Public/Test-IsInstalled.ps1
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function global:Test-IsInstalled { <# .EXTERNALHELP HelperFunctions.psm1-Help.xml #> [CmdletBinding()] [OutputType([System.Boolean])] param ( [Parameter(Mandatory = $true, Position = 0)] [ValidateNotNullOrEmpty()] [String]$Program ) begin { } process { $x86 = ((Get-ChildItem "HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall") | ` Where-Object { $_.GetValue("DisplayName") -like "*$program*" }).Length -gt 0; $x64 = ((Get-ChildItem "HKLM:\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall") | ` Where-Object { $_.GetValue("DisplayName") -like "*$program*" }).Length -gt 0; } end { return $x86 -or $x64; } } #End function Test-IsInstalled |