anchor.diff:  
   Welcome to your Vagrant-built virtual machine.
   Last login: Fri Sep 14 06:23:18 2012 from 10.0.2.2
  -vagrant@precise64:~$ tree
  +vagrant@precise64:~$ tree ~/main
   .
   |-- main
   |   |-- A
  
positive.code:  create mode 100755 YourStudentID-Lab02.sh
  ....
  
  In reviewing the directory structure, there are duplicate directories. Also, it is getting messy with three directories at the same level.
  
  Fix the directory creation logic so that
  
  1. There are no duplicate C and D directories (you will need to use another letter).
  2. All the directories are inside a single directory called "main".
  
  Run the updated script & confirm it works. You should see a tree output like:
  
  
negative.code: # To run, type ./YourID-Lab02.sh (you need the "./")
  # It must have permissions starting with a "7"
  
  mkdir -p ~/main/{A/{B,C,D},E/{F,G},H/{I,J/{K,L},M}}
  touch ~/main/{A/{aa,B/bb,C/cc,D/dd},E/{ee,F/ff,G/gg},H/{hh,I/ii,J/{jj,K/kk,L/ll},M/mm}}
  apt-get -y install tree
  apt-get -y install git
  ....
  