Powershell : How to find if a software is installed or not

Task is to write a Function in Powershell which can be used by multiple boxes to find if a software is installed or not.

SCRIPT

	Function Check-SoftwareInstalled {
	[CmdletBinding()]
	param(
	[Parameter(Mandatory=$true)]
	[string]$SoftwareName
	)
	$uninstallKey = 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall'
	$registry = Get-Item -Path $uninstallKey
	if (!$registry) {
	Write-Error "Error: Registry key $uninstallKey not found."
	return
	}
	$software = Get-ChildItem -Path $uninstallKey | ForEach-Object {
	Get-ItemProperty $_.PSPath
	} | Where-Object {
	$_.DisplayName -eq $SoftwareName
	}
	if ($software) {
	Write-Output "$SoftwareName is installed. Version: $($software.DisplayVersion)"
	} else {
	Write-Output "$SoftwareName is not installed."
	}
	}
	#Example : Check-SoftwareInstalled -SoftwareName "Local Administrator Password Solution"

view raw Check-SoftwareInstalled.ps1 hosted with ❤ by GitHub