Can I send some text to the STDIN of an active process under Windows?
.NET framework's Process and ProcessStartInfo classes can be used to create and control a process. Since Windows PowerShell can be used to instantiate .NET objects, the ability to control almost every aspect of a process is available from within PowerShell.
Here's how you can send the dir command to a cmd.exe process (make sure to wrap this in a .ps1 file and then execute the script):
$psi = New-Object System.Diagnostics.ProcessStartInfo;$psi.FileName = "cmd.exe"; #process file$psi.UseShellExecute = $false; #start the process from it's own executable file$psi.RedirectStandardInput = $true; #enable the process to read from standard input$p = [System.Diagnostics.Process]::Start($psi);Start-Sleep -s 2 #wait 2 seconds so that the process can be up and running$p.StandardInput.WriteLine("dir"); #StandardInput property of the Process is a .NET StreamWriter object