## Thursday, 4 April 2013

### Stopping a process with Powershell and the Out-GridView

Powershell can display a nice menu where the user can select e.g. a single or a multiple element in an arbitrary gridview, with the cmdlet Out-GridView. Let's see how this can be done to support stopping a single process of which the user chooses to stop. Of course, this is already available in Task Manager, but it is always nice to see that Powershell can give us a dedicated way of doing this also.

Here is the script for doing this, in the function Stop-SelectedProcess:


function Stop-SelectedProcess(){

Write-Host Select the process to stop ...
Start-Sleep 2

$selectedProcess =$null
Get-Process | Out-GridView -OutputMode Single -Outvariable selectedProcess

if ($selectedProcess -eq$null -or $selectedProcess.Count -eq 0) { return; } Stop-Process$selectedProcess

}

Stop-SelectedProcess
Make note how the Out-GridView cmdlet which we pipe the result from Get-Process to is specified to have an -OutputMode of single (i.e. choose one item at a time)and a -OutVariable also set, also note the missing \$-sign after -OutVariable, this is correct. This shows how we can present the user with a nice menu to choose for while running the command. This is easier than asking the user to select a process to stop by e.g. PID or #-line number.

This is just another example of how modern as a scripting language Powershell really is.

Word of caution at the end - never stop a process you are not sure of what runs. I stopped the process smss process the other day, because I thought it was Sql Management Studio. Needless to say, I experienced my first BSOD in Windows 8 ..

Screenshot of the action:

#### 1 comment:

1. Perhaps a better name could be Select-ProcessToStop ...