42_minishell

Description

This project consists of creating our own little bash. A program that can parse a command and execute it with arguments. Developed by @gpernas- and @karisti-.

Re-implemented features:

• Runs executables from an absolute, relative or environment PATH (/bin/ls or ls), including arguments or options. ' and " work the same as bash, except for multiline commands.
• Redirections > >> <.
• Pipes |.
• You can separate commands with ;.
• Environment variables like $HOME, including the return code $?.
• Handling signals: Ctrl-C to interrupt, Ctrl-\ to quit a program and Ctrl-D to throw an EOF.
• Some "built-in" functions: echo, pwd, cd, env, export, unset and exit.

Prerequisites

• Install readline brew install readline
• Get installed path brew info readline
• Set correct paths for RL_LIB and RL_INC in Makefile

Usage

• make for creating executable
• ./minishell for execution
• Run commands

Lessons

• Redirections
• Pipes
• Environment variables
• Signal handling
• Shell commands

Resources

• harm-smits minishell
• Writing Your Own Shell
• minishell flow image
• Shell Command Language
• Enseñarle a implementar un miniShell en lenguaje C
• How the shell works internally when entering a command
• Minishell explained
• Tester: minishell-tester
• Tester: minishell tests excel
• Tester: mini_tester
• Tester: minishell_tests