st2               285 user/grind.c         int st1, st2;
st2               287 user/grind.c         wait(&st2);
st2               288 user/grind.c         if(st1 != 0 || st2 != 0 || strcmp(buf, "hi\n") != 0){
st2               289 user/grind.c           printf("grind: exec pipeline failed %d %d \"%s\"\n", st1, st2, buf);
st2               330 user/grind.c     int st2 = -1;
st2               331 user/grind.c     wait(&st2);