# Re: backtick commands and stderr

**URL:** <https://www.ruby-forum.com/t/re-backtick-commands-and-stderr/73787>\
**Category:** Ruby\
**Created:** [October 27, 2006, 1:37am UTC](https://www.ruby-forum.com/t/re-backtick-commands-and-stderr/73787 "2006-10-27T01:37:14Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![phrogz](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/2acd7d/32.png) [@phrogz](https://www.ruby-forum.com/u/phrogz)\
**Post date:** [October 27, 2006, 1:37am UTC](https://www.ruby-forum.com/t/re-backtick-commands-and-stderr/73787/1 "2006-10-27T01:37:14Z")

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From: Alexandru P. [[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)]

> On 10/27/06, Gavin K. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote:
> 
> > I believe you want to look at open3 or open4
> 
> Can you please add some more details?

open3 - [http://www.ruby-doc.org/stdlib/libdoc/open3/rdoc/index.html](http://www.ruby-doc.org/stdlib/libdoc/open3/rdoc/index.html)  
open4 - [http://codeforpeople.com/lib/ruby/open4/](http://codeforpeople.com/lib/ruby/open4/)

(Both are the first hits on Google for “ruby open3” and “ruby open4” 😉