2.1 Assignments and Lab work this weekIndex

• There are now three quizzes that you need to complete on Blackboard as part of your term Quiz mark.

• Check the due date for each assignment and put a reminder in your agenda, calendar, and digital assistant.

• Read All The Words, Do, and then Submit via Blackboard:
  • Assignment #08 HTML – CentOS virtual server installation
  • Assignment #12 HTML – CentOS: User and Group management (Megadeth)
  • Bonus (optional) Assignment #04 HTML – the VIM text editor
  • Bonus (optional) Assignment #09 HTML – Midterm #2 corrections
    • There is a checking program available to check your file format for this bonus assignment, but only people who Read All These Words will know about it. Wrong format means no marks.
  • Assignment #13 HTML – CentOS: Partitions, File Systems, single user, run levels, services
  • Really do Read All The Words. You don’t get a second chance to get it right.
  • Work on the above assignments in your lab period; ask questions.

2.2 Tests and quizzesIndex

For full marks, read the Test Instructions (all the words) before your final exam.

Attend a free workshop on Preparing for Exams - Test Taking Skills and Test Anxiety April 7 or April 14.

1. All three Quizzes are open until the Final Exam, then they are closed.
   • Quizzes are random samples and thus do not cover all of the questions in the practice test PDF file. Do the PDF file to be fully prepared.
2. Final Exam: 180 minutes; Tuesday April 21 11am to 2pm in room C144
   • Take a bathroom break before you sit down for three hours!
   • A third set of practice questions is posted. See Practice Tests and Answers. The third quiz, based on this set of questions, will be out soon.
   • The final exam emphasizes material after the second midterm test, but it covers the whole course and therefore includes material from all the practice question sets.

5.1 Linux RapIndex

• Courtesy of Ed Barrick: https://youtu.be/Fq82kMQgSyU

5.2 Learning the MaterialIndex

• You learn the material because you want to be a Computer Systems Technician.
  • You like doing this work; you want to be good at it.
• Review your mistakes on the midterm tests because questions re-appear.
• For practice tests and quizzes, see the Practice Test README
• Review the commands used in each lab worksheet (and their common options).
  • Unix/Linux Command List
• Review how the shell works: GLOB, redirection, quotes
  • Know why the shell behaves that way. Copy/paste teaches you nothing.
  • process quotes, split on semicolons and pipes next, then do redirection
• What are the Four Rules for Output Redirection? Three Rules for Pipes?
  • Unix Shell I/O Redirection (including Pipes)

5.3 Locked out of the Course Linux ServerIndex

Don’t try to log in to the CLS as root:

Apr  2 19:08:30 Accepted password for xxxxnnnn from 99.224.86.21
Apr  2 19:24:34 Failed password for root from 99.224.86.21
Apr  2 19:24:49 Failed password for root from 99.224.86.21
Apr  2 19:25:06 Failed password for root from 99.224.86.21
Apr  2 19:28:25 refused connect from cpe788df7afcd21-cm788df7afcd20.cpe.net.cable.rogers.com (99.224.86.21)

5.4 Attacks on the Course Linux ServerIndex

• Count the attacks: fgrep -c "refused connect" /var/log/auth.log
• Another way to count the lines (less efficient): fgrep "refused connect" /var/log/auth.log | wc
• Only show the last 10 lines: fgrep 'refused connect' /var/log/auth.log | tail
• See the current list of evil host IPs: less /etc/hosts.evil

Read All The Words by Alex and Colin

Take Notes in Class