Re: variable COLUMNS desde C

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#11751

From: Adrian Rossiter
Date: Sun, 14 Oct 2001 15:12

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On Sun, 14 Oct 2001 10:49:19 +0100, David Ram�n Yanes Fari�a wrote:
>   david@elisa:~$ echo $COLUMNS 
>   80
...
>   david@elisa:~$ env | grep COLU
>   david@elisa:~$ 
>   
>   no me da nada...

COLUMNS es un variable de shell pero no est� en el environment. Con
bash puedes ver todos los variables con "declare".

>   La pregunta es obvia �Qu� se me escapa?
>   quiero obtener el n�mero de columnas de la terminal en la que se ejecuta
>   el programa,

-----------------------------
#include <stdio.h>
#include <sys/ioctl.h>

int main()
{
   struct winsize wsz;
   ioctl(0, TIOCGWINSZ, &wsz);
   printf("cols=%d\n", wsz.ws_col);
   return 0;
}
-----------------------------

Saludos

Adrian.
-- 
Adrian Rossiter
Email:     adrian_r@teleline.es
Web Site:  http://www.terra.es/personal/adrian_r

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From: adrianr@jazzfree.com (Adrian Rossiter)
Newsgroups: es.comp.os.linux.programacion
Subject: Re: variable COLUMNS desde C
Date: Sun, 14 Oct 2001 15:12:01 +0000
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