https://github.com/nueluzoma/simple_shell

https://github.com/nueluzoma/simple_shell

Last synced: about 2 months ago
JSON representation

• Host: GitHub
• URL: https://github.com/nueluzoma/simple_shell
• Owner: NuelUzoma
• Created: 2022-11-15T17:19:28.000Z (about 2 years ago)
• Default Branch: master
• Last Pushed: 2022-11-17T06:24:03.000Z (about 2 years ago)
• Last Synced: 2023-06-04T13:01:19.426Z (over 1 year ago)
• Language: C
• Size: 38.1 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

Awesome Lists containing this project

README

        

                       _____ _   _ _____    ____    _  _____ _____ ____     ___  _____ 

                      |_   _| | | | ____|  / ___|  / \|_   _| ____/ ___|   / _ \|  ___|

                        | | | |_| |  _|   | |  _  / _ \ | | |  _| \___ \  | | | | |_   

                        | | |  _  | |___  | |_| |/ ___ \| | | |___ ___) | | |_| |  _|  

                        |_| |_| |_|_____|  \____/_/   \_\_| |_____|____/   \___/|_|    

                                       ____  _   _ _____ _     _     

                                      / ___|| | | | ____| |   | |    

                                      \___ \| |_| |  _| | |   | |    

                                       ___) |  _  | |___| |___| |___ 

                                      |____/|_| |_|_____|_____|_____|

                                                                      

HSH: The Holberton Shell

The gates of shell is a Holberton School project in the first trimester, helps student to understand the advanced concepts behind the shell program include process, system call, bit manipulation, file managment, error handling ...

General

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”?

Getting HSH

In order to install the shell and get benefits of it's features you need to clone the current project, and compile it. You need to make sure that this shell tested and garantees work based on gcc-4.8 and the C90 standard.

Features

Display a prompt and wait for the user to type a command. A command line always ends with a new line.

If an executable cannot be found, print an error message and display the prompt again.

Handle errors.

Handling the “end of file” condition (Ctrl+D)

Handling the command line with arguments

Handle the PATH

Support the exit features and the exit status

Handle the Ctrl-C to not terminate the shell

Handling the command seperator ;

Handling && and || logical operators

Handle variable replacements $? and $$

Handle the comments #

Support the history feature

Support the file input

Builtins

The exit builtin exit [STATUS]

The change directory cd [DIRECTORY] | [OPTION]

Display the environnment variables env

Initialize a new environnment variables or created if not match setenv [VARIABLE] [VALUE]

Remove an environnment variable unsetenv [VARIABLE]

Support the aliases alias [name [='value'] ...]

Display help help [BUILTIN]

Display history history

Authors

Madubuike Emmanuel Uzoma - Machine learning enthusiast & full stack developer 

Arinola Olawale Abdullateef - Software Engineer