1 Readings, Assignments, Labs, Tests, and ToDoIndex

1.1 Read (at least) these things (All The Words)Index

Week 04 Notes HTML – this file – Read All The Words
Practice Tests and Answers – practice questions for your midterm test.
Shell GLOB patterns (wildcard pathname matching)
The VI (VIM) Text Editor
Shell I/O Redirection – stdin, stdout, stderr, and Pipes
List of Commands You Should Know
Linux and Sysadmin News in the World
Video Tutorials on Lynda.com – tagged by week number

Create your lynda.com account and watch these sections of Unix for Mac OS X Users
- these videos are for all Unix/Linux students, not just Mac OSX users
- 3. Working with Files and Directories
  - Unix text editors 6m 39s
    - vi/vim, nano
    - head, tail
  - Searching for files and directories 6m 32s
    - find using “wildcard” (GLOB) patterns - same as shell GLOB
- 6. Directing Input and Output 20m 39s
  - Standard input and standard output 1m 24s
  - Directing output to a file 4m 13s
  - Appending to a file 2m 44s
  - Directing input from a file 5m 28s
  - Piping output to input 4m 40s
  - Suppressing output 2m 10s
- 7. Configuring Your Working Environment 41m 28s
  - Setting command aliases 6m 59s
    - saving aliases in your .bashrc file

1.2 Assignments this weekIndex

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.

Review last week. Did you do everything assigned last week?
Read All The Words, Do, and then Submit via Blackboard:
- Assignment #03 HTML – working with files and pathnames: PS1 find mkdir mv cp touch file
- Bonus (optional) Assignment #04 HTML – the VIM text editor
- Assignment #05 HTML will be out soon – using GLOB wildcard patterns, finding files using GLOB, redirection and pipes
- Really do Read All The Words. You don’t get a second chance to get it right.

1.3 Lab work this weekIndex

Finish work on ODT or PDF versions of Worksheet #02 HTML and Worksheet #03 HTML so you can do Assignment #03 HTML – working with files: PS1, find, mkdir, mv, cp
- These worksheets require you to understand File System and Pathnames.
Work on the ODT or PDF Worksheet #04 HTML and Worksheet #05 HTML so you can do Assignment #05 HTML – GLOB wildcard patterns, finding files using GLOB, redirection and pipes
- These worksheets require you to understand Finding Files, Shell GLOB patterns (wildcard pathname matching) and Shell I/O Redirection (including Pipes).
Read The VI (VIM) Text Editor and optionally do the bonus Assignment #04 HTML.

1.3.1 WorksheetsIndex

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. 2. Worksheet. 3. Assignment.

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 download Libre Office here.

These first two worksheets require you to have read File System and Pathnames:

Worksheet #02 ODT – Using standard Linux commands I
- Worksheet #02 PDF
- Worksheet #02 HTML
- PS1, cd, find, less, ls, man, mkdir, passwd, pwd, rmdir
Worksheet #03 ODT – Using standard Linux commands II
- Worksheet #03 PDF
- Worksheet #03 HTML
- cat, clear, cp, find, grep, history, less, man, mv, rm, sleep, touch
Worksheet #04 ODT – shell GLOB patterns and Aliases
- Worksheet #04 PDF
- Worksheet #04 HTML
- shell GLOB patterns (wildcards), Aliases: alias, sum, unalias
Worksheet #05 ODT – shell I/O redirection (including pipes)
- Worksheet #05 PDF
- Worksheet #05 HTML
- shell I/O redirection, date, head, nl, tail, tr, wc
Worksheet #06 HTML – Optional Bonus VIM Text Editor Practice
- This is an optional worksheet for a BONUS assignment using vim
- Optional command-line VIM tutorial: the vimtutor program on the CLS.
- Bonus (optional) Assignment #04 HTML – the VIM text editor
- Read The VI (VIM) Text Editor

Worksheets prepare you for the upcoming assignments.

1.4 Upcoming testsIndex

Read the Test Instructions (all the words) before your midterm tests. Use the Name Game link to test your name before the test. I don’t answer questions about the instructions during the test.

First Midterm test: 45 minutes; in lecture class on Wednesday in Week 6 (Oct 12)
Second Midterm test: 45 minutes; in lecture class on Wednesday in Week 10 (Nov 9)

Tests take place in class in your 50-minute lecture period, not in your lab period. Each midterm test is 45 minutes long and contains approximately 45 multiple-choice questions similar to those found in Practice Tests and Answers.

1.4.1 Midterm Test #1 – October 12Index

Midterm #1 takes place on Wednesday, October 12 (Week 6) in your scheduled lecture hour (not in your lab period).
For full marks, you must read the Test Instructions before the test for important directions on how to enter your name, answers, your lab (not lecture) section number, and the test version number 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 first midterm test is posted: 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.
Blackboard has some quizzes taken randomly from the practice test. The full practice test itself is not part of your course grade, but the quizzes are part of your course grade. See below.

1.4.2 Midterm Test Quizzes Marking SchemeIndex

Three Blackboard quizzes are created from the Practice Tests made available before the two Midterm tests and Final Exam.

Each Midterm and Final Exam will have an associated set of unmarked practice questions and a set of marked quizzes based on those practice questions.

See the course outline for the mark weight of all course quizzes, midterm tests, and exams.

The quizzes are open-book, but the Midterm Tests and Final Exam are closed-book (as will be your job interview).

Each Midterm Test quiz is a small sample taken from the associated full Practice Test located in Practice Tests and Answers.

Each quiz is 10 questions long and you see the answers right after you submit the quiz. You can take the quiz as many times as you like. Every time you take the quiz, you get a random set of ten questions from the practice test.

You will not see all the practice questions by doing quizzes; to see all the practice questions, you must do all the questions in the actual PDF practice test posted in the Course Notes. Review the full PDF file; don’t rely on the quizzes to prepare you for the test!

Each quiz closes just before the Final Exam in this course; quizzes submitted after the Final Exam begins may not count toward your best score.

Your mark for this quiz is the average of your five best quiz scores. Examples:

Your best scores: 10 10 10 10 10 10 10 9 8 7 7 4
- Your quiz mark: (10+10+10+10+10)/50 = 100%
Your best scores: 10 10 10 10 9 8 7 7 4 3
- Your quiz mark: (10+10+10+10+9)/50 = 98%
Your best scores: 10 10 10 9 8 7 7 4 3 2
- Your quiz mark: (10+10+10+9+8)/50 = 94%
Your best scores: 10 8 8 8 8 5 4 4 4
- Your quiz mark: (10+8+8+8+8)/50 = 84%
Your best scores: 10 10 8 (only three quizzes submitted)
- Your quiz mark: (10+10+8+0+0)/50 = 56%

Your score will be taken from the five best scores. The more times you do the quiz, the more likely you are to have a set of excellent best scores. You must have five perfect quiz scores to get a perfect averaged quiz mark. Missing quizzes (fewer than five) count as zeroes. Only the five best scores are averaged. (Blackboard averages all the scores and thus displays your score incorrectly. Ignore the mark on Blackboard.)

This quiz closes just before the Final Exam in this course; quizzes submitted after the Final Exam begins may not count toward your best score.

See the Assignments and Quizzes section in the Blackboard left side-bar for your course.

Note: Blackboard displays the quiz mark incorrectly, since it cannot calculate “best 5” and instead averages the marks of all your quiz attempts. Your quiz mark is actually the average of your five best attempts, not all the attempts as shown by Blackboard. Ignore the Blackboard mark; it is wrong.

2 Notes from the ClassroomIndex

Take notes in class! Keep a pad open on your desk.
This week, we finish with GLOB patterns and learn about redirection and pipes.

2.1 Did not change password – CLS access revokedIndex

Students will have their CLS accounts disabled if they have not changed their default password. (I do not want people breaking into my machine because of you.)

See my online timetable for how to make an office appointment to see me if you want your account back.

2.2 Fifteen minute ruleIndex

Your time as a student is valuable. See the notes from last week.

2.3 Commands UsedIndex

Keep a notebook with a List of Commands in it. - You need to write down yourself what each command does. - I will check for this list in your lab periods. - Check the updated list of commands each week.

Are you making notes from the worksheets on how each command works?
- What do the options used in the worksheets mean, for each command?
- Don’t copy and use options that you don’t understand!
The stupid nano text editor. (Learn vim instead!)
Using GLOB patterns as -name arguments to find
- Remember to quote the find GLOB patterns to hide them from the shell!
- GLOB patterns are NOT needed in Assignment 3. See Assignment 5.
Confused about redirection and the copy and move commands? These are wrong:
- cp cal.txt >calnew,txt # WRONG: error message from cp
- mv cal.txt ../../ >cal.txt # WRONG: what is now in cal.txt ?
- No example in any of the notes or worksheets ever uses redirection and cp or mv together. These commands do not produce anything on standard output that is worth redirecting. Usually, the commands produce no output at all. Do not use redirection with mv or cp.
Confused about pathnames and blanks on the command line? This is wrong:
- cp file.txt ../../../ file.copy # WRONG
- Blanks separate arguments. This is covered in detail in Command Arguments and Options. You are giving the copy command three pathnames (three arguments), where you should have only two. The first argument is the source; the second is the destination:
- cp file.txt ../../../file.copy # RIGHT

Stop using cd Windows People! Use pathnames! This is very inefficient:

$ cd CST8207-16F
$ cd Assignments
$ cd assignment03
$ cd topdir
$ cd other
$ cat foo.txt

This is all you need to do (using the TAB key to help you):

$ cat CST8207-16F/Assignments/assignment03/topdir/other/foo.txt

Stop using cd Windows People! Use pathnames! This is very inefficient:

$ cd dir1
$ cd subdir
$ touch file
$ cd ..
$ cd ..
$ cd dir2
$ cd subdir
$ touch file
$ cd ..
$ cd ..
[...etc...]

This is all you need to do (using the TAB key to help you):

$ touch dir1/subdir/file dir2/subdir/file [...etc...]

If a pathname doesn’t work, use ls to find out why. Usually it’s because you’re spelling it wrong. Use the TAB key and the shell will complete the pathname for you, with no spelling errors.

CST8207 Week 04 Notes
VIM, stdout, stderr, and I/O redirection (including pipes)

Ian! D. Allen – idallen@idallen.ca – www.idallen.com

Fall 2016 - September to December 2016 - Updated 2017-01-20 00:48 EST

1 Readings, Assignments, Labs, Tests, and ToDoIndex

1.1 Read (at least) these things (All The Words)Index

1.2 Assignments this weekIndex

1.3 Lab work this weekIndex

1.3.1 WorksheetsIndex

1.4 Upcoming testsIndex

1.4.1 Midterm Test #1 – October 12Index

1.4.2 Midterm Test Quizzes Marking SchemeIndex

2 Notes from the ClassroomIndex

2.1 Did not change password – CLS access revokedIndex

2.2 Fifteen minute ruleIndex

2.3 Commands UsedIndex

3 Attacks on the CLSIndex

4 Locked out of the CLSIndex

CST8207 Week 04 NotesVIM, stdout, stderr, and I/O redirection (including pipes)

Ian! D. Allen – idallen@idallen.ca – www.idallen.com

Fall 2016 - September to December 2016 - Updated 2017-01-20 00:48 EST

1 Readings, Assignments, Labs, Tests, and ToDoIndex

1.1 Read (at least) these things (All The Words)Index

1.2 Assignments this weekIndex

1.3 Lab work this weekIndex

1.3.1 WorksheetsIndex

1.4 Upcoming testsIndex

1.4.1 Midterm Test #1 – October 12Index

1.4.2 Midterm Test Quizzes Marking SchemeIndex

2 Notes from the ClassroomIndex

2.1 Did not change password – CLS access revokedIndex

2.2 Fifteen minute ruleIndex

2.3 Commands UsedIndex

3 Attacks on the CLSIndex

4 Locked out of the CLSIndex

CST8207 Week 04 Notes
VIM, stdout, stderr, and I/O redirection (including pipes)