CST8207 Week 09 Notes
personal web page, system logging, processes, cron, at; Shell Scripts: header, shebang #!, parameters $0 $1 $* $@ $#

Ian! D. Allen – www.idallen.com

Winter 2019 - January to April 2019 - Updated 2019-03-21 01:17 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. Cron and At – delayed and repeated scheduled execution: at, cron, and crontab
  6. Shell Scripts – executable lists of commands: #!, script header, command arguments and positional parameters: $1, $2, $*, $@, $#
  7. List of Commands – Command names you should know, listed by week
  8. Video Tutorials on Lynda.com – tagged by week number
  9. Linux and Sysadmin News in the World

1.2 Assignments, Quizzes, and Lab work this weekIndexup to index

Reminder: There are now two quizzes that you need to complete (five times each) on Brightspace as part of your term Quiz mark. A third quiz will be posted before the Final Exam. The Quizzes are not optional; see the Course Outline.

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.

1.2.1 Worksheets

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.

1.3 Upcoming tests and examsIndexup to index

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

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.

Bring your favourite marker to your test

Follow this link to see all your upcoming Quizzes and Tests. The dates are also posted on the Course Home Page and on Brightspace CST8207.

For full marks, read the Test Instructions (all the words) before your midterm tests.

  1. First Midterm test: Done.
  2. Second Midterm test: 45 minutes; 8am Friday March 22 in your 50-minute lecture class in Week 10.
  3. Final Exam: The date is now posted on ACSIS: Tuesday April 23 from 1pm to 4pm in T119.

Midterm tests take place in your one-hour lecture class, not in your lab period.

2 Notes from the ClassroomIndexup to index

2.1 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.

Don’t create files or directories that anyone (“other”) can write, except the few required ones in the one Assignment #09 HTML head directory!

You must look at all the files in your account to try to find these files or directories that you have created with “other” write permissions. You can find the files the hard way, using cd and ls, or you can do it the easy way using a recursive command to look for them:

3 Your own personal web page on the CLSIndexup to index

This is part of Assignment #09 HTML. You can do it now, if you Read All The Words.

4 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?

5 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.

6 SSH and HTTP 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 ongoing attacks on the CLS.

7 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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