Powershell: Capture output from cmd at run time

Question

is it possible to capture the Output from a commandline while a cmd is running? I´ve a small exe, which displays various Messages that should be processed with a script and displays the user some informations while the script is running.

My script starts the program (the exe) with some Parameters und checks if the process is still running. While the program is running i want to capture all messages to a variable to process it. I can´t find any solution, some tests with "run.exe 2>&1" etc... fails.

Any ideas?

so in a powershell console $result = run.exe is not working for you? — Adil Hindistan
– Adil Hindistan, Commented Jun 5, 2014 at 14:19
Ive also tried (for example): $result = Start-Process "ping.exe" -ArgumentList "localhost" -Wait $result` — logi
– logi, Commented Jun 5, 2014 at 14:27
i´ve seen this script. but it captures the Output after the execution. I need the capture (each line) while it´s in progress. — logi
– logi, Commented Jun 5, 2014 at 14:39
no, with Tee-Object i can´t access the Output while the exe is running. — logi
– logi, Commented Jun 6, 2014 at 7:08

Antony · Accepted Answer · 2014-09-03 17:01:24Z

0

$oInfo = New-Object System.Diagnostics.ProcessStartInfo
$oInfo.FileName  = "ping"
$oInfo.Arguments = "localhost"
$oInfo.UseShellExecute = $False
$oInfo.RedirectStandardOutput = $True

$oProcess = New-Object System.Diagnostics.Process
$oProcess.StartInfo = $oInfo

[Void]$oProcess.Start()

$bDone = $False

while (!$bDone)
{
    $char = $oProcess.StandardOutput.Read()

    if ($char -eq -1)
    {
        if ($oProcess.HasExited)
        {
            $bDone = $True
        }
        else
        {
            Wait-Event 1
        }
    }
    else
    {
        Write-Host -NoNewline "".PadLeft(1, $char)
    }
}

answered Sep 3, 2014 at 17:01

Antony

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