C - Simple Shell

0. Write a beautiful code that passes the Betty checks

1. Write a UNIX command line interpreter.

2. Simple shell 0.1 +

Handle command lines with arguments

3. Simple shell 0.2 +

Handle the PATH fork must not be called if the command doesn’t exist

4. Simple shell 0.3 +

Implement the exit built-in, that exits the shell Usage: exit You don’t have to handle any argument to the built-in exit

5. Simple shell 0.4 +

Implement the env built-in, that prints the current environment

Additional 11 advanced tasks