Press hotkey to rerun script during a loop but don't wait for it

问题

Basically I have a script that runs and it Start-Sleep for 30 minutes then loops around again and re-runs. I was wondering if there was a way where you could click on the window, press a hotkey, and have it just refresh manually?

 while($true){
    $data = @("device1", "device2")

    ForEach ($server in $data) {

    ping $server

start-sleep 1800
clear
     }
    }

回答1:

I found through other methods that the below has allowed me to check the screen for any key press and break if there is one, but still be in a start-sleep status.

$timeout = New-TimeSpan -Minutes 30

$sw = [diagnostics.stopwatch]::StartNew()

while ($sw.elapsed -lt $timeout){

        if ($host.UI.RawUI.KeyAvailable) {

            $key = $host.UI.RawUI.ReadKey() 

            break 

            }

start-sleep -seconds 5          

     }

回答2:

My guess, your best bet is to implement a for loop inside your main while loop that does check for key press once every 5-15 seconds and if it detects that, it breaks itself, so your while loop can start over, here are a few links that seem to be relevant:

Waiting for user input with a timeout
https://blogs.msdn.microsoft.com/timid/2014/01/29/read-host-with-a-timeout-kind-of/
How to stop while($true) that contains start-sleep in powershell
Is there a way to catch ctrl-c and ask the user to confirm?

来源：https://stackoverflow.com/questions/42029709/press-hotkey-to-rerun-script-during-a-loop-but-dont-wait-for-it