PowerShell:如何按列对文本文件进行排序? [英] PowerShell: How do I sort a text file by column?

问题描述

我想在PowerShell中对文本文件进行排序.文本文件如下所示:

I want to sort a text file in PowerShell. The text file looks like this:

name1 4
name2 2.3
name3 6.7
name4 5.1

我想像这样输出该文件:

I want to output that file like this:

name3 6.7
name4 5.1
name1 4
name2 2.3

如您所见，它是按与名称相关的数字降序排列的.我该怎么做?

As you can see, it is ordered descending by the number associated to the name.How do I do that?

推荐答案

您可以按表达式排序，拆分每行(空格分隔符)，将最后一项转换为system.double并对其进行排序:

You can sort by an expression, split each line (space delimiter), cast the last item to system.double and sort on it:

Get-Content .\file.txt | Sort-Object { [double]$_.split()[-1] } -Descending

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