Memory / swap usage

[Spider.007]

Normally the Linux memory script uses /proc/meminfo to display free memory. I think this sucks since the information might better be retrieved from the command "free". Therefore I've learned perl and wrote this:

Code: Select all

#!/usr/bin/perl

# Script by Spider.007 to display used memory (from `free`) instead of free memory (from meminfo)
# Change \$3 into \$4 to display free instead of used memory

if ($ARGV[0] eq "swap"){ $c = "tail"; }
if ($ARGV[0] eq "mem"){ $c = "head"; }

$mem = `free |tail -n 2 | $c -n 1| awk '{print \$3}'`;
$mem =~ s/(.*[0-9])//;

print $1;

To use it you have to update your datatemplates:

Linux - Memory - Free; change Grep String from MemFree: to mem
Linux - Memory - Free Swap; change Grep String from SwapFree: to swap

[yid]

Why do you think using free is better than reading the info from /proc? free just reads and parses the information in /proc the same way vmstat, top, and ps do.