This C based Unix Shell launches a virtual shell which function exactly the same way as a linux terminal .It can handle the following operations: 1)All terminal commands
2)I/O redirection
3)piping
4)New commands like rmexcept <list_of_file_names> (removes all files not in the list in the current directory)
5)./a.out <kill_time> Executes till the specified time and stops.