#include <unistd.h>
#include <sys/types.h>
#include <stdlib.h>
int main()
{
int pfds[2];
char buf[30];
if(pipe(pfds)==-1)
{
perror("pipe failed");
exit(1);
}
if(!fork())
{
close(1);
dup(pfds[1];
system (“ls –l”);
}

else
{
printf("parent reading from pipe \n");
while(read(pfds[0],buf,80))
printf("%s \n" ,buf);
}
}