1 #include "types.h" 2 #include "stat.h" 3 #include "user.h" 4 5 int 6 main(int argc, char *argv[]) /* */ 7 { 8 if(argc != 3){ 9 printf(2, "Usage: ln old new\n"); 10 exit(); 11 } 12 if(link(argv[1], argv[2]) < 0) 13 printf(2, "link %s %s: failed\n", argv[1], argv[2]); 14 exit(); 15 }