
}
chomp $pid;
$pid =~ /^[0-9]+$/ or exit 1;
opendir (FDS, "/proc/$pid/fd") or exit 1;
my @fds = readdir(FDS);
closedir FDS;
my $count = scalar @fds - 2;
print "count.value $count\n";
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