WHY

如果非常在意几秒的差异，这样也许会比 get-Random 快那么一点。

$t=get-date
$chr = 'QWERTYUIOPASDFGHJKLZXCVBNMqwertyuiopasdfghjklzxcvbnm1234567890';
$swr = New-Object IO.StreamWriter('E:\1.Log', $false, [Text.Encoding]::ASCII);
$rnd = New-Object System.Random;
$arr = [Array]::CreateInstance('char', 7);

for ($i = 0; $i -lt 1000000; $i++) {
    $arr[0] = $chr[$rnd.Next(26)];
    for ($j = 1; $j -le 6; $j++) {
        $arr[$j] = $chr[$rnd.Next(62)];
    }
    $swr.WriteLine($arr);
}
$swr.Close();
((get-Date) - $t).TotalSeconds
复制代码

Microsoft Windows [版本 10.0.17763.379]
(c) 2018 Microsoft Corporation。保留所有权利。

C:\Users\WHY>PowerShell -exec ByPass "&'E:\Test\Test.PS1'"
1.8277292

C:\Users\WHY>