2024-03-21(6): OS Concepts, Shell, SSH

Intro: Course Contents (cont’d)

Data logger: https://github.com/jfasch/FH-STECE2022/blob/main/datalogger.cpp

• Cross compilation, and deployment

• System interaction from the shell

  • cat?

  • strace!

• And Python?

OS Concepts

From Introduction: Concepts and Terminology

• Overview

• Everything Is A File (Live Demo)

• Processes, Scheduling, Address Spaces

• Process Hierarchy (Parent, Child Process)

Shell Usage

From The Shell (Bash - “Bourne Again Shell”)

• Commandline

• Absolute and Relative Paths

• Special Paths

• Directory Listings: The ls Command

• Current Working Directory

• Creating And Removing Files and Directories

• Copying: cp

• Moving and Renaming: mv

• Symbolic Links, Hard Links

• Shell Configuration File: ~/.bashrc

Exercises: from Exercises: Create/Copy/Move/Remove …

• Exercise: mkdir

• Exercise: Create Files (I/O Redirection)

• Exercise: Copy Files

• Exercise: Move Files

• Exercise: Verify, Repeat

• Exercise: Copy Directory Tree

• Exercise: Remove Directory Tree

• Exercise: Funny Stuff

SSH Setup

From SSH: Secure Shell

• SSH: Basics

• SSH: Public Key Authentication

• SSH: Secure Copy (scp)