How to redirect the output of a PowerShell to a file during its execution

Question

I have a Powershell script for which I would like to redirect the output to a file. The problem is that I cannot change the way this script is called. So I cannot do:

 .\MyScript.ps1 > output.txt

How to redirect the output of a Powershell script during its execution?

Thanks!

Answer 1

One possible solution, if your situation allows it:

1. Rename MyScript.ps1 to TheRealMyScript.ps1

2. Create a new MyScript.ps1 that looks like:

   .\TheRealMyScript.ps1 > output.txt

Answer 2

Maybe Start-Transcript would work for you. First stop it if it's already running, then start it, and stop it when done.

Stop-Transcript | out-null
Start-Transcript -path C:\output.txt -append
# do some stuff
Stop-Transcript

You can also have this running while working on stuff and have it saving your command line sessions for later reference.

Answer 3

You might want to take a look at the cmdlet Tee-Object. You can pipe output to Tee and it will write to the pipeline and also to a file

Answer 4

There is an open Powershell Connections suggestion, "Script Logging needs to be improved", regarding this issue, that I would encourage everyone to vote on.