PowerShell - Check if the application is installed. If it is installed, write the name, vendor (publisher), version, and path to the file.

checkWare.ps1

$software = Read-Host -Prompt 'Enter an application name: ';
$uninstallInfo = gp HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\*
$applicationName = $uninstallInfo.DisplayName -Match $software

If ($applicationName) {
    $anchor = [regex]::Match($uninstallInfo.PSPath -Match $software,'.*\\(.*)').captures.groups[1].value
    $applicationInfo = gp HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\$anchor

    $vendor = $applicationInfo.Publisher
    $version = $applicationInfo.DisplayVersion
    $path = $applicationInfo.DisplayIcon

    Write-Host "$applicationName is installed. Writing more info in .\$software.txt"
    Out-File -File .\$software.txt -InputObject "'$applicationName' with verstion '$version' from '$vendor' is installed in '$path'"

} else {
	Write-Host "'$software' NOT installed.";
}