Powershell目录删除位置参数错误

Question

我一直在看这个脚本好几天了。 解决了大多数错误，但似乎无法捕获导致此错误的原因。 脚本是：

. $Env:JobDir\Scripts\DeleteMethods1.ps1
#Purge old logs
Remove-FilesCreatedBeforeDate -Path "$Env:JobDir\Logs\" -DateTime ((Get-   Date).AddDays(-30))
#Backup log from last run
if(Test-Path $Env:JobDir\log_*.txt)
{
    Move-Item -force $Env:JobDir\log_*.txt $Env:JobDir\Logs\
}
$logFile = $Env:JobDir + "\log_$(Get-Date -Format ""yyyyMMdd-HHmm"").txt"
echo "Removing files older than $Env:Days days" >> $logFile
if($Env:CheckType -eq "Created")
{
    # Remove all files created more than 30 days ago
    # Optionally use -DeletePathIfEmpty to remove empty directories
    Remove-FilesCreatedBeforeDate -Path $Env:PathToCleanUp -DateTime ((Get-   Date).AddDays($Env:Days)) -DeletePathIfEmpty "$Env:DeletePathIfEmpty" >> $logFile
}
if($Env:CheckType -eq "Modified")
{
    # Delete all files that have not been updated in 30 days
    Remove-FilesNotModifiedAfterDate -Path $Env:PathToCleanUp -DateTime ((Get- Date).AddDays($Env:Days)) "$Env:DeletePathIfEmpty" >> $logFile
}
if($Env:CheckType -eq "Accessed")
{
    # Delete all files that have not been accessed in 30 days
    Remove-FilesNotAccessedAfterDate -Path $Env:PathToCleanUp -DateTime ((Get-Date).AddDays($Env:Days)) "$Env:DeletePathIfEmpty" >> $logFile
}
echo "Done removing files older than $Env:Days days" >> $logFile
cat "$Env:JobDir\log.txt" >> $logFile

该脚本从以下文件中提取函数：

function Remove-EmptyDirectories([parameter(Mandatory=$true)][ValidateScript({Test-Path     $_})][string] $Path, [switch] $DeletePathIfEmpty, 
[DateTime] $OnlyDeleteDirectoriesCreatedBeforeDate = [DateTime]::MaxValue, 
[DateTime] $OnlyDeleteDirectoriesNotModifiedAfterDate = [DateTime]::MaxValue, 
[DateTime] $OnlyDeleteDirectoriesNotAccessedAfterDate = [DateTime]::MaxValue)
{
    Get-ChildItem -Path $Path -Recurse -Force -Directory | Where-Object { (Get-    ChildItem -Path $_.FullName -Recurse -Force -File) -eq $null } | 
    Where-Object { $_.CreationTime -lt $OnlyDeleteDirectoriesCreatedBeforeDate -and $_.LastWriteTime -lt $OnlyDeleteDirectoriesNotModifiedAfterDate
    -and $_.LastAccessedTime -lt $OnlyDeleteDirectoriesNotAccessedAfterDate } | 
    Remove-Item -Force -Recurse

# If we should delete the given path when it is empty, and it is a directory, and it is empty, and it meets the date requirements, then delete it.
if ($DeletePathIfEmpty -and (Test-Path -Path $Path -PathType Container) -and (Get-ChildItem -Path $Path -Force) -eq $null -and
    ((Get-Item $Path).CreationTime -lt $OnlyDeleteDirectoriesCreatedBeforeDate) -and 
    ((Get-Item $Path).LastWriteTime -lt $OnlyDeleteDirectoriesNotModifiedAfterDate) -and 
    ((Get-Item $Path).LastWriteTime -lt $OnlyDeleteDirectoriesNotAccessedAfterDate))
{ Remove-Item -Path $Path -Force }
}

# Function to remove all files in the given Path that were created before the given  date, as well as any empty directories that may be left behind.
function Remove-FilesCreatedBeforeDate([parameter(Mandatory)][ValidateScript({Test-Path  $_})][string] $Path,[parameter(Mandatory)][DateTime] $DateTime,[switch] $DeletePathIfEmpty)
{
    Get-ChildItem -Path $Path -Recurse -Force -File | Where-Object { $_.CreationTime -lt $DateTime } | Remove-Item -Force
    Remove-EmptyDirectories -Path $Path -DeletePathIfEmpty $DeletePathIfEmpty -OnlyDeleteDirectoriesCreatedBeforeDate $DateTime -OnlyDeleteDirectoriesNotModifiedAfterDate $DateTime -OnlyDeleteDirectoriesNotAccessedAfterDate $DateTime
}

# Function to remove all files in the given Path that have not been modified after the given date, as well as any empty directories that may be left behind.
function Remove-FilesNotModifiedAfterDate([parameter(Mandatory)][ValidateScript({Test-Path $_})][string] $Path, [parameter(Mandatory)][DateTime] $OnlyDeleteDirectoriesNotModifiedAfterDate, [switch] $DeletePathIfEmpty)
    {
        Get-ChildItem -Path $Path -Recurse -Force -File | Where-Object { $_.LastWriteTime -lt $OnlyDeleteDirectoriesNotModifiedAfterDate } | Remove-Item -Force
        Remove-EmptyDirectories -Path $Path -OnlyDeleteDirectoriesNotModifiedAfterDate $OnlyDeleteDirectoriesNotModifiedAfterDate -DeletePathIfEmpty $DeletePathIfEmpty
    } 
    # Function to remove all files in the given Path that were created before the given date, as well as any empty directories that may be left behind.
    function Remove-FilesNotAccessedAfterDate([parameter(Mandatory)][ValidateScript({Test-Path   $_})][string] $Path, [parameter(Mandatory)][DateTime]    $OnlyDeleteDirectoriesNotAccessedAfterDate, [switch] $DeletePathIfEmpty)
    {
         Get-ChildItem -Path $Path -Recurse -Force -File | Where-Object { $_.LastAccessTime -lt $OnlyDeleteDirectoriesNotAccessedAfterDate } | Remove-Item -Force
         Remove-EmptyDirectories -Path $Path -OnlyDeleteDirectoriesNotAccessedAfterDate     $OnlyDeleteDirectoriesNotAccessedAfterDate -DeletePathIfEmpty $DeletePathIfEmpty
    }

现在，此脚本的目标是爬网目录并删除旧项目。 这里的许多变量来自环境设定的项目。 现在，当我运行它时，我得到一个错误，指出：

Remove-FilesCreatedBeforeDate : A positional parameter cannot be found that
accepts argument ''.
+     Remove-FilesCreatedBeforeDate -Path $Env:PathToCleanUp -DateTime
((Get-Date) ...
    + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~
    + CategoryInfo          : InvalidArgument: (:) [Remove-FilesCreatedBeforeD
   ate], ParameterBindingException
    + FullyQualifiedErrorId : PositionalParameterNotFound,Remove-FilesCreatedB
   eforeDate

我认为我已经看了太久了，看不到错误，所以如果是简单的事情，请客气。 就建议而言，任何事情都是如此。 提前致谢！！！

*请注意，我不是编写脚本的人-一位同事让我承担纠错职责。

Answer 1

"$Env:DeletePathIfEmpty"一定是一个问题，因为那是您在那些语句中使用的唯一位置参数。 根据您调用该函数的其他地方，我猜测您需要更改此设置：

"$Env:DeletePathIfEmpty"

对此：

-DeletePathIfEmpty "$Env:DeletePathIfEmpty"

似乎需要对“已修改”和“已访问”检查类型都进行更改。

根据您的评论指出-DeletePathIfEmpty参数是[switch] ，看来您只需要调出-DeletePathIfEmpty开关或将函数修改为[bool]类型并将其传递给$true或$false 。