powershell - 如何合并多个脚本并使用函数显示输出

Question

你们中的一些人(尤其是谢伊!)昨天帮助了我，我已经设法想出了多个脚本，现在正在将它们合并为一个。

问题是我已将它们全部放入“函数”中，并且一个函数依赖于对修补程序的成功检查 - 如果未安装修补程序，则脚本必须在那里停止，然后 - 这是第一次检查脚本确实如此。如何获取下一个函数调用hotfix函数的成功输出？

而且我不知道如何调用这些函数 - 即在底部我将函数的名称一个接一个地放在一行，但最终一遍又一遍地循环!

希望有人能帮忙。

Write-Host "=================================="
Write-Host "Pre-Staging Script for DFSR Server"
Write-Host "=================================="

Function Service
{
    Write-Host "=================================="
    Write-Host "Checking Service Installation"
    Write-Host "=================================="

    write-host "This will check if Hotfix KB979808 is installed." -ForegroundColor Black -BackgroundColor Cyan
    write-host "This is required for Windows Server 2008 R2 Robocopying"  -ForegroundColor Black -BackgroundColor Cyan
    Write-Host ""

    $hotfix1 = Get-HotFix -id KB979808 -ErrorAction SilentlyContinue

        If($hotfix1)
        {
            Write-Host "Hotfix is installed you may proceed" -foregroundcolor "green"
            Write-Host ""
        }
    else
        {
        Write-Host "Hotfix is NOT installed - Please ensure you install this hotfix BEFORE" -ForegroundColor "red"
        Write-host "Copying any data" -foregroundcolor "red"
        Write-Host ""
        }
}

Function Robocopy ($hotfix1)
 {
    Write-Host "============="
    Write-Host "Robocopy Data" 
    Write-Host "============="

    $Source = Read-Host "Please enter path of SOURCE"
    $Destination = Read-Host "Please enter path of TARGET"

    $Output = Read-Host "Please enter where to place output file eg c:\temp\COPY.log"

    robocopy $Source $Target /b /e /copyall /r:1 /xd dfsrprivate /log:$Output /tee
 }

Function Comparision
{
    Write-Host "==============================================="
    Write-Host "Checking Directory Count and Folder comparision" -ErrorAction SilentlyContinue -BackgroundColor Cyan -ForegroundColor Black
    Write-Host "==============================================="
    Write-Host ""

    $Source = Read-Host "Please enter Source directory to check"
    $Target = Read-Host "Please enter Target directory to check"
    Write-Host ""
    If($source -and (Test-Path -Path $source -PathType Container))
    {
        "There are $(@(Get-ChildItem $Source).Count) items in the '$Source' directory"  
    }
    Else
    {
        Write-Host "Please enter a directory"
        }
        If($source -and (Test-Path -Path $Target -PathType Container))
        {
            "There are $(@(Get-ChildItem $Target).Count) items in the '$Target' directory"  
    }
    Else
    {
        Write-Host "Please enter a directory"
    }

    Write-Host ""
    $child1 = Get-ChildItem -Path $Source -Recurse -Force
    $child2 = Get-ChildItem -Path $Target -Recurse -Force

    Compare-Object $child1 -DifferenceObject $child2 -Property Name

    Write-Host ""
    Write-Host "NOTE:" -BackgroundColor Cyan -ForegroundColor Black
    Write-Host "Any symbols with '=>' mean that the file Does NOT exist in SOURCE but is in the Target" -BackgroundColor Cyan -ForegroundColor Black
    Write-Host "Any symbols with '<=' mean that the file Does NOT exist in TARGET but is in the Source" -BackgroundColor Cyan -ForegroundColor Black
}

Answer 1

要使用在函数 Service 中找到的修补程序，您应该将该修补程序返回到变量。该函数如下所示:

Function Service
{
    Write-Host "=================================="
    Write-Host "Checking Service Installation"
    Write-Host "=================================="

    write-host "This will check if Hotfix KB979808 is installed." -ForegroundColor Black -BackgroundColor Cyan
    write-host "This is required for Windows Server 2008 R2 Robocopying"  -ForegroundColor Black -BackgroundColor Cyan
    Write-Host ""

    # This will return any output.
    Get-HotFix -id KB979808 -ErrorAction SilentlyContinue

}

那么函数调用将是:

$hotfix = Service
if($hotfix) {
    Robocopy
}
else {
    # This will exit the script.
    return
}

函数 Robocopy 不需要 $hotfix1 作为参数，因为它没有在函数中的任何地方使用。

Robocopy 函数可能正在循环，因为对 robocopy.exe 的调用与您的 Robocopy 函数相同；尝试将“.exe”添加到 robocopy.exe 调用中。命名函数以准确反射(reflect)其用途非常重要。 Service 可以是 Get-HotFixKB979808，Robocopy 可以是 Start-MyRobocopy

话虽如此，由于您的函数执行非常具体的操作，因此它们实际上不需要是自己的函数。您可以通过让它们接受参数来将它们更改为更可重用。