# How do you setup logging to check 'No input file specified'

**URL:** <https://www.ruby-forum.com/t/how-do-you-setup-logging-to-check-no-input-file-specified/198518>\
**Category:** NGINX\
**Created:** [November 2, 2010, 10:53pm UTC](https://www.ruby-forum.com/t/how-do-you-setup-logging-to-check-no-input-file-specified/198518 "2010-11-02T22:53:06Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![okkezSS](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/o/85f322/32.png) [@okkezSS](https://www.ruby-forum.com/u/okkezSS)\
**Post date:** [November 2, 2010, 10:53pm UTC](https://www.ruby-forum.com/t/how-do-you-setup-logging-to-check-no-input-file-specified/198518/1 "2010-11-02T22:53:06Z")

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I keep getting a ‘No input file specified’ error and I want to know what  
information is passed by nginx to the fast cgi script.

How can I do that?

–  
Frank C.

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**Author:** ![vfcforums](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/v/85e7bf/32.png) [@vfcforums](https://www.ruby-forum.com/u/vfcforums)\
**Post date:** [November 3, 2010, 12:19am UTC](https://www.ruby-forum.com/t/how-do-you-setup-logging-to-check-no-input-file-specified/198518/2 "2010-11-03T00:19:44Z")

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Hello!

On Tue, Nov 02, 2010 at 09:51:36PM +0000, Frank C. wrote:

> I keep getting a ‘No input file specified’ error and I want to know what  
> information is passed by nginx to the fast cgi script.
> 
> How can I do that?

Debug log[1] shows all the information. Alternatively you may  
tcpdump what happens on wire between nginx and backend.

[1] [A debugging log](http://nginx.org/en/docs/debugging_log.html)

Maxim D.