AfNOG 2011 Workshop

Introduction to UNIX

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This one-day supplemental workshop is part of the AfNOG 2011 Workshop on Network Technology, held in conjunction with the AfNOG meeting in Dar es Salaam, Tanzania, on May 29th 2011.

This course 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:

Who should attend: AfNOG 2011 attendees who are not proficient at with the use of the UNIX or Linux operating system and for those wishing for an introduction to fundamental networking.

Prerequisites: Basic computer experience.


Sunday, May 29


Welcome:[PDF | PowerPoint]
Introduction to Unix: [PDF | PowerPoint]                                                  
     - Some history           
     - Kernel, shell, processes
     - Security model
     - File System, Directory Hierarchy, files

Introduction to Commands: [PDF | PowerPoint] 
     - Command format
     - Examples
     - Pipes
     - Command line power tools
     - Editing the command line
     - Copy/paste
     - Auto-completion with tab

Lab: [PDF | MS Word]


Permissions in Unix: [PDF | PowerPoint]                          
     - User, Group, Other
     - Process permissions
     - 'root' user
     - Octal/Numeric vs. Symbolic mode
     - Some special cases 
       (setuid/setgid/sticky bits)
     - Inherited privileges

Lab: [PDF | MS Word]

Editing: [PDF | PowerPoint]
     - 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: [PDF | MS Word]


TCP/IP Networking: [PDF | PowerPoint]              
     - Review the OSI layers
     - Packet Headers
     - Packets TCP, IP, UDP, ICMP
     - IP Allocation Golden Rules
     - Netmask calculations
     - Gateway, network
     - Default vs static routes
     - Routing aggregation/supernetting
     - Interface(s) configuration
     - Route configuration

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 | MS Word]


Terminal and Console Access: [PDF | PowerPoint]
     - Virtual terminals (consoles)
     - Mouse daemon buffer
     - Copy/paste between terminals
     - OOB and Serial console access
     - Server/Switch console access with Minicom

Lab: [PDF | MS Word]

Network Performance Definitions & Metrics: [PDF | PowerPoint]
      - 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

Lab: [text]

Directory Listing of all files.


Networking References