Minishell - My own little shell

Project Description

The Minishell project aims to create a simple shell program. The shell should be capable of parsing and executing basic commands, handle redirections, pipes, and environment variables.

Features

1. Prompt: The shell should display a prompt when waiting for a new command.
2. History: The shell should maintain a history of commands.
3. Executable search: The shell should search and launch the right executable based on the PATH variable or using a relative or absolute path.
4. Quotes: The shell should handle both single (') and double (") quotes, preventing the interpretation of meta-characters inside the quotes.
5. Redirections: The shell should support input (<), output (>), here-document (<<), and append output redirection (>>).
6. Pipes: The shell should support pipes (|), connecting the output of each command in the pipeline to the input of the next.
7. Environment Variables: The shell should handle environment variables ($), expanding them to their values.
8. Exit Status: The shell should handle $?, expanding it to the exit status of the most recently executed foreground pipeline.
9. Interrupts: The shell should handle ctrl-C, ctrl-D and ctrl-\, behaving as bash does.
10. Builtins: The shell should implement the following builtins: echo with -n option, cd, pwd, export, unset, env, and exit.

Compilation

A Makefile is provided to compile the source files.

Limitations

• The shell should not use more than one global variable.
• It should not interpret unclosed quotes or special characters such as \ (backslash) or ; (semicolon) which are not required by the subject.

Usage

./minishell

Upon running, the shell will display a prompt and wait for the user to enter commands.