PowerShell: How do I sort a text file by column?

Question

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

I want to output that file like this:

name3 6.7
name4 5.1
name1 4
name2 2.3

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

Answer 1

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

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

Answer 2

另一个变体：

gc c:\f1.txt | add-member scriptproperty sortby {$this.split()[-1]} {[double]$this} -pass | sort sortby -desc