$processName = "notepad"
$processStartFullPath = "c:\windows\system32\cmd.exe"
$processStartArguments = 'hej.txt'
$process = (Get-Process $processName -EA SilentlyContinue | Select ProcessName)

if ($process) {
    Write-Host -ForegroundColor Green "Arma 3 server is already running - no need to do anything"
} else {
    Write-Host -ForegroundColor red "Arma 3 server is not running"
    Write-Host "Starting Arma 3 server..."

    $ps = New-Object System.Diagnostics.Process
    $ps.StartInfo.FileName = $processStartFullPath
    $ps.StartInfo.Arguments = $processStartArguments
    #$ps.StartInfo.RedirectStandardOutput = $True
    $ps.StartInfo.UseShellExecute = $false
    $newProcess = $ps.Start()

    Write-Host -ForegroundColor Green "Process $processStartFullPath $processStartArguments was spawned"
}