if/else 声明和复制项目问题

Question

这里是简单的脚本，至少我认为它应该是这样，但我对最终结果有疑问：

$a = Get-Content "content\file\location"
$destfile = "destination\of\file"
$source ="source\file\location"
$dest = "c$\destination"
$destfolder = "c:\folder\destination"

foreach ($a in $a) {
    if (Test-Connection $a -Count 1 -Quiet) {
        if (Test-Path "\$a$destfile") {
            Write-Host $a "File exists" -ForegroundColor Green
        } else {
            Write-Host $a "File is missing and will now be copied to $a$destfolder" -ForegroundColor Red |
                Copy-Item $source -Destination "\$a$dest"
        }
    }
}

问题是它从不复制文件，我哪里出错了？

提前感谢您的帮助。

Answer 1

除了打印到屏幕外，Write-Host 不会向管道发送任何内容，因此 Copy-Item 不会收到任何要复制的内容。

只需在 Write-Host 之后调用 Copy-Item 而不是在前者中传递后者：

$computerList = Get-Content "content\file\location"
$destfile = "destination\of\file"
$source ="source\file\location"
$dest = "c$\destination"
$destfolder = "c:\folder\destination"

foreach ($computerName in $computerList) {
    if (Test-Connection $computerName -Count 1 -Quiet) {
        if (Test-Path "\$computerName$destfile") {
            Write-Host $computerName "File exists" -ForegroundColor Green
        } else {
            Write-Host $computerName "File is missing and will now be copied to $computerName$destfolder" -ForegroundColor Red
            Copy-Item $source -Destination "\$computerName$dest"
        }
    }
}

另请查看格式和命名。

if/else 声明和复制项目问题

if/else statement and copy-item issue

powershell

copy-item

shortest-path

write-host