wilson3centaurus / simple_shell

0x16. C - Simple Shell

📄 🚀

Description

This project is an implementation of the shell created as a Milestone Project for the C code at ALX Africa Software Engineering.
The gates of shell is a project in the first trimester, that helps student to understand the advanced concepts behind the shell program include process, system call, bit manipulation, file managment, error handling ...
Shell is a simple UNIX command interpreter that replicates functionalities of the simple shell (sh).
This program was written entirely in C Language.

COPYRIGHT

Copyright (C) 2022 by Reny Kipkoech and Stellah Mbao
All rights reserved

Description :

This is a shell written in C. It is based on the Thompson Shell.

Environment :

Our shell was built and tested on Ubuntu 14.04 LTS.

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.
• Hndling the “end of file” condition (Ctrl+D)
• Hanling 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

Our shell has support for the following built-in commands:

Command	Definition
exit [n]	Exit the shell, with an optional exit status, n.
env	Print the environment.
setenv [var][value]	Set an environment variable and value. If the variable exists, the value will be updated.
alias[name[='value]]	Reads aliases name
unsetenv [var]	Remove an environment variable.
cd [dir]	Change the directory.
help [built-in]	Read documentation for a built-in.

Installation : Getting HSH

Clone the below repository and compile the files into an executable using the GCC compiler.

https://github.com/StellahMbao/simple_shell.git

Basic usage 💡

• First, Fork this Repository Learn how to fork repo.
• Then Clone Learn how to clone .
• Create an executable by running the following command:
• gcc -Wall -Werror -Wextra -pedantic *.c -o hsh
• From there, type in the following command and press your enter button.
• ./hsh
• Final step: ENJOY!

Example 💻

ls -la

Contributors :

• Reny Kipkoech
• Stellah Mbao

Acknowledgments :

• The creators of the C language.
• Our software engineer-in-residence.
• Betty Holberton | Alx-Africa .