Subversion Repositories camp_sysinfo_client_3

#!/usr/bin/env perl

use warnings;

use strict;  

# Description: Disk usage for Unix systems

our $VERSION = '1.2';

# Linux disks module for sysinfo client

# Author: R. W. Rodolico

# Date:   2016-04-08

# gets information on disks and partitions. Returns them as a hash

# uses standard df -kT and parses the output

# skips anything that does not have a device with /dev in it

# assumes the structure of the output is:

# device fstype size usedSpace availableSpace percentSpace mountPoint

# however, the output can sometimes wrap to multi lines, especially if the 

# device is long. So, we will replace all newlines with spaces, then 

# remove space duplications, then split on spaces and process each item in

# turn.

# NOTE: this will totally break if you have spaces in your mount point

# find our location and use it for searching for libraries

BEGIN {

   use FindBin;

   use File::Spec;

   use lib File::Spec->catdir($FindBin::Bin);

   eval( 'use library;' );

   die "Could not find library.pm in the code directory\n" if $@; # eval returned and error

   eval( 'use Data::Dumper;' );

}

# check for valid OS. 

exit 1 unless &checkOS( { 'linux' => undef, 'freebsd' => undef } );

# check for required commands, return 2 if they don't exist. Enter an full list of all commands required. If one doesn't exist

# script returns a 2

foreach my $command (  'df' ) {

   exit 2 unless &validCommandOnSystem( $command );

}

my $CATEGORY = 'diskinfo';

# process physical partitions

my $temp = qx/df -kT/; # execute the system command df, returned values in kilobytes, showing file system types

my @temp = split("\n", $temp ); # get array of lines

shift @temp; # get rid of the first line . . . it is nothing but header info

$temp = join( ' ', @temp ); # rejoin everything back with spaces

$temp =~ s/ +/ /gi; # remove all duplicate spaces

@temp = split( ' ', $temp ); # turn it back into an array of space separated values

while (@temp) {

   my $device = shift @temp; # get the device name

   my $output = '';

   $output .=  "$CATEGORY\t$device\tfstype\t" . (shift @temp) . "\n"; # next is fs type

   $output .=  "$CATEGORY\t$device\tsize\t" . (shift @temp) . "\n"; # total partition size, in k

   $output .=  "$CATEGORY\t$device\tused\t" . (shift @temp) . "\n"; # disk usage, in k

   shift @temp; # $available, not recorded

   shift @temp; # $percent, not recorded

   $output .=  "$CATEGORY\t$device\tmount\t" . (shift @temp) . "\n"; # mount point

   # now, if it is a /dev device, we add it to the diskInfo hash

   print $output if $device =~ m/\/dev/;

}