minishell is a custom shell implemented in C as part of our group project. It replicates many features of bash, providing an interactive command-line environment with robust error handling, built-in commands, redirections, pipes, and more.

• Interactive Prompt & History

  • Displays a prompt for new commands.
  • Maintains command history using readline functions.

• Command Execution

  • Searches for and launches executables based on the PATH variable, or via relative/absolute paths.
  • Supports proper interpretation of quotes (single and double) to control meta-character behavior.

• Redirections & Pipes

  • Implements input (<), output (>), append (>>), and here-document (<<) redirections.
  • Enables piping commands with the | operator.

• Environment Variable Expansion

  • Expands variables prefixed with $.
  • Handles $? to represent the exit status of the most recent foreground command.

• Built-in Commands

  • echo (with -n option)
  • cd
  • pwd
  • export
  • unset
  • env
  • exit

• Signal Handling

  • Handles ctrl-C, ctrl-D, and ctrl-\ in interactive mode similarly to bash.

• Bonus Features

  • Logical Operators: Support for && and || with parentheses for grouping and priority.
  • Wildcard Expansion: Implements wildcard * expansion for matching files in the current working directory.

Clone the repository and build the project using the provided Makefile:

git clone https://github.com/toagne/minishell
cd minishell
make

Launch the shell with:

./minishell

Once running, the shell will display a prompt where you can execute commands, use redirections and pipes, expand environment variables, and utilize built-in commands—all with behavior closely mimicking bash.