CShell

CShell is a simple command-line shell implemented in C. It supports basic built-in POSIX commands and can execute external commands.

Note: This is just an educational project of mine to teach myself come basic C. Do with it whatever you like:)

Features

Built-in commands:

• pwd: Print the current working directory.
• cd <directory>: Change the current directory.
• echo <message>: Print a message to the terminal.
• exit: Exit the shell.
• env: Get/set/list environment variables.
• Execution of external commands in your $PATH.
• Environment variable expansion.
• Input / Output redirection with < and >
• Piping via <command> | <command>

Getting Started

Prerequisites

• GCC or any C compiler
• Make (optional)

Building

To build the project, run:

gcc -o cshell main.c builtin.c external.c parse.c envvars.c

Alternatively, if you have make installed, you can use the provided Makefile:

make

Running

To start the shell, run:

./cshell