Terminal = An interface that provides a display for output and and a key boardkeyboard for input to a shell session .
Shell = Interpreter that executes commands typed as stringstrings
Console: Actually two types of console we use:
- Physical console=Theconsole =The hardware display and keyboard used to interact with a system
- Virtual console = One of multiple logical consoles that can each support an independent login session.
Virtual console= One of multiple logical consoles that can each support an independent login session.
tty (teletype iei.e., terminal). = AA terminal is a basically just a user interface device that uses text for input and output.message messages.