how to redirecting the standard output in program

phil123 · 02-22-2004, 09:51 PM

My program will do the pixel processing for output of other program.
So, I need redirect the output of the program from standard Output to my specified pipe
I do as this way in program:
...
dup2(fds[0],STDOUT_FILENO);
exelclp("runout","runout",NULL);
...
But it cannot work, I think execlp take place the my program, so dup2 cannot do its work in new process.

So, how to do?

if use the buffer, /dev/tty, how to do?

natalinasmpf · 02-22-2004, 11:12 PM

Just a suggestion, why don't you just write it to a file and have the pipe read it?

(also shouldn't this be in the programming forum

)

phil123 · 02-22-2004, 11:34 PM

Yes, sounds good, but the output is realtime. if write to file first, seems not good.so i wish redirect to output to my specified pipe.

SciYro · 02-23-2004, 12:02 AM

y not write to the file stdout and have another program lsiting on that for the imformation?