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#!/usr/bin/perl -w
# (c) 2003 by Gerfried Fuchs <alfie@sil.at>, MIT license
#
# mrtg memory and swap usage check
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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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