https://github.com/getssh/simple_shell

https://github.com/getssh/simple_shell

Last synced: about 1 month ago
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• Host: GitHub
• URL: https://github.com/getssh/simple_shell
• Owner: getssh
• Created: 2021-08-19T19:10:54.000Z (almost 5 years ago)
• Default Branch: master
• Last Pushed: 2021-09-02T16:10:57.000Z (almost 5 years ago)
• Last Synced: 2025-02-21T19:44:02.781Z (over 1 year ago)
• Language: C
• Size: 38.1 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Authors: AUTHORS

Awesome Lists containing this project

README

          
HSH: The Holberton Shell

Simple shell is a ALX-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 and exetera

Genreral

    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”.

    

Features

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

    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

    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

Getayawqal Tamirat.

Wasihun Ageru.