PowerShell输入文件格式

实际上，我想征求您对输入文件的最佳格式的建议

过去，我总是将CSV格式与导入CSV一起使用。但是，正如您在下面的示例中所看到的（删除所有早于x天的文件），破译所有行非常繁琐。大量代码几乎不可读，但工作正常：P

现在我被要求创建一个新的脚本（从一个文件夹复制到另一个文件夹），它需要一个输入文件来创建。例如，稍后您可能会决定向输入文件添加更多开关。或者将特定开关留空

你们怎么处理输入文件？或者，您通常以什么方式格式化输入文件，以便以后在脚本中轻松解密

一如既往，谢谢你的建议

示例输入文件：

# Input formats:
#
# [SERVER,]PATH[,OlderThanDays][ ,k]
# MailTo: [user1@domain.com] [user2@domain.com] [..]
#
# - PATH > Path to a file or folder that can be a UNC-path, local path on the script server or a local path on the remote server if you specify [SERVER, ]
# - [] > Fields between these brackets are optional
# - OlderThanDays > Nothing provided, a default of 30 days will be used
#                 > 0, zero means all files and folders will be deleted
# - k > If provided we don't do anything with folders, by default we will delete all empty folders regardless of their creation date
# - [SERVER] > Can be the name of the server or the name of the local host. Must have OS Windows Server 2008 R2 or Windows 7 at least, otherwise use UNC-path
# - MailTo:  > Contains the mail addresses of the people that want to receive a mail with the result
# - # can be used to comment out a line, this line will not be processed
#
# Notes:
# - User ScriptAdmin@domain.net needs write permissions to your path
# - For Windows Server 2003 and Windows XP we only support the UNC-path
# - Files are much faster deleted when using the server name and the local path, instead of the UNC-path
#
# Examples:
#
# SERVER1, C:\Appels.txt
# MailTo: Bob@domain.net Jake@domain.net Bobby@domain.net
# > The file 'Appels.txt' on the C-drive of SERVER1 will be removed when it's older than 30 days (default value).
# > A notification mail will be sent to Bob, Jake and Bobby afterwards with the results
#
# SERVER1, C:\Appels.txt, 0
# > The file 'Appels.txt' on the C-drive of SERVER1 will be removed every time the script runs, regardless of it's creation date.
#
# SERVER2, E:\SHARE\Target
# > All files older than 30 days will be deleted, all empty folders regardless of their creation date will be deleted to
#
# SERVER2, E:\SHARE\Target, 5
# > All files older than 5 days will be deleted, all empty folders regardless of their creation date will be deleted to
#
# SERVER2, E:\SHARE\Target, 15, k
# > All files older than 15 days will be deleted, we don't do anything with folders and leave them as is
#
# SERVER2, E:\SHARE\Target, 0
# > All files and folders will be deleted
#
# SERVER2, E:\SHARE\Target, 0, k
# > All files will be deleted, we don't do anything with folders and leave them as is
#
# \\domain.net\SHARE\Target
# > All files older than 30 days will be deleted, all empty folders regardless of their creation date will be deleted to
#
# E:\SHARE\Target, 10
# > All files older than 10 days will be deleted and all empty folders regardless of their creation date will be deleted to on the local host
# ______________________________________________________________________

$File = (Import-Csv -Path $ImportFile -Header "A", "B", "C", "D" | Where { $_.A -NotLike "#*" })
Foreach ($_ in $File) {

# Mail recipients
if ($_.A -like "MailTo:*") {
    $MailTo += $_.A -replace "^MailTo: " | foreach {$_.Split(" ")}
    Continue # to the next object, this line doesn't need further processing for '$arrayAllPaths'
}

# UNC path
elseif ($_.A -like "\\*") {
    $Server="UNC"
    $Target=$_.A
    if(!$_.B) { 
        # if B is empty
        $OlderThanDays=$DefaultOlderThanDays
        $CleanFolders=$true
    } 
    elseif ($_.B -eq "k") {
        $OlderThanDays=$DefaultOlderThanDays
        $CleanFolders=$false
    } 
    elseif ($_.B -eq "0") {
        if (!$_.C) {
            $OlderThanDays="0"
            $CleanFolders=$true
         } 
         elseif ($_.C -eq "k") {
                $OlderThanDays="0"
                $CleanFolders=$false
         }
    } 
    else {
        if($_.C -eq "k") {
           $CleanFolders=$false
           $OlderThanDays=$_.B
        } 
        else {
        $CleanFolders=$true
        $OlderThanDays=$_.B
        }
    }
}

# Local path
elseif ($_.A -like "[A-Z]:*") {    
    $Server="$env:COMPUTERNAME"
    $Target=$_.A
     if(!$_.B) { 
        # if B is empty
        $OlderThanDays=$DefaultOlderThanDays
        $CleanFolders=$true
    } 
    elseif ($_.B -eq "k") {
        $OlderThanDays=$DefaultOlderThanDays
        $CleanFolders=$false
    } 
    elseif ($_.B -eq "0") {
        if (!$_.C) {
            $OlderThanDays="0"
            $CleanFolders=$true
         } 
         elseif ($_.C -eq "k") {
                $OlderThanDays="0"
                $CleanFolders=$false
         }
    } 
    else {
        if($_.C -eq "k") {
           $CleanFolders=$false
           $OlderThanDays=$_.B
        } 
        else {
        $CleanFolders=$true
        $OlderThanDays=$_.B
        }
    }
}

# Local host with local path
elseif ($_.A -eq $env:COMPUTERNAME) {    
    $Server="$env:COMPUTERNAME"
    $Target=$_.B
      if(!$_.C) { 
        # if C is empty
        $OlderThanDays=$DefaultOlderThanDays
        $CleanFolders=$true
    } 
    elseif ($_.C -eq "k") {
        $OlderThanDays=$DefaultOlderThanDays
        $CleanFolders=$false
    } 
    elseif ($_.C -eq "0") {
        if (!$_.D) {
            $OlderThanDays="0"
            $CleanFolders=$true
         } 
         elseif ($_.D -eq "k") {
                $OlderThanDays="0"
                $CleanFolders=$false
         }
    } 
    else {
        if($_.D -eq "k") {
           $CleanFolders=$false
           $OlderThanDays=$_.C
        } 
        else {
        $CleanFolders=$true
        $OlderThanDays=$_.C
        }
    }        
}

# Remote servers with local path
else {
    $Server=$_.A
    $Target=$_.B
      if(!$_.C) { 
        # if C is empty
        $OlderThanDays=$DefaultOlderThanDays
        $CleanFolders=$true
    } 
    elseif ($_.C -eq "k") {
        $OlderThanDays=$DefaultOlderThanDays
        $CleanFolders=$false
    } 
    elseif ($_.C -eq "0") {
        if (!$_.D) {
            $OlderThanDays="0"
            $CleanFolders=$true
         } 
         elseif ($_.D -eq "k") {
                $OlderThanDays="0"
                $CleanFolders=$false
         }
    } 
    else {
        if($_.D -eq "k") {
           $CleanFolders=$false
           $OlderThanDays=$_.C
        } 
        else {
        $CleanFolders=$true
        $OlderThanDays=$_.C
        }
    }        
}

# All server names in upper case 
if ($Server) {
    $Server = $Server.ToUpper() 
}

# Target first letters uppercase the rest in lowercase
if ($Target -like "`\`\*" ) {
    $Target = $Target.Substring(0,2)+$Target.Substring(2,1).ToUpper()+$Target.Substring(3).ToLower()
} 
else {
      $Target = $Target.Substring(0,1).ToUpper()+$Target.Substring(1,2)+$Target.Substring(3,1).ToUpper()+$Target.Substring(4).ToLower()
}
}

脚本中的代码：

# Input formats:
#
# [SERVER,]PATH[,OlderThanDays][ ,k]
# MailTo: [user1@domain.com] [user2@domain.com] [..]
#
# - PATH > Path to a file or folder that can be a UNC-path, local path on the script server or a local path on the remote server if you specify [SERVER, ]
# - [] > Fields between these brackets are optional
# - OlderThanDays > Nothing provided, a default of 30 days will be used
#                 > 0, zero means all files and folders will be deleted
# - k > If provided we don't do anything with folders, by default we will delete all empty folders regardless of their creation date
# - [SERVER] > Can be the name of the server or the name of the local host. Must have OS Windows Server 2008 R2 or Windows 7 at least, otherwise use UNC-path
# - MailTo:  > Contains the mail addresses of the people that want to receive a mail with the result
# - # can be used to comment out a line, this line will not be processed
#
# Notes:
# - User ScriptAdmin@domain.net needs write permissions to your path
# - For Windows Server 2003 and Windows XP we only support the UNC-path
# - Files are much faster deleted when using the server name and the local path, instead of the UNC-path
#
# Examples:
#
# SERVER1, C:\Appels.txt
# MailTo: Bob@domain.net Jake@domain.net Bobby@domain.net
# > The file 'Appels.txt' on the C-drive of SERVER1 will be removed when it's older than 30 days (default value).
# > A notification mail will be sent to Bob, Jake and Bobby afterwards with the results
#
# SERVER1, C:\Appels.txt, 0
# > The file 'Appels.txt' on the C-drive of SERVER1 will be removed every time the script runs, regardless of it's creation date.
#
# SERVER2, E:\SHARE\Target
# > All files older than 30 days will be deleted, all empty folders regardless of their creation date will be deleted to
#
# SERVER2, E:\SHARE\Target, 5
# > All files older than 5 days will be deleted, all empty folders regardless of their creation date will be deleted to
#
# SERVER2, E:\SHARE\Target, 15, k
# > All files older than 15 days will be deleted, we don't do anything with folders and leave them as is
#
# SERVER2, E:\SHARE\Target, 0
# > All files and folders will be deleted
#
# SERVER2, E:\SHARE\Target, 0, k
# > All files will be deleted, we don't do anything with folders and leave them as is
#
# \\domain.net\SHARE\Target
# > All files older than 30 days will be deleted, all empty folders regardless of their creation date will be deleted to
#
# E:\SHARE\Target, 10
# > All files older than 10 days will be deleted and all empty folders regardless of their creation date will be deleted to on the local host
# ______________________________________________________________________

$File = (Import-Csv -Path $ImportFile -Header "A", "B", "C", "D" | Where { $_.A -NotLike "#*" })
Foreach ($_ in $File) {

# Mail recipients
if ($_.A -like "MailTo:*") {
    $MailTo += $_.A -replace "^MailTo: " | foreach {$_.Split(" ")}
    Continue # to the next object, this line doesn't need further processing for '$arrayAllPaths'
}

# UNC path
elseif ($_.A -like "\\*") {
    $Server="UNC"
    $Target=$_.A
    if(!$_.B) { 
        # if B is empty
        $OlderThanDays=$DefaultOlderThanDays
        $CleanFolders=$true
    } 
    elseif ($_.B -eq "k") {
        $OlderThanDays=$DefaultOlderThanDays
        $CleanFolders=$false
    } 
    elseif ($_.B -eq "0") {
        if (!$_.C) {
            $OlderThanDays="0"
            $CleanFolders=$true
         } 
         elseif ($_.C -eq "k") {
                $OlderThanDays="0"
                $CleanFolders=$false
         }
    } 
    else {
        if($_.C -eq "k") {
           $CleanFolders=$false
           $OlderThanDays=$_.B
        } 
        else {
        $CleanFolders=$true
        $OlderThanDays=$_.B
        }
    }
}

# Local path
elseif ($_.A -like "[A-Z]:*") {    
    $Server="$env:COMPUTERNAME"
    $Target=$_.A
     if(!$_.B) { 
        # if B is empty
        $OlderThanDays=$DefaultOlderThanDays
        $CleanFolders=$true
    } 
    elseif ($_.B -eq "k") {
        $OlderThanDays=$DefaultOlderThanDays
        $CleanFolders=$false
    } 
    elseif ($_.B -eq "0") {
        if (!$_.C) {
            $OlderThanDays="0"
            $CleanFolders=$true
         } 
         elseif ($_.C -eq "k") {
                $OlderThanDays="0"
                $CleanFolders=$false
         }
    } 
    else {
        if($_.C -eq "k") {
           $CleanFolders=$false
           $OlderThanDays=$_.B
        } 
        else {
        $CleanFolders=$true
        $OlderThanDays=$_.B
        }
    }
}

# Local host with local path
elseif ($_.A -eq $env:COMPUTERNAME) {    
    $Server="$env:COMPUTERNAME"
    $Target=$_.B
      if(!$_.C) { 
        # if C is empty
        $OlderThanDays=$DefaultOlderThanDays
        $CleanFolders=$true
    } 
    elseif ($_.C -eq "k") {
        $OlderThanDays=$DefaultOlderThanDays
        $CleanFolders=$false
    } 
    elseif ($_.C -eq "0") {
        if (!$_.D) {
            $OlderThanDays="0"
            $CleanFolders=$true
         } 
         elseif ($_.D -eq "k") {
                $OlderThanDays="0"
                $CleanFolders=$false
         }
    } 
    else {
        if($_.D -eq "k") {
           $CleanFolders=$false
           $OlderThanDays=$_.C
        } 
        else {
        $CleanFolders=$true
        $OlderThanDays=$_.C
        }
    }        
}

# Remote servers with local path
else {
    $Server=$_.A
    $Target=$_.B
      if(!$_.C) { 
        # if C is empty
        $OlderThanDays=$DefaultOlderThanDays
        $CleanFolders=$true
    } 
    elseif ($_.C -eq "k") {
        $OlderThanDays=$DefaultOlderThanDays
        $CleanFolders=$false
    } 
    elseif ($_.C -eq "0") {
        if (!$_.D) {
            $OlderThanDays="0"
            $CleanFolders=$true
         } 
         elseif ($_.D -eq "k") {
                $OlderThanDays="0"
                $CleanFolders=$false
         }
    } 
    else {
        if($_.D -eq "k") {
           $CleanFolders=$false
           $OlderThanDays=$_.C
        } 
        else {
        $CleanFolders=$true
        $OlderThanDays=$_.C
        }
    }        
}

# All server names in upper case 
if ($Server) {
    $Server = $Server.ToUpper() 
}

# Target first letters uppercase the rest in lowercase
if ($Target -like "`\`\*" ) {
    $Target = $Target.Substring(0,2)+$Target.Substring(2,1).ToUpper()+$Target.Substring(3).ToLower()
} 
else {
      $Target = $Target.Substring(0,1).ToUpper()+$Target.Substring(1,2)+$Target.Substring(3,1).ToUpper()+$Target.Substring(4).ToLower()
}
}

---

我认为您的错误是将处理输入文件与实际执行清理工作的代码结合起来。因此，我建议的第一件事是将执行实际工作的所有代码提取到cmdlet中（并将其放入Powershell模块文件中，以便在必要时导入）

通过编写cmdlet，您可以自动生成文档，为您完成参数的解析和验证，并且您可以集中精力确保代码满足您的需要，而不必担心输入文件格式之类的问题。您可以将上面给出的示例移动到cmdlet文档的

.examples

部分。cmdlet还可以支持类似于

-WhatIf

参数的功能，这样人们就可以在不实际删除的情况下测试要删除的内容

然后，您的输入文件可以是一个powershell脚本，该脚本使用适当的参数调用cmdlet：

Remove-UnwantedFiles -server SERVER1 -Path C:\Appels.txt -MailTo "Bob@domain.net","Jake@domain.net","Bobby@domain.net"
# The file 'Appels.txt' on the C-drive of SERVER1 will be removed when it's older than 30 days (default value).
# A notification mail will be sent to Bob, Jake and Bobby afterwards with the results

Remove-UnwantedFiles -server SERVER1 -Path C:\Appels.txt -MaxAge 0
# The file 'Appels.txt' on the C-drive of SERVER1 will be removed every time the script runs, regardless of it's creation date.
#

Remove-UnwantedFiles -server SERVER2 -Path E:\SHARE\Target
# > All files older than 30 days will be deleted, all empty folders regardless of their creation date will be deleted to

等等

---

或者您可以解析一些csv并使用它调用cmdlet，或者读取一些json或xml作为输入

谢谢你的反馈。我们需要使用非PowerShell文件，这样用户就可以轻松地将内容添加到输入文件中。所以我想解析CSV文件是唯一的选择。但你是对的，使用函数是很好的，我经常尝试这样做。但对于导入来说，它只是一个可重用的函数。。