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#!/usr/bin/perl -w
# (c) 2003 by Gerfried Fuchs <alfie@sil.at>, MIT license
#
# mrtg memory and swap usage check
use strict;
open(FOO, "/usr/bin/free -b|") || die "$0: can't fork free: $!";
my (undef, $mem, $mem2, $swap) = <FOO>;
close FOO;
chomp($mem, $mem2, $swap);
my ($memtot) = $mem =~ /^\S+\s+(\d+)\s+/;
my ($memuse) = $mem2 =~ /^\S+ \S+\s+(\d+)\s+/;
my ($swaptot, $swapuse) = $swap =~ /^\S+\s+(\d+)\s+(\d+)\s+/;
print "$memuse\n$swapuse\n".`/usr/bin/uptime`.`/bin/hostname`;
__END__
total used free shared buffers cached
Mem: 514336 489352 24984 0 87716 171732
-/+ buffers/cache: 229904 284432
Swap: 514040 64012 450028
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