Powershell 4写入进度

Question

I'm trying to run an IP check from a loooong list of.. well, IPs.. with [System.Net.DNS] This works great, however I want to put a simple progress bar on it. Be it seconds or Percentage... Don't really care. I just want a nice progress bar to show up and tell me how long I need to wait.

$colComputers = get-content $File
foreach ($strComputer in $colComputers)
{
$IP = try {$dnsresult = [System.Net.DNS]::GetHostEntry($strComputer)} `
catch {$dnsresult = "Fail"}
$IP

for ($IP=100; $IP -gt 1; $IP--) {
  Write-Progress -Activity "Working..." `
   -SecondsRemaining $IP `
   -Status "Please wait."
}

Script runs great, just getting stuck on this progress bar. I was thinking it would be nice if at all possible to determine how many IPs the list contains and just let it count down from last to first.

Answer 1

I'm having trouble understanding your script.

• What is $IP = try { } ?
• You output $IP (which I though would always be null), why?.
• You never use $dnsresult ..
• I'm not even sure how that progressbar is going to help anyone.....
• You really need make your code more readable. Avoid "escaping linebreaks".

Is this what you were trying to do?

$colComputers = @(get-content $File)
$count = $colComputers.Count
$i = 1
foreach ($strComputer in $colComputers)
{

    #Write-Progress needs -percentagecomplete to make the progressbar move
    Write-Progress -Activity "Working... ($i/$count)" -PercentComplete ($i/$colComputers.Count*100) -Status "Please wait."

    #What is IP = try { } :S
    try {
        $dnsresult = [System.Net.DNS]::GetHostEntry($strComputer)
    }
    catch {
        $dnsresult = "Fail"
    }

    #Do something with $dnsresults...

    #Increase counter i
    $i++

}