flashercs

<#*,:&cls
@echo off
cd /d "%~dp0"
powershell -NoProfile -ExecutionPolicy RemoteSigned -Command ". ([ScriptBlock]::Create((Get-Content -LiteralPath \"%~0\" -ReadCount 0 | Out-String ))) "
pause
exit /b
#>
# 功能:文件查重,删除旧文件

$folder = "." # 指定文件夹
Get-ChildItem -LiteralPath $folder -Recurse | Where-Object { -not $_.PSIsContainer } | `
  Sort-Object -Property @{e = { $_.Name.ToLower() } }, @{e = { $_LastWriteTime }; d = $true } |`
  Group-Object -Property @{e = { $_.Name.ToLower() } } | ForEach-Object {
  $_.Group | Select-Object -Skip 1
} | Remove-Item -WhatIf
复制代码

先测试看看删除文件是否正确,然后再去掉参数 -WhatIf,就能真正删除文件了.