#include<unistd.h>
#include<fcntl.h>
#include<stdio.h>
#include<stdlib.h>
#include<errno.h>
int main()
{ int pid,p[2];
    if(-1==pipe(p))
    {printf("Eroare pipe");
        exit(1);
    }
    if(-1==(pid=fork()))
    {printf("Eroare la fork");
        exit(2);
    }
    if(pid==0)
    {dup2(p[1],1);
        execlp("grep","grep","/bin/bash","/etc/passwd",NULL);
        perror("Eroare la execlp");
        exit(3);
    }
    if(pid!=0)
    {
        close(p[1]);
        dup2(p[0],0);
        execlp("cut","cut","-d,","-f1",NULL);
        perror("Eroare la execlp");
        exit(5);
    }

    return 0;
}