暂停Powershell脚本并继续

Question

I have a script which currently pulls the file location from a CSV and uploads the files to a database, using a ForEach-Object loop.

What I'd like it to do is upload 1000 files, then be able to pause the loop and resume it later from file 1001.

I don't want to use the Start-Sleep command, as I do not want the script to automatically resume after a set amount of time.

This is a one time deal, so I'd rather not convert it to a workflow.

What command or cmdlet can be used to accomplish this?

---

The Read-Host command would be perfect if there were a way to break the script and then resume from the same line later.

Answer 1

Use pause :

For ($i=1; $i -lt 2000; $i++)  {

    if ($i -eq 1001)
    {
         pause
    }
    Write-Host $i
}

Answer 2

Here's how I'd do it:

$i = 0;
foreach ($file in (Get-ChildItem $path_to_directory)) {
  # Code to upload the file referenced by $file
  if (++$i -eq 1000) {
    Write-Host -NoNewLine '1000 files have been uploaded. Press capital "C" to continue uploading the remaining files...'
    do {
    } until (($Host.UI.RawUI.ReadKey('NoEcho,IncludeKeyUp').Character) -ceq 'C')
  }
}

Using pause , as already suggested in Bluecakes' answer, is a perfectly good solution. The advantage of this method is that it gives you more control. pause always requires the Enter key and always gives you the same prompt, Press Enter to continue...: , whereas this way you can define both to your liking.

More significantly, and the reason I personally prefer to do it this way in my own scripts, is that you can protect against accidental key presses. In my example I made the required keystroke a capital C, so that it's very unlikely that you'd continue by accident.

However, if you don't care about any of that and just want a quick and simple say to do it, then pause is really all you need.

Answer 3

Something along these lines could work for you...

For ($i=1; $i -lt 50; $i++)  {

    if ($i -eq 10)
    {
        $input = Read-Host "Should I continue Y/N"
        if ($input -eq "N")
        {
           break
        }
    }
    Write-Host $i
}