Hello,
I have another a problem while writing to child and then reading the result:
Code:
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
int main()
{
char buf[5];
int fd[2],
c;
pipe(fd);
if(fork() == 0)
{
dup2(fd[1], 1); //stdout -> pipe's write (everything what would go to stdout will go to the pipe's write...
execlp("sort", "sort", NULL);
}
write(fd[1], "c\n", 2);
write(fd[1], "a\n", 2);
write(fd[1], "b\n", 2);
while((c = read(fd[0], buf, 5)) > 0)
write(1, buf, c);
return 0;
}
In the child process I redirect stdout of the process to the pipe's write. So when I read in the parent's process I should have a sorted list but I receive not sorted and what is more, the program doesn't ends.
Regards,
apacz