powershell重命名脚本

Get-ChildItem -Path . -Filter "*.mkv" | ForEach-Object {
    if ($_.Name -ne "rename") {
        \(fileName = \)_.Name -replace "\.[^.]+$", ""
		# ?表示非贪婪模式
        \(extension = \)_.Name -replace '^.+\.', ''
        # (\d+\.?\d*) 匹配数字，包括小数点
        # (\(.*?\))? 匹配括号内的内容
        $pattern = '\[(\d+\.?\d*)(\(.*?\))?\]'
        if (\(fileName -match \)pattern) {
            # \(s = [regex]::Match(\)fileName, '\[(.*?)\]').Value
            \(match = \)matches[1] # matches哈希表仅包含任何匹配模式的第一个匹配项
            # matches[1]即第一个()中的内容
            \(newName = "S01E" + \)match
            Rename-Item -LiteralPath \(_.Name -NewName "\)newName.$extension"
            Write-Output "\(newName.\)extension"
        }
        else {
            Write-Output "No match found"
        }
    }
}