## Homework

Write a C program, ‹lndir.c› that takes 2 arguments, first of which
is an existing directory. The program will:

 1. create a directory given by the second argument. If it already
    exists (or is not a directory), bail (exit with a non-zero exit
    status),
 2. for each regular file in the directory given by the first
    argument, create a hardlink to this file in the newly created
    directory (under the same name as the original).
