From: Siep Korteling <s.korteling@...>
Date: 2010-03-05T23:28:32+09:00
Subject: Re: System Stats from Ruby?

Nick Hird wrote:
> I am new to ruby but am working hard to learn all i can. Is there a
> way to get system information from ruby on windows? I am looking to
> get some data to make a system monitor type of thing. Data like conky
> or samurize have. Just not as crazy, just things like total memory and
> used memory, hard drive space and network usage, stuff like that.
> Thanks for the help!
> -Nick

For a windows-only solution I'd recommend ruby-wmi (gem install 
rdp-ruby-wmi if you are using ruby 1.9, don't know why ).

You can get to WMI via win32ole, like this:

require 'win32ole'

wmi_classes = %w(Win32_BIOS Win32_BootConfiguration Win32_ComputerSystem 
Win32_LogicalDisk)
computername = '.'
wmi = WIN32OLE.connect("winmgmts://#{computername}/root/cimv2")
wmi_classes.each do |wmi_class|
   puts wmi_class
   wmi_objects = wmi.ExecQuery("select * from #{wmi_class}")
   wmi_objects.each do |wmi_obj|
      wmi_obj.properties_.each do |prop|
      puts "#{prop.name}\t#{prop.value}" if prop.value
   end
  end
  puts "_"*60
end


ruby_wmi is cleaner, it handles the connection and the querying syntax.

require 'ruby-wmi'
c_drive = WMI::Win32_PerfRawData_PerfDisk_LogicalDisk.find :first,
    :conditions => {'Name' => 'C:'}
puts 'C percent free:', 
c_drive.PercentFreeSpace.to_f*100/c_drive.PercentFreeSpace_Base

hth,

Siep


Attachments:
http://www.ruby-forum.com/attachment/4539/wmi.rb

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