Subj : Re: /dev/tty: all output, too?
To   : comp.os.linux,comp.os.linux.misc
From : st0ut
Date : Wed Aug 25 2004 12:10 pm

On Tue, 24 Aug 2004 19:55:57 -0700, Aarlo Stone Fish wrote:

> I am trying to write a program that reads all text output (and then does 
> something with it).  It seems that /dev/std{out,in,err} and /dev/tty only 
> release data input by the user to the terminal.  Is there any way for me to 
> capture all things like this:
>   char c;
>   c = 'h';
>   write(1, &c, sizeof(c));
> I fork() and have the parent process continue with its regular writing and the 
> child process read from something like "/dev/tty".
> 
> Thanks!
> Aarlo

Have you looked at awk / sed?



cat $file.txt| sed /what you want to change/what you want to change it
to


guy

.