参数绑定

Question

我尝试创建一个PowerShell脚本，将一定年龄的XML文件移动到要存档的网络驱动器。到目前为止的脚本：

$qaprocessedpath = "Y:\SFTPSHARE\SFTPYMSQ\YS42C1Processed"
$qabackup = “\\servername\S$\xmlbackup\qa"

$max_age_qa = "-1"
$curr_date = Get-Date
$del_date_q = $curr_date.AddDays($max_age_qa)

Get-ChildItem -include *.xml $qaprocessedpath | Where-Object {$_.LastWriteTime -lt $del_date_q } | Foreach-Object {Copy-Item -Path $_.FullName -Destination $qabackup} {Remove-Item $_.FullName}

此代码导致以下错误：

    Copy-Item : Cannot bind argument to parameter 'Path' because it is null.
At Y:\SFTPSHARE\SFTPYMSP\XMLBackup.ps1:52 char:132
+ Get-ChildItem -include *.xml $qaprocessedpath | Where-Object { $_.LastWriteTime -lt $del_date_q } | Foreach-Object {Copy-Item -Path <<<<  $_.FullName -Destination $qabackup} {Remove-Item $_.FullName}
    + CategoryInfo          : InvalidData: (:) [Copy-Item], ParameterBindingValidationException
    + FullyQualifiedErrorId : ParameterArgumentValidationErrorNullNotAllowed,Microsoft.PowerShell.Commands.CopyItemCommand

不确定问题出在哪里。我是一个新手脚本，所以我确定它是明显的......

Answer 1

在这一行

Get-ChildItem -include *.xml $qaprocessedpath | Where-Object {$_.LastWriteTime -lt $del_date_q } | Foreach-Object {Copy-Item -Path $_.FullName -Destination $qabackup} {Remove-Item $_.FullName}

为什么Foreach-Object后面有两个脚本块？

如果您希望它们都运行，请尝试用分号（在同一个scriptblock中）分隔copy-item和remove-item。在您编写它时，两个脚本块将绑定到-Process参数（像往常一样）和-Begin参数。