分割日志成多个日志文件的的powershell

一个G的文件日志需要分析，日志工具直接挂了，用这个分割下就能解决问题

$inputFile = "kehuduan.log"
$outputPrefix = "b_part_"
$chunkSize = 300MB   # 自己改，比如 100MB / 500MB

$buffer = New-Object byte[] $chunkSize
$fs = [System.IO.File]::OpenRead($inputFile)

$fileIndex = 0

while (($bytesRead = $fs.Read($buffer, 0, $buffer.Length)) -gt 0) {
    $outFile = "{0}{1}.log" -f $outputPrefix, $fileIndex

    $outStream = [System.IO.File]::OpenWrite($outFile)
    $outStream.Write($buffer, 0, $bytesRead)
    $outStream.Close()

    $fileIndex++
}

$fs.Close()