Re: .

En fait il y a deux solution à ce problème:

#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include <stdlib.h>

main () {

int status, old_stdout, old_stderr, c;
int pipe_stdout[2], pipe_stderr[2];
char buffer[1024];

/* creation pipes de communication */
pipe(pipe_stdout);
pipe(pipe_stderr);

#if 1
if (fork()) {
close (pipe_stdout[0]);
close (pipe_stderr[0]);
/* redirect to pipe */
dup2(pipe_stdout[1], STDOUT_FILENO);
dup2(pipe_stderr[1], STDERR_FILENO);
execl("/bin/ls", "ls", "-la", "/bin", (char*)NULL);
}

wait(NULL);
#else
/* Backup old i/o */
dup2(STDOUT_FILENO, old_stdout);
dup2(STDERR_FILENO, old_stderr);

dup2(pipe_stdout[1], STDOUT_FILENO);
dup2(pipe_stderr[1], STDERR_FILENO);
system("/bin/ls -la --color /bin");

/* restore old i/o */
dup2 (old_stdout, STDOUT_FILENO);
dup2 (old_stderr, STDERR_FILENO);
#endif

/* close (pipe_stdout[1]);
close (pipe_stderr[1]);*/

memset(buffer, 0, 1024);
/* Lecture pipes */
printf("Lecture stdout:\n");
while (c=read(pipe_stdout[0], buffer, 1024)>0) {
printf("%s", buffer);
memset(buffer, 0, 1024);
}

memset(buffer, 0, 1024);
printf("Lecture stderr:\n");
while (c=read(pipe_stderr[0], buffer, 1024)>0) {
printf("%s", buffer);
memset(buffer, 0, 1024);
}
}