add sys_info resource to get information about the hostname

lib/inspec/resource.rb

@@ -106,6 +106,7 @@ require 'resources/service'
 require 'resources/shadow'
 require 'resources/ssl'
 require 'resources/ssh_conf'
+require 'resources/sys_info'
 require 'resources/users'
 require 'resources/vbscript'
 require 'resources/windows_feature'

lib/resources/sys_info.rb

@@ -0,0 +1,26 @@
+# encoding: utf-8
+module Inspec::Resources
+  # this resource returns additional system informatio
+  class System < Inspec.resource(1)
+    name 'sys_info'
+
+    desc 'Use the user InSpec system resource to test for operating system properties.'
+    example "
+      describe sysinfo do
+        its('hostname') { should eq 'example.com' }
+      end
+    "
+
+    def hostname
+      os = inspec.os
+      if os.linux?
+        inspec.command('hostname').stdout.chomp
+      elsif os.windows?
+        # windows hostname
+        inspec.powershell('$env:computername').stdout.chomp
+      else
+        return skip_resource 'The `system` resource is not supported on your OS yet.'
+      end
+    end
+  end
+end