December 23, 2018

Understanding streams in PowerShell

In the past, we have spoken about how cmdlets output objects, and how output can be piped from one cmdlet to another. If you ever encountered errors or warnings or verbose output in the execution that involved outputting content to a file, these errors, warnings, verbose outputs… none of them is passed through the pipe into, say, the export cmdlet. Ever wondered why? Enter: Streams Output redirection Out-Host Read-Host The Information stream Redirecting output across streams Wrapping up I speak about the nature of output in PowerShell, in my book:

December 16, 2018

Piping Commands in PowerShell

We used the pipeline in our past posts. However, we did look into what they are and what they do. If you have had experience with Linux (or Bash in general), there is a good chance you know that the pipeline simply passes the output of a certain command to the command to its right. In this article, we discuss all about pipelines: Understanding the pipeline Using the pipeline to select properties Filtering the output based on a parameter How PowerShell outputs content Formatting the output Only in the end Wrapping up Understanding the pipeline Metaphorically speaking, think of a cmdlet as a machine.