Compile using the provided makefile 

The available flags for this program are: 
      -a:      Displays an entry for all files in the current directory
      -dn:     Goes n directories deep during recursion
      -c:      Displays a grand total
      -h:      Displays the output in a human readable way using prefixes like Byte, KB, MB...
      -f<%s>:  Tallies up only files that contain the substring s
      -v:      Displays a visual tree of the current directory
      -un:     Goes up n directories and then does what it needs to do
      
Some flags cannot be used together, such as -c and -u and -a and -f. 

Enjoy!