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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.).

demo

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.

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