Powershell sleep function, with progress bar.

Start-Sleep.ps1

function Start-Sleep($seconds) {
    $doneDT = (Get-Date).AddSeconds($seconds)
    while($doneDT -gt (Get-Date)) {
        $secondsLeft = $doneDT.Subtract((Get-Date)).TotalSeconds
        $percent = ($seconds - $secondsLeft) / $seconds * 100
        Write-Progress -Activity "Sleeping" -Status "Sleeping..." -SecondsRemaining $secondsLeft -PercentComplete $percent
        [System.Threading.Thread]::Sleep(500)
    }
    Write-Progress -Activity "Sleeping" -Status "Sleeping..." -SecondsRemaining 0 -Completed
}

Is there a way to fix the progress bar showing at 100% for a few seconds when the loop starts before correcting itself?

@jcefoli I just tested it and I'm not seeing that behavior. Are you using it in newer powershell core? I've only tested it in legacy powershell.

I tested this a bit and I see what is happening. It's not very apparent if the countdown is short, but I had a 1 hour countdown, and for a while, it was completely filled in, then after some time, jumped back down and started slowly incrementing.

In the Write-Progress commandlet, the -PercentComplete parameter will display the progress bar fully highlighted if its value is 0 or a decimal less than 1. Once it hits 1, it will calculate the filled in area properly.

I tricked it by doing this:

if ($percent -lt 1) {$progressBarPercent = 1 } else { $progressBarPercent = $percent }
 Write-Progress -Activity "Sleeping" -Status "Sleeping..." -SecondsRemaining $secondsLeft -PercentComplete $progressBarPercent 

Great stuff. Thanks.

awesome!! thanks!