print              21 user/forktest.c   print("fork test\n");
print              32 user/forktest.c     print("fork claimed to work N times!\n");
print              38 user/forktest.c       print("wait stopped early\n");
print              44 user/forktest.c     print("wait got too many\n");
print              48 user/forktest.c   print("fork test OK\n");