Powershell – Viewing the code from a Function


Ever get bitten by a bug and need to know “How was this done?”

In Powershell there are many functions you create, and just as many pre-written.   But when I go to see how a function was done (so I can learn more), I find if the function has more than one line you just get something like this.

CommandType Name Definition
——————                   ——- ———-
Function       get-exblog


Which doesn’t do you a lot of good.    

But really it’s not difficult to view.    For example if you want to get a list of all functions (which are like Cmdlets but you can view / edit and change them) run the following command


or you can also run a

GET-COMMAND –CommandType Function

…The output and results are the same, a BIG list of functions and their definitions or at least PARTIAL definitions.

So if you see a particular function you’re curious about in the list like say GET-EXBLOG (which is part of the Exchange Command Shell) just run this command



(GET-COMMAND GET-EXBLOG –CommandType Function).Definition

In both cases you will see the code that produces that Function which is

invoke-expression ‘cmd /c start http://go.microsoft.com/fwlink/?LinkId=35786′

Which goes off and launches the Exchange Blog.

So I never knew how to launch a Browser session from Powershell.  But now thanks to viewing this function I see a way.  Maybe not necessarily the BEST or the ONLY way but it’s a good way to learn if you can see how somebody else did it.  

Powershell – Learning *IS* easy 🙂

the Energized Tech

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