GSantoine / minishell

Minishell - A simple shell inspired by Bash in C

8t

Minishell is a simplified shell implementation, providing a command-line interface where users can interact with the operating system by executing various commands. The command line parsing is made recursively using a lexer parsing the line into tokens, building an AST.

Project Name	minishell
Description	An implementation of C-based shell capable of handling redirections, pipes, environment variables, and various built-in functionalities.
Technologies
External libraries	readline(), rl_clear_history(), rl_on_new_line(), rl_replace_line(), rl_redisplay(), add_history(), printf(), malloc(), free(), write(), access(), open(), read(), close(), fork(), wait(), waitpid(), wait3(), wait4(), signal(), sigaction(), sigemptyset(), sigaddset(), kill(), exit(), getcwd(), chdir(), stat(), lstat(), fstat(), unlink(), execve(), dup(), dup2(), pipe(), opendir(), readdir(), closedir(), strerror(), perror(), isatty(), ttyname(), ttyslot(), ioctl(), getenv(), tcsetattr(), tcgetattr(), tgetent(), tgetflag(), tgetnum(), tgetstr(), tgoto(), tputs()

Features

• Executables search from PATH and launch: executes a wide range of commands, including both built-in commands and external commands available in the system.
• Built-in commands: custom implementation of common binaries such as cd, echo, pwd, exit, export, env, and unset.
• Redirection and Pipes: supports input/output redirection and pipes, allowing users to redirect command input and output streams.
• Signal Handling: handles various signals such as Ctrl-C, Ctrl-D and Ctrl-, providing a graceful termination of running commands.
• Env management: manage environment variables, set new variables, and modify existing ones using the built-in commands.
• Environment variables expansion
• heredoc
• double quotes and single quotes
• interactive mode
• Command History
• $?

Usage

  gcl https://github.com/GSantoine/minishell.git
  cd minishell
  make
  ./minishell

Comments

The use of readline() cause memory leaks.