Linux/Unix – Buildup to Administrator/PowerUser («LINUX2»)

• Knowing the OS architecture of Unix/Linux
• Knowing the license models of OpenSource software
• Working in-depth with commands and the command line
• Using filter commands (sed, grep, awk & Co.) with regular expressions
• Setting and changing access rights for users, groups and everyone else
• Increasing system security through appropriate access rights
• Applying special access rights
• Creating, managing and operating file systems
• Creating, managing and monitoring processes
• Knowing Linux/Unix services and their administration
• Checking the status of Linux/Unix services
• Using «cron» and «at»
• Automating tasks
• Installing software packages
• Compiling software from “scratch”
• Getting to know the shell as a programming language
• Designing and writing your own small shell scripts

1 Intro

• Course outline
• What this course can do 

2 Basics

• Which operating system? 
• Unix – the definition 
• Unix derivatives or unixoid systems
• Kernels 
• Standards
• Hall of fame
• Unix for what?

3 Unix architecture

• Kernel
• Subsystems
• Application Layer – API

4 Commands

• Commands?
• Command line
• A few little groups of commandos? 
• Standard channels
• The Unix construction kit
• Copying Directory Trees
• Commands for file systems 
• Commands for file formatting 
• Commands for text editing/pattern recognition

5 Users, groups and access rights

• Users and Groups
• Authentication
• User 
• Passwords
• Groups
• Others – all others
• Manage access
• Special access rights – SUID & Co.
• SUID bit
• SGID bit
• Sticky bit – sticky bit 
• Setting the special access rights 
• The «file creation mask» – umask
• Troubleshooting 

6 File systems

• Filesystems – why?
• Unix file systems 
• The best known/most common/most trendy types
• Network file systems
• Partitions
• Files 
• Directories and the Directory Tree
• Create, integrate and manage file systems

7 Processes

• What is a process?
• Information on processes
• System calls – systemcalls
• binaryfiles
• Commands for process management
• /proc
• fork, exec, wait & Co.
• Manage processes
• Process communication
• Priorities

8 Unix services

• What are Unix services?
• Existing services
• Solaris «smf», MacOS X «launchd»
• Linux «upstart» or «systemd»
• «cron» and «at» – two typical Unix daemons

9 Software installation

• Working with packages 
• Applications and packages in do-it-yourself construction

10 Network (optional repetition from UXE)

• Basics
• OpenSSH
• Synchronize files and directories with rsync
• A text-based browser – lynx
• Transfer URLs – curl
• Download medium «wget»

11 Shell programming

• Programming style
• Tools for SW development
• Version control
• Recording with script
• Internal vs. external commands
• Parameter substitution
• Syntax
• Shell scripts
• Flowcharts 
• How to execute? 
• #! – no (real) hieroglyphs
• Write scripts yourself

12 Outlook

• Practice 
• Further training
• Unix – Quo vadis 
• Unix migration

Short introductions to topics, individual and group work, reflection through exercises and in a learning conversation

This course is aimed at IT professionals and Linux/Unix Juniors who want to deepen their know-how in order to use Linux/Unix systems efficiently, run the command line and shell, develop software and services, carry out simple Linux/Unix administration and operate Linux/Unix systems. The course also addresses the following job roles: IT architects, project managers, system engineers and architects, system administrators as well as first and second level support.

Knowledge and experience in handling Linux/Unix systems according to the following course: