Examples of Using WMI/CIM Cmdlets

WMI-CIM-CodeExamples.ps1

break #To prevent accidental execution of all commands
# WMI cmdlets: Work against anything, where DCOM RPC dynamic port range is available
# CIM cmdlets: Exist in PowerShell v3 and up, can use DCOM or WSMAN. Can have CimSessions. Microsoft going forward.
$Creds = Get-Credential
Get-WmiObject -Class win32_computersystem
Get-WmiObject -Class win32_computersystem -ComputerName server1 -Credential $Creds
Get-CimInstance -Class win32_computersystem -ComputerName server1 -Credential $Creds
$Session = New-CimSession -ComputerName server1 -Credential $Creds
Get-CimInstance -Class win32_computersystem -CimSession $Session
Get-CimSession
Get-CimSession | Remove-CimSession
Get-Cimsession
$Option = New-CimSessionOption -Protocol Wsman #Can use DCOM, though! Wsman, single port, is default
$Session = New-CimSession -Credential $Creds -ComputerName server1 #-SessionOption $Option
$OSInfo = Get-CimInstance -Class win32_operatingsystem -CimSession $Session
# Find property with full name of Windows OS
$OSInfo.Caption
$OSInfo | Select Caption
# Create a spreadsheet with win32_logicaldisk:
## Title of partition (ex. C: or D:) as 'Name' header/property, only local disks
## Server's name as 'PSComputerName' header/property
## Type of filesystem (ex. NTFS) as 'FileSystem' header/property
## Freespace left, in GB, as 'FreeSpace(GB)'
Get-CimInstance -CimSession $Session -Filter 'DriveType LIKE "3"' |
	select PSComputerName,
			FileSystem,
			@{Name='FreeSpace(GB)';Expression={$_.FreeSpace / 1GB -as 'int'}}, #Rounds float into int value
			@{Name='Name';Expression={$_.DeviceID}}
Get-CimSession | Remove-CimSession

Line 7 is incorrect, Get-CimInstance does not have a -Credential parameter.