PowerShell: how to grep command output?

Question

In PowerShell I have tried:

alias | select-string Alias

This fails even though Alias is clearly in the output. I know this is beca

Answer 1

There are two problems. As in the question, select-string needs to operate on the output string, which can be had from "out-string". Also, select-string doesn't operate linewise on strings that are piped to it. Here is a generic solution

(alias|out-string) -split "`n" | select-string Write