Update progress in PowerShell

progress.ps1

$Num = 5

$Jobs = @()
ForEach ($Job in (1..$Num))
{   $Jobs += Start-Job -ScriptBlock { 
        $Count = 1
        Do {
            Write-Progress -Id 2 -Activity "Background Job" -Status $Count -PercentComplete 1
            $Count ++
            Start-Sleep -Seconds 4
        } Until ($Count -gt 5)
    }
}
$Total = $Num * 5

Write-Progress -Id 1 -Activity "Watching Background Jobs" -Status "Waiting for background jobs to started" -PercentComplete 0
Do {
    $TotProg = 0
    ForEach ($Job in $Jobs)
    {   Try {
            $Info = 
            $TotProg += ($Job | Get-Job).ChildJobs[0].Progress.StatusDescription[-1]
        }
        Catch {
            Start-Sleep -Seconds 3
            Continue
        }
    }
    If ($TotProg)
    {   Write-Progress -Id 1 -Activity "Watching Background Jobs" -Status "Waiting for background jobs to complete: $TotProg of $Total" -PercentComplete (($TotProg / $Total) * 100)
    }
    Start-Sleep -Seconds 3
} Until (($Jobs | Where State -eq "Running").Count -eq 0)

$Jobs | Remove-Job -Force

Write-Progress -Id 1 -Activity "Watching Background Jobs" -Status "Completed!  $Total of $Total" -PercentComplete 100
Start-Sleep -Seconds 1
Write-Progress -Id 1 -Activity "Watching Background Jobs" -Status "Completed!  $Total of $Total" -Completed

write-progress.ps1

for ($a=1; $a -lt 100; $a++) {
  Write-Progress -Activity "Working..." -Status "Please wait" -PercentComplete $a -CurrentOperation "$a% complete"
  Start-Sleep 1
}