Simple Shell

This is a simple Unix shell implemented in C. It supports basic shell functionalities and launching external scripts.

How to Use

1. Compilation: clang main.c ./built_in_cmd.c -o simple_shell

2. Execution: ./simple_shell

3. Commands:

• cd: Change directory. Usage: cd <directory>
• mkdir: Create directory. Usage: mkdir <directory>
• exit: Exit the shell. Usage: exit
• ls: List directory contents. Usage: ls [options] [directory]
• echo: Print arguments to the standard output. Usage: echo [options] <message>
• mv: Move (rename) files or directories. Usage: mv [options] <source> <destination>
• touch: Create an empty file or update the timestamp of an existing file. Usage: touch [options] <file>
• Launching external scripts: You can execute any external script by entering its name. Usage: <script_name>
• Running Commands in the PATH: You can execute commands located in directories listed in the PATH environment variable directly from the shell by entering their names. Usage: <command_name>

Features

• Basic shell functionalities.
• Support for external script execution and commands in the PATH.

Limitations

• No advanced shell features like piping, redirection, globalling pattern, regular expression, etc.