arrays - 如何从 powershell 中的扩展类型数组中提取/匹配文件类型扩展

Question

我想使用 Powershell 从 Sharepoint 库中仅提取所需的文件类型

我正在使用以下逻辑，但它并没有 100% 正确工作。它仍然匹配文件名包含不好的扩展类型。

请帮我更正脚本。

$libfiles = ".pptx",".xlsx",".xls",".docx",".doc",".pdf",".jpeg",".jpg",".ppt",".xlsm",".gif",".png"
$libfilesregex = [string]::Join('|', $libfiles)
$arr = @("xlsfile.avi","asxlsxfile.mdf","navigation.css")
foreach($i in $arr)
{
    if($i -match $libfilesregex)
    {
        Write-Host " $($i) File type exists "
    }
    else
    {
        Write-Host " $($i) File type does not exist "
    }
}

正在输出:

xlsfile.avi File type does not exist

asxlsxfile.mdf File type exists

navigation.css File type does not exist

注意没有一个应该被报告为存在，但是 asxlsxfile.mdf 出乎意料的是。

谢谢 维斯瓦

Answer 1

我相信这就是您要找的。我明确地从文件数组中提取文件扩展名，如果扩展名存在则打印。

$libfiles = ".pptx",".xlsx",".xls",".docx",".doc",".pdf",".jpeg",".jpg",".ppt",".xlsm",".gif",".png"
$arr = @("xlsfile.avi","asxlsxfile.mdf","navigation.css", "lib.pptx")
foreach($i in $arr)
{
    if($libfiles -contains [io.path]::GetExtension($i))
    {
        Write-Host  "$([io.path]::GetExtension($i)) File type exists "
    }
    else
    {
        Write-Host "$([io.path]::GetExtension($i)) File type does not exist "
    }
}