Computer Report: II Service Information

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{             
[CmdletBinding()]             
param (             
   [string]$computer="localhost",            
   [switch]$running             
)             
BEGIN{}#begin             
PROCESS{            
            
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            
}            
            
}#process             
END{}#end            
            
}

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