Creating directory hard links in Mac OS X [duplicate]

Answer 1

Unfortunately Apple has crippled the ln command. You can use the following program to create a hard link to a directory:

#include 
#include 

int main(int argc, char* argv[]) {
 if (argc != 3) {
  fprintf(stderr,"Use: hlink  \n");
  return 1;
 }
 int ret = link(argv[1],argv[2]);
 if (ret != 0)
  perror("link");
 return ret;
}

Take into account that the hard linked directories may not be in the same parent directory, so you can do this:

$ gcc hlink.c -o hlink
$ mkdir child1
$ mkdir parent
$ ./hlink child1 parent/clone2