PowerShell 将文件大小显示为 KB、MB 或 GB [英] PowerShell display files size as KB, MB, or GB

问题描述

我有一个 PowerShell 脚本的一部分，用于获取指定目录的文件大小.

I have a section of a PowerShell script that gets the file size of a specified directory.

我能够将不同测量单位的值转换为变量，但我不知道显示适当值的好方法.

I am able to get the values for different units of measurement into variables, but I don't know a good way to display the appropriate one.

$DirSize = "{0:N2}" -f (($DirArray | Measure-Object -property length -sum).sum)
$DirSizeKB = "{0:N2}" -f (($DirArray | Measure-Object -property length -sum).sum / 1KB)
$DirSizeMB = "{0:N2}" -f (($DirArray | Measure-Object -property length -sum).sum / 1MB)
$DirSizeGB = "{0:N2}" -f (($DirArray | Measure-Object -property length -sum).sum / 1GB)

如果字节数至少为 1 KB，我希望显示 KB 值.如果 KB 的数量至少为 1MB，我希望显示 MB，依此类推.

If the number of bytes is at least 1 KB I want the KB value displayed. If the number of KBs is at least 1 MB I want MBs displayed and so on.

有什么好的方法可以做到这一点吗?

Is there a good way to accomplish this?

推荐答案

使用一个开关或一组if"语句.您的逻辑(伪代码)应如下所示:

Use a switch or a set of "if" statements. Your logic (pseudocode) should look like this:

1. 大小是否至少为 1GB?是的，以 GB 显示(否则...)
2. 大小是否至少为 1MB?是的，以 MB 为单位显示(否则...)
3. 以 KB 显示.

请注意，您应该按照从最大到最小的相反顺序进行测试.是的，我本可以为您编写代码，但我怀疑您知道足以将上述内容转换为工作脚本.正是这种方法让您难倒了.

Note that you should be testing in reverse order from the largest size to the smallest. Yes, I could have written the code for you, but I suspect you know enough to turn the above into a working script. It's just the approach that had you stumped.

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