PowerShell for Windows Admins

Jul 3 2011   5:06AM GMT

Computer Report: II Service Information

Richard Siddaway Richard Siddaway Profile: Richard Siddaway


The batch file retrieves service information using

wmic service where state=”Running” get DisplayName, Caption

Direct PowerShell translation is this.

Get-WmiObject -Class Win32_Service -Filter “State=’Running'” | Select DisplayName, Caption

Couple of problems:

  1. DisplayName and Caption tend to show the same output
  2. What about services that aren’t running? A major problem could be resolved if you realised a service that should be running has stopped.

Lets change the WMI to

Get-WmiObject -Class Win32_Service | sort State | Select State, Name, Caption

When we create our function we can add a switch to restrict output to just running services if required

function get-servicestate{             
param (             
Write-Verbose "Get Services"            
$services = Get-WmiObject -Class Win32_Service -ComputerName $computer            
if ($running){            
  $services | where{$_.State -eq "Running"} | Select Name, Caption            
else {            
  $services | sort State | Select State, Name, Caption            

By fetching all of the service information we allow ourselves the ability to easily modify the output if requirements change

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