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Re: How to read environment variable in Glibc code

On Tue, 10 Jan 2012 10:09:22 +0530
naveen yadav <yad.naveen@gmail.com> wrote:

>  Thanks a lot for your valuable input. I want to control printf from
> environment variable.
>  If I set Environment variable 1 it enable print to screen if i put
> Environment variable to 0 it disable to screen.
> 
> Actual I have already prebuild software, I want to control its o/p
> using glibc and Environment variable.
> 
> 
>  Thanks.
> 

And why exactly must this be done with an environment variable?
Whats wrong with 
1. myProgram > /dev/null
2. myProgram > myFile
3. myProgram

If you don't like to redirect the output, then I think you need to LD_PRELOAD a library which gives you the behaviour you need.

Cheers
Andreas
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