cgriceld / 42-own-bash

🖥 create own shell (minibash)

42-own-bash

42 Unix project. The code is written in accordance with The Norm (42 coding style).
The project was done in a team with Elena Kiseleva, it contains lots of parsing, signal and error handling and process management (fork, execve, etc.).

what minibash supports:

• navigate through command history using up and down arrows (done using termcap);
• modification of current or previous commands using backspace (not supports movement with left and right arrows);
• ctrl-C, ctrl-D and ctrl-\ signals;
• $?;
• environment variables;
• pipes (except for multiline commands);
• >, < and >> redirections (except for file descriptor aggregation);
• semicolon;
• single, double quotes and \;
• builtins commands :
  • echo with -n option;
  • cd with relative or absolute path;
  • pwd, export, unset and exit without any options;
  • env without any options and any arguments;
• external commands launch through execve.

usage

In the root of repository run make and launch executable -- ./minishell.

project structure

• builtins folder -- builtins commands code.
• envp folder -- code for manipulating envp array/list.
• parser folder -- code for parsing and launching (where all the magic happens, basically).
• readline folder -- reading via termcap.
• utils folder -- utils functions (some from own C library, some specific for project).

Makefile

• make -- compiles minishell executable.
• clean -- deletes object files.
• fclean -- deletes object files and minishell.
• re -- runs fclean and recompiles.