PowerShell 獲取大文件行數

function fn-GetLineCount ($FilePath)
{
$nlines = 0;
gc $FilePath -read 1000 | % { $nlines += $_.Length };
[string]::Format("{0} has {1} lines", $FilePath, $nlines)
}

 

使用例子：

fn-GetLineCount "C:\output.csv"