Powershell文件扩展名匹配*

我需要将扩展名匹配到“。*”才能返回给定源文件夹中所有具有$ lwt的LastWriteTime的文件，如代码中所示。用户可以提供特定的扩展名，例如“.csv”，但没有提供，那么脚本将简单搜索所有文件。但是我无法将扩展名与“。*”匹配以返回所有文件。Powershell文件扩展名匹配*

[CmdletBinding()] 
param (
[Parameter(Mandatory=$true)][string]$source, 
[Parameter(Mandatory=$true)][string]$destination, 
[string]$exten=".*", 
[int]$olderthandays = 30 
) 
$lwt = (get-date).AddDays(-$olderthandays) 

if(!(Test-Path $source)){ 
    Write-Output "Source directory does not exist." 
    exit 
} 

if(!(Test-Path $destination)){ 
    Write-Output "Source directory does not exist." 
    exit 
} 

if($olderthandays -lt 0){ 
    Write-Output "You can't provide a negative number of days. If you want everything deleted simply provide 0 for number of days." 
    exit 
} 

if(!$exten.StartsWith(".")){ 
    $exten = "."+$exten 
    $exten 
} 


try{ 
    Get-ChildItem $source -ErrorAction Stop | ?{$_.LastWriteTime -lt $lwt -AND $_.Extension -eq $exten} | foreach { 
     Write-Output $_.FullName 
     # Move-item $_.FullName $destination -ErrorAction Stop 
    } 
} 
catch{ 
    Write-Output "Something went wrong while moving items. Aborted operation." 
}

这怎么能实现？

来源

2016-07-28 Junaid

“扩展名匹配'。*'”是什么意思？那么，比如，“/Users/foo/Documents/bar.*”的文件名就会匹配？或者别的，因为“。*”在正则表达式中非常有意义。 – RamenChef

我的意思是说任何扩展名就像.csv，.pdf或任何其他扩展名。 – Junaid

文件的Extension永远不会是.*。

你可以尝试：

$exten = "*.$exten" 
Get-ChildItem $source -ErrorAction Stop -Filter $exten | ?{$_.LastWriteTime -lt $lwt} | foreach { ... }

来源

2016-07-28 02:09:30 ESG

谢谢。这样可行。 – Junaid

往后走你的延伸过滤器进入子项，并使用。或*。

[CmdletBinding()] 
param 
(
    [Parameter(Mandatory=$true)][string]$source, 
    [Parameter(Mandatory=$true)][string]$destination, 
    [string]$exten="*.*", 
    [int]$olderthandays = 30 
) 
$lwt = (get-date).AddDays(-$olderthandays) 

if(!(Test-Path $source)){ 
    Write-Output "Source directory does not exist." 
    exit 
} 

if(!(Test-Path $destination)){ 
    Write-Output "Source directory does not exist." 
    exit 
} 

if($olderthandays -lt 0){ 
    Write-Output "You can't provide a negative number of days. If you want everything deleted simply provide 0 for number of days." 
    exit 
} 

if(!$exten.StartsWith('*.')){ 
    $exten = "*."+$exten 
    $exten 
} 


try{ 
    Get-ChildItem $source -Filter $exten -ErrorAction Stop | ?{$_.LastWriteTime -lt $lwt} | foreach { 
     Write-Output $_.FullName 
     # Move-item $_.FullName $destination -ErrorAction Stop 
    } 
} 
catch{ 
    Write-Output "Something went wrong while moving items. Aborted operation." 
}

来源

2016-07-28 02:18:39

Powershell文件扩展名匹配*

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