当变量使用powershell返回数据时，打印输出。

Question

每当变量$PrinterStatus返回任何数据时，我都试图打印这个变量，但正确的数据并不是来自于If else逻辑。

$CurrentTime = Get-Date
$PrinterStatus= 
Get-Printer -ComputerName "TGHYT-6578UT" | Foreach-Object { 
    $Printer = $_
    $Printer | Get-Printjob | 
        Where-Object {$_.jobstatus -ne "Normal"  -and $_.SubmittedTime -le $CurrentTime.AddHours(-1) } | 
        Select-Object @{name="Printer Name";expression={$_.printerName}}, 
        @{name="Submitted Time";expression={$_.SubmittedTime}}, 
        jobstatus, @{name="Port";expression={$Printer.PortName}}, 
        @{name="Document Name";expression={$_.documentname}},
        @{n='Difference in Hours';e={[math]::Truncate(($CurrentTime - $_.SubmittedTime).TotalHours)}} | 
        Sort-Object -Property jobstatus -Descending
            }

if([string]::IsNullOrEmpty($PrinterStatus))
     {
        Write-Output "Printers NOT Present" 
        $output = $PrinterStatus  > "C:\Output.txt"  #Shoud give blank txt file
     }

else {
        Write-Output "printers Present" 
        $output = $PrinterStatus  > "C:\Output.txt" 
     }

Answer 1

正如你的 $PrinterStatus 将是一个自定义打印作业对象的数组，你可以检查这个数组的长度。

$CurrentTime = Get-Date
$PrinterStatus = @()
$PrinterStatus = Get-Printer -ComputerName "TGHYT-6578UT" | Foreach-Object { 
        Get-Printjob $_ | 
            Where-Object {$_.jobstatus -ne "Normal"  -and $_.SubmittedTime -le $CurrentTime.AddHours(-1) } | 
            Select-Object @{name="Printer Name";expression={$_.printerName}}, @{name="Submitted Time";expression={$_.SubmittedTime}}, @{name="jobstatus";expression={$_.jobstatus}}, @{name="Port";expression={$Printer.PortName}}, @{name="Document Name";expression={$_.documentname}}, @{n='Difference in Hours';e={[math]::Truncate(($CurrentTime - $_.SubmittedTime).TotalHours)}} | 
            Sort-Object -Property jobstatus -Descending
    }

if ($PrinterStatus.Count -eq 0) {
    Write-Output "Printers NOT Present"
} else {
    Write-Output "Printers Present"
}
$PrinterStatus  > "C:\Output.txt"

我还清理了一下您的代码，修正了插入的 jobstatus 在您的自定义对象中。

Answer 2

打印机状态不会是一个字符串。我想你只是想对 $null.

if($null -eq $PrinterStatus) {
    Write-Output "Printers NOT Present" 
    # Not sure why this is necessary $output = $PrinterStatus  > "C:\Output.txt"  #Shoud give blank txt file
}

else {
    Write-Output "Printers Present" 
    $output = $PrinterStatus | Out-File -FilePath "C:\Output.txt"
}

我才注意到 你确实有你的 Get-Printer 命令在你的代码中的变量后面的同一行，不是吗？它不应该放在新的一行。

$PrinterStatus = Get-Printer -ComputerName "TGHYT-6578UT" | ...