Authors/Collaborators:
Nafula Evelyn Ouma: neouma29@gmail.com Ifiok Equere: equereifiok1@gmail.com
This project is about the $SHELL in its simplest form. It was designed to work mostly like the sh shell.
Our program at best produces the exact same output as sh (/bin/sh) as well as the exact same error output except for when we print an error in which case the name of our program must be equivalent to the first commandline argument (the executable shell program)
Objectives for this project were:
Who designed and implemented the original Unix operating system
Who wrote the first version of the UNIX shell
Who invented the B programming language (the direct predecessor to the C programming language)
Who is Ken Thompson
How does a shell work
What is a pid and a ppid
How to manipulate the environment of the current process
What is the difference between a function and a system call
How to create processes
What are the three prototypes of main
How does the shell use the PATH to find the programs
How to execute another program with the execve system call
How to suspend the execution of a process until one of its children terminates
What is EOF / “end-of-file”?
Projects requirements are also detailed below:
Allowed editors: vi, vim, emacs
All your files will be compiled on Ubuntu 20.04 LTS using gcc, using the options -Wall -Werror -Wextra -pedantic -std=gnu89
All your files should end with a new line
A README.md file, at the root of the folder of the project is mandatory
Your code should use the Betty style. It will be checked using betty-style.pl and betty-doc.pl
Your shell should not have any memory leaks
No more than 5 functions per file
All your header files should be include guarded
Use system calls only when you need to (why?)
Write a README with the description of your project
You should have an AUTHORS file at the root of your repository, listing all individuals who have contributed content to the repository