How to capture binary stdout of a console exe run from Powershell?

Question

Is it possible to get Powershell to read the stdout of an exe into a byte[] instead of the usual text processed array of lines?

Best I've been able to do is this:

cmd /c foo.exe > foo.tmp
$b = [io.file]::readallbytes('foo.tmp')
del foo.tmp

Yucky, not to mention it is not streamable. Any better way to do this?

Keith Hill · Accepted Answer · 2010-12-23 03:33:11Z

5

Got some info from the PowerShell team. The short answer is that unfortunately, it is not easy. :-(

The medium length answer is: http://poshcode.org/2175.

The long answer is: Capture and Redirect Binary Process Output

edited Dec 23, 2010 at 3:33

answered Dec 19, 2010 at 17:55

Keith Hill

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3 Comments

scobi Over a year ago

Thanks for following up. I was hoping it wouldn't require the same yucky stuff I had to do in C#, but it's nice to have the code already available on poshcode. Also: you just made Lee Holmes a sale. I'm picking up the 2nd ed of that book. :)

Mark Henderson Over a year ago

Both of the links in this post are now dead :(

Keith Hill Over a year ago

Here's an updated link to the PowerShell Cookbook book - oreilly.com/library/view/powershell-cookbook-4th/9781098101596

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