CST8207 Week 06 Notes
File System, Inodes, Hard links, Midterm Test #1

Ian! D. Allen – www.idallen.com

Winter 2019 - January to April 2019 - Updated 2019-02-15 00:46 EST

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

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

  1. Week 06 Notes HTML – this file – Read All The Words
  2. Test Instructions – read this before your midterm test this week.
  3. Practice Tests and Answers – practice questions for your midterm test.
  4. File System, Inodes, Links – directories, index nodes (inodes), hard links
  5. List of Commands – Command names you should know, listed by week
  6. Video Tutorials on Lynda.com – tagged by week number
  7. Linux and Sysadmin News in the World

1.2 Assignments this weekIndexup to index

Note that your upcoming Midterm Test #1 is worth more than three 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.

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 Lab work this weekIndexup to index

Note that your upcoming Midterm Test #1 is worth more than three 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.

1.3.1 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.

Worksheets #04 and #05 require you to have read Shell GLOB patterns and Shell I/O Redirection:

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

Worksheet #08 is for the upcoming Assignment 9.

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%).

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: 45 minutes; in your one-hour lecture class in Week 6.
  2. Second Midterm test: 45 minutes; in your one-hour lecture class in Week 10.
  3. Final Exam – the date will be posted on ACSIS.

Midterm tests take place in your one-hour lecture class, not in your lab period. You must write the midterm test in the lecture class in which you are registered.

1.4.1 Practice Test #1 and Brightspace Quiz #2

Practice Tests and Answers – practice questions for your midterm test.

Quizzes and Tests – Quiz #2 is taken from Practice Test #1 and is good practice for your upcoming Midterm Test #1 in Week 6.

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.

3 Marking Scheme for Assignment #06Indexup to index

Bonus (optional) Assignment #06 HTML may be done after you get your marks email and question sheet back for Midterm #1. You can use this bonus work to optionally improve your mark on the first midterm test. See the assignment for details.

Your question sheet will be brought to the lab section that you wrote on the question sheet, if it is a valid lab section. See the Brightspace course Announcements for details (under “bonus Assignment 6 details”).

4 Searching the course notesIndexup to index

I received an email like the text below from a student who was working on a problem for over two hours:

I have spent almost 2 hours on Task 4.6 and I still can’t find the 100 files. […] I think the problem is searching for warez case-insensitive. I know we learned this before, but I just can’t find it in my notes.

This is not good use of student time for two reasons:

  1. Don’t spend more than 15 minutes on a problem! Your time as a student is valuable. See the Course Introduction: fifteen minute rule
  2. I show you how to search the course notes for keywords in Assignment #05 HTML:

You have a search tool that will find keywords inside the course notes. Please use it and save yourself time.

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 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.

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
Author: 
| 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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