# ComputerCraft Operating System

-- Initialize the operating system
local os = {}

-- Function to start the OS
function os.start()
    print("Welcome to the ComputerCraft OS!")
    os.run()
end

-- Function to run the main loop
function os.run()
    while true do
        print("Type 'help' for a list of commands.")
        local input = read()
        os.execute(input)
    end
end

-- Function to execute commands
function os.execute(command)
    if command == "help" then
        print("Available commands: help, exit, clear")
    elseif command == "exit" then
        print("Shutting down...")
        os.shutdown()
    elseif command == "clear" then
        term.clear()
        term.setCursorPos(1, 1)
    else
        print("Command not recognized.")
    end
end

-- Function to shutdown the OS
function os.shutdown()
    os.run = function() end -- Prevents the loop from continuing
end

-- Start the operating system
os.start()