1) Write a program in C/C++ that will modify the ACL of files on Unix.
   Your program will accept one command line argument that will be a directory
   which you recursively browse looking for filesnames matching a pattern (like
   starting with A). For those files set the ACL to a fixed value having at least
   2 elements. Test your program on labak.fi.muni.cz Document your pattern and the ACL 
   you are setting.
   See "man 5 acl" for more details.