CST8207 Week 09 Notes
personal web page, system logging, processes, Midterm Test #2 and Analysis

Ian! D. Allen – www.idallen.com

Winter 2018 - January to April 2018 - Updated 2018-03-28 14:10 EDT

1 Readings, Assignments, Labs, Tests, and ToDoIndexup to index

1.1 Read (at least) these things (All The Words)Indexup to index

  1. Week 09 Notes HTML – this file – Read All The Words
  2. Useful programs – file compression: gzip, bzip2, zless; multi-file archiving: tar, zip; file comparison: diff
  3. System Logging – log files, kernel messages, /var/log/, dmesg
  4. Processes – Jobs, background, foreground, kill, killall
  5. Next week: Cron and At – delayed and repeated scheduled execution: at, cron, and crontab
  6. List of Commands – Command names you should know, listed by week
  7. Video Tutorials on Lynda.com – tagged by week number
  8. Linux and Sysadmin News in the World

1.2 Assignments and lab work this weekIndexup to index

Check the due date for each assignment and put a reminder in your agenda, calendar, and digital assistant. Just like in the Real World, not all due dates are on the same days or at the same times.

1.3 WorksheetsIndexup to index

Worksheets are preparation for your assignments. You can’t do the assignments without having done the worksheets first, and you can’t do the worksheets without having first read the Course Notes:

  1. Read the web notes. (Please: Read All The Words)
  2. Do the relevant Worksheet(s).
  3. Do the relevant Assignment(s).

Make notes from the worksheets on how each command works. What do the options used in the worksheets mean, for each command? (See the weekly List of Commands.)

Form a small study group to do the worksheets. Each person tries the example given, and you make sure you all get the same answers. Worksheets are not for hand-in; they are not worth marks; the assignments test your knowledge of the lectures and worksheets.

The worksheets are available in four formats: Open Office (ODT), PDF, HTML, and Text. Only the Open Office format allows you “fill in the blanks” in the worksheet. The PDF format looks good but doesn’t allow you to type into the blanks in the worksheet. The HTML format is crude but useful for quick for viewing online.

Do NOT open the Worksheet ODT files using any Microsoft products; they will mangle the format and mis-number the questions. Use the free Libre Office or Open Office programs to open these ODT documents. On campus, you can get a copy here: Course Introduction: Install Libre Office.

Worksheet #06 is for the optional VIM Bonus Assignment (extra credit):

Worksheet #08 is for Assignment #09 HTML.

Worksheets prepare you for the upcoming assignments.

1.4 Upcoming tests and examsIndexup to index

This course has two midterm tests (10%, 15%) and one final exam (40%).

Bring your favourite marker to your test

Note that your upcoming Midterm Test #2 is worth more than five assignments put together. Don’t spend all your time doing an assignment at the expense of studying the Practice Tests and Answers for the Midterm Test.

1.4.1 Midterm Test #2 – Wednesday March 21 (week 9) – 15%Indexup to index

Your Second Midterm test is 45 minutes long and contains approximately 45 multiple-choice questions similar to those found in the two preceding Practice Tests and Answers. Do both practice tests before the Second Midterm test! You must write the test in the lecture class in which you are registered.

  • Time: in your one-hour lecture class on Wednesday in Week 9 (March 21).

  • General seating; sit anywhere.

  • 45 minutes for 45 multiple-choice questions

  • Do both the practice tests before the Midterm test!

  • The tests and exams are all closed-book, no aids, just like your job interview. You will be given some scrap paper to write on.

  • For full marks, you must read the Test Instructions before the test for important directions on how to enter your name, student number, answers, your lab (not lecture) section number, and the test version code on the question sheet and the mark-sense forms.

  • There may be more questions on the test than you can answer in the time allowed; answer the ones you know, first.

  • A set of practice questions and answers for the second midterm test is posted in Practice Tests and Answers.

    • The tests use the semicolon ; to separate multiple commands on the same line, to save space and paper, e.g. three separate commands can be written on one line like this: date ; echo "hi" ; ls
    • Do not use semicolons as an interactive human user! Type each command on its own line with the [Enter] key.

1.4.2 Midterm #2 TopicsIndexup to index

  • The Weekly Notes 1 through 7 inclusive, including the readings.
  • Weekly web pages (in the notes) up to and including Symbolic Links.
    • Does NOT include permissions.
  • Worksheets 2, 3, 4, and 5.
  • Assignments 2, 3, 5, 7, and 8.
  • The questions in the first two practice tests in Practice Tests and Answers.
  • Does not include anything about editors vim or nano.
  • Does not include anything about the Course Introduction.

For full marks, you must read and understand the Test Instructions.

1.4.3 Blackboard Quiz #2Indexup to index

  • Blackboard has some quizzes taken randomly from the second practice test in Practice Tests and Answers. Do both the first and second practice tests and quizzes to prepare for Midterm #2.

  • The practice test itself is not part of your course grade, but these quizzes are part of your course grade.

  • See the Blackboard Quizzes section located in Practice Tests and Answers.

1.4.4 The Final Exam – 10:30am Saturday April 28 2018 – 40%Indexup to index

Final Exam: Saturday April 28 10h30am (10:30am to 1:30pm; 3 hours – 40%) in room T102A,B,C.

  • The Final Exam is three hours long and contains approximately 180 multiple-choice questions similar to those found in the three preceding Practice Tests and Answers.
  • Do all three practice tests before the Final Exam!
  • Three Hours! Take a bathroom break before you start the exam!

All three practice tests will be posted under Practice Tests and Answers. The Final Exam is comprehensive of the whole course; you need to do all three practice tests for the Final Exam.

2 Midterm Test #2 AnalysisIndexup to index

I spent an hour correcting your errors and omissions on your mark-sense forms. Many of you lost marks for that. Before your final exam, carefully re-read the posted Test Instructions. Penalties go up for making the same errors on subsequent tests.

Here are some statistics for the second midterm test:

The 90 class scores:

100 98 95.5 95.5 93.5 93.5 93.2 90.9 88.6 86.4 86 84.3 83.2 80.2 80.2 80.2 79.5 78.3 78 78 78 78 77.3 75.7 75.7 75.7 75.7 75 75 75 75 75 73.5 72.7 71.3 70.6 70.5 69.8 69.8 69 64.8 64.2 63.7 62.4 61.7 60.1 60.1 59.9 57.9 57.9 56.8 56.2 55.7 55.7 53.5 53.5 52.9 52.3 51.2 50 49 49 48.5 47.7 47.7 47.7 47.7 44.5 43.2 42.3 42.3 40.9 40.1 38.6 37.9 37.9 36.4 35.6 34.6 34.1 34.1 33.4 33.4 28.7 28.1 25.7 20.5 20.5 19.4 10.5

One student got 100% on the test, but lost marks for answering Question 45.

3 Notes from the ClassroomIndexup to index

3.1 Commands UsedIndexup to index

Keep a notebook with a List of Commands in it.

  • You need to write down yourself what each command does.
  • Check the updated list of commands each week.
  • I will check for this list in your lab periods.
  • Bring your notes to class! Stop wasting time looking up commands.

4 Your own personal web page on the CLSIndexup to index

This is part of the upcoming Assignment #09 HTML. You can do it now.

5 Who is using the VIM editor?Indexup to index

This page may take a minute or two to load; be patient: Who is using the VIM editor?

6 TutoringIndexup to index

Many students find that hiring a personal tutor helps them get through the first term. Financial assistance is available. See the Tutoring heading in the Course Introduction.

7 SSH Attacks on the CLSIndexup to index

You are not paranoid if they really are out to get you! See the Week 03 Notes HTML for command pipelines to count the SSH attacks on the CLS.

8 Locked out of the CLSIndexup to index

When you are locked out, follow the directions in the notes to get your IP address re-enabled.

Take Notes in Class
| Ian! D. Allen, BA, MMath  -  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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