Custom Shell Implementation in Go

This project is a custom shell built in Go, capable of handling various built-in and external commands. It demonstrates core shell functionalities like command parsing, handling quoted strings, and executing both internal and external commands.

Features

• Built-in Commands:

  • echo: Prints arguments separated by spaces.
  • cd: Changes the current working directory.
  • pwd: Displays the current working directory.
  • type: Identifies whether a command is built-in or an external executable.
  • exit: Exits the shell.

• External Command Execution:

  • Executes commands available in the system's PATH.

• Command Parsing:

  • Supports handling of single and double-quoted strings.
  • Escapes special characters and spaces appropriately.

How It Works

The shell reads commands from the user, parses them into individual arguments, and executes them based on their type (built-in or external). The project is modular, with functions dedicated to handling specific commands and utilities.

Example Usage

$ echo "Hello, world!"
Hello, world!

$ pwd
/home/user

$ cd /tmp
$ pwd
/tmp

$ type echo
echo is a shell builtin

$ type ls
ls is /bin/ls

$ exit

Author

Developed by Md Habibur Rahman.