implementing mkdir, chdir, mv, pwd inside a shell !

  1. The problem statement, all variables and given/known data:

need to implement mkdir, chdir, mv, pwd

given a shell.cpp directory.cpp and some other files

this shell missing these commands, and i need to implement them inside the shell

  1. Relevant commands, code, scripts, algorithms:

shell included in this file:
http://avida.cs.wright.edu/courses/CEG433/Projects/source-2008-Winter.tar.bz2

  1. The attempts at a solution (include all code and scripts):

the mkdir is not working from inside the shell. neither chdir , mv or pwd.

i successfuly implemented piping ,redirection, execution in the background in earlie assigment, but this assigment is not working out

  1. School (University) and Course Number:

CEG433/CEG633 - Operating Systems