minishell

Rewrite a simple shell in c

Subject: Minishell - 42

Members: 🌜 Ehafidi - Ymanzi 🌛

How to Use It

Using make will create the minishell executable.

Simply run it with :

./minishell

Instruction

• ' and " work the same as in bash
• Able to run commandes from an absolute, relative or environment PATH, including arguments or options.
• Commands can be separate with ;
• Handle redirections > >> < and pipes | as well
• Environment variables are handled like $HOME including return code $?
• Like in bash, you can use Ctrl-C to interrupt and Ctrl-\ to quit a program, as well as Ctrl-D to throw an EOF
• some "built-in" were recoded: echo, pwd, cd, env, export, unset and exit.

RESOURCES

SHELL Informations

• Bash
• Shell syntax
• Writing Your Own Shell
• Shell example
• Write a Shell in C
• Youtube - Program your own webserv in C
• Youtube - Socket Programming in C

Lexer

• How to write a (shell) lexer by hand
• lexical analyzer
• syntax analyzer

Parse Tree

• Generating a parse tree

Pipe - Fork - Execve - dup Functions

• Connecting n commands with pipes in a shell?
• Communication par tuyau
• how to correctly wait for execve to finish?
• Pipe, Fork, Exec
• Process creation and interprocess communication
• exec and pipe between child process in C
• dup2

Bash Redirection

• How bash redirection works
• All about redirections
• Redirection

Bash Pipe

• How Linux pipes work
• Pipe Demo

Exit

• Unix Exit Codes
• Exit Codes
• Exit Status for Commands