A custom shell environment designed to emulate basic features of traditional UNIX shells
Developed using
- Command Execution: Ability to execute standard Unix/Bash commands.
- Built-in commands: Includes multiple built-ins such as:
cdwith only a relative or absolute path.pwdwith no options.echowith option -n.envwith no options or arguments.exitwith no options.unsetwith no options.exportwith no options.
- Command History: Keeps track of previous commands by using the up & down arrow keys.
- Expansion: Our program interprets and handles environment variable expansion within quotes. Within single quotes its interpreted as a literal value while in double quotes it expands (if its a valid
envvariable), mirroring Bash's behaviour. It also supports expansion in heredocs. - Signal Handling: Includes features like interrupt (
Ctrl+C), quit (Ctrl+\), and EOF (Ctrl+D). The signals behave similar to bash. - Error Handling: Includes protection for
malloc(),pipe(),fork()and more. It also provides clear error messages (E.g. command not found, syntax error, no permission, malloc fail etc..). - Redirection And Piping: Supports intput, output, heredoc, and append redirection (
>,<,<<,>>). It also supports piping (|) allow to command chaining. - Memory Management: Our program frees and cleansup any memory/file descriptors upon termination, ensuring system stability.
- Tab Completion: Auto complete file names by using tab. Also by pressing tab in the prompt displays the current directories files/folders.
- Documentation: All functions have doxygen comments to ensure readability and to better understand the underlying logic at a glance.
- Clone the repository
git clone https://github.com/RealConrad/42minishell.git- Enter the directory and run make
cd 42minishell
make- Run the program
NOTE: If you are on Linux you must un-comment the
#include <wait.h>library located:./includes/includes.h
./minishell
- Happy shell scripting :)