Updated: 2012-03-03 02:52 EST

1 Tests and Exams Index up to index

2 Lecture Notes for This Week Index up to index

2.1 From the Class Notes link on the Course Home Page Index up to index

2.1.1 Assignments and Labs Index up to index

  • See your Blackboard ToDo list for all assignment due dates
  • Finish Lab #04 - Linux Shell Features
  • Finish Lab #05 - The VI/VIM Text Editor
  • Start Lab #06 - Linux File System Permissions (modes)

2.1.2 Practice Midterm Test #2 Index up to index

2.2 From the Classroom Whiteboard/Chalkboard Index up to index

2.2.1 Topic: Fun and You Index up to index

2.2.2 Topic: more Commands Index up to index

2.2.3 Topics: Shell Features Index up to index

  • Shell Standard Input, Output, Error - Redirection
    • I/O to and from programs using | (pipes)
  • Questions
    • What are the Rules for Pipes? See Unix Shell I/O Redirection (including Pipes)
    • extracting just field 3 from every line:  awk '{print $3}' [files...]
    • extracting just the LAST field from every line:  awk '{print $NF}' [files...]
    • examples using real authorization log http://ian.idallen.ca/auth.log
      • first and last lines
      • only sshd lines
      • count of sshd lines
      • first and last sshd lines
      • refused sshd lines (attempted attacks)
      • count of refused sshd lines (attacks)
      • IP addresses of most attacks (see “3.3 Examples of pipes” in the above Redirection link for the full pipeline)

2.2.4 Topic: The VIM (and VI) editor Index up to index

2.2.5 Topic: Modes and Permissions Index up to index

Author: 
| Ian! D. Allen  -  idallen@idallen.ca  -  Ottawa, Ontario, Canada
| Home Page: http://idallen.com/   Contact Improv: http://contactimprov.ca/
| College professor (Free/Libre GNU+Linux) at: http://teaching.idallen.com/
| Defend digital freedom:  http://eff.org/  and have fun:  http://fools.ca/

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