Introduction to UNIX / Linux

This is part of the ASP 2014 African School of Fundamental Physics and its Application (Aug 3 - 23, 2014, Dakar, Sénégal at Université Cheikh Anta Diop)

Introduction

This 5 hour (3 sessions) supplemental lecture is part of the 2014 edition of the African School of Fundamental Physics taking place at Université Cheikh Anta Diop in Dakar, Sénégal, on Aug. 3 - 23, 2014).

This course is held for those students needing some intensive, hands-on training to introduce them to core UNIX operating system concepts as well as fundamental network concepts.

Topics covered include:

• UNIX / Linux Operating System Overview
• Operating System Commands
• vi Editor Usage
• Core Network Concepts
• Network Addressing
• Network Debugging Tools

Prerequisites: Basic computer experience.

Course Materials

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Session 1: Mon., Aug 4 - 17h30 - 18h30

Welcome: PDF

Introduction to Unix: PDF

• Some history
• Kernel, shell, processes
• Security model
• File System, Directory Hierarchy, files

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Session 2: Tue., Aug 5 - 16h00 - 18h30

Introduction to Commands: PDF

• Command format
• Examples
• Pipes
• Command line power tools
• Editing the command line
• Copy/paste
• Auto-completion with tab

Lab: HTML | PDF

Editing: PDF

• Using vi (why?)
• Other editor options (ee, joe, pico, emacs, xemacs)
• vi modes
• vi tricks (search ,replace, movement)
• Editing configuration files

References:

• "Vi Quick Reference" PDF
• "Vi Reference Card" PDF

Lab: HTML | PDF

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Session 3: Wed., Aug 6 - 11h00 - 12h30

TCP/IP Networking: PDF

Layers:

• Review the OSI layers
• Packets TCP, IP, UDP, ICMP

Addressing:

• Netmask calculations
• IP Allocation Golden Rules

Routing/forwarding:

• Route configuration
• Gateway, network
• Default vs static routes
• Routing aggregation/supernetting
• Longest Prefix Rule
• Hop-by-hop forwarding
• Asymmetric paths

Lab: HTML | PDF

References: "Agreggation Tree" [PDF]

• "Aggregation Tree - Example of Use" [PDF]
• "Decimal - Hex - Binary - Conversion" [html | PDF]
• "Golden Rules for Allocating IP Numbers" [html | PDF]
• "IP Addressing" [html | PDF]
• "Netmask Table" [html| PDF]

Lab: [PDF | TEXT]

Additional Materials

Network Performance Definitions & Metrics: [PDF]

• Planning
• Common measurements: bps, pps, rtt, jitter, etc.
• Channel capacity and utilization
• 95th percentile
• end-to-end delay
• Types of delay
• Packet loss
• Flow control and congestion algorithms
• Common tools: mtr, netstat, lsof, tcpdump, tshark (wireshark), iptraf, iperf

Reference

• VI editor: reference cards: Card 1:PDF | Card 2:PDF
• Networking References
  • Agreggation Tree: PDF
  • Aggregation Tree - Example of Use: PDF
  • Decimal - Hex - Binary - Conversion tables: html | PDF
  • Golden Rules for Allocating IP Numbers: html | PDF
  • IP Addressing: html | PDF
  • Netmask Table: html | PDF

Instructors

• Fanta Bouba [FB] - (Sénégal/Tchad?)
• Khoudia Gueye Sy [KG] - (Sénégal)
• Phil Regnauld* [PR] - (Denmark/France?)