🐚 minishell

Learning goals:

Understand the concept and division of labor of between the Lexer, Parser, Expander & Executor which lie at the core of many applications that involve complex user input processing.
Concurrently getting comforatble with core features of bash, e.g. environment variables, (multi-) redirection of output, chaining of commands etc.
Learn to collaborate on a coding project which means developing strategies to split, review and integrate code.
Learning how to do Reverse Engineering
Maintaining a bigger code base (Version control, file system management, naming conventions, documentation...).

execute binaries given an absolute, relative path or using the PATH environment variable
standard i/o redirections (>, <, >>), as well as the heredoc
implement recursion for subshells "()" with their i/o redirection
executing multiple commands simulaneously and subsequently with pipe operators
read, save and manipulate environment variables
handle signals CTRL+D, CTRL+C, CTRL+/
implement some of the built-in functions (cd, export, unset, exit...)
...