% CST8207 Week 05 Notes -- awk fields, Start-up files, Variables, Search PATH, Quoting, File System % Ian! D. Allen -- -- [www.idallen.com] % Fall 2016 - September to December 2016 - Updated 2017-01-20 00:48 EST - [Course Home Page] - [Course Outline] - [All Weeks] - [Plain Text] Readings, Assignments, Labs, Tests, and ToDo ============================================ Read (at least) these things (All The Words) -------------------------------------------- 1. [Week 05 Notes HTML] -- this file -- **Read All The Words** 2. [Practice Tests and Answers] -- practice questions for your midterm test. 3. [Selecting Fields with `awk`] -- extracting fields from input lines and columns from input files 4. [Start-Up Files] -- Login and Shell Startup Files, aliases, options: `.bash_profile` and `.bashrc` 5. [Shell Variables] -- quoting, local and environment variables, `USER HOME SHELL PATH TERM $$` 6. [Search PATH] -- how the shell finds commands 7. [Quoting] -- hiding characters from the shell 8. [Unix/Linux File System] -- directories, inodes, hard links 9. [Hard links and Unix/Linux file system index nodes (inodes)] 10. [List of Commands You Should Know] 11. [Linux and Sysadmin News in the World] 12. [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** - Naming files 5m 41s - use quotes to surround names with blanks or special characters - **5. Commands and Programs** - The PATH variable 4m 13s - **7. Configuring Your Working Environment 41m 28s** - Profile, login, and resource files 9m 11s - Setting command aliases 6m 59s - saving aliases in your `.bashrc` file - Setting and exporting environment variables 4m 54s - Setting the PATH variable 6m 10s - using double quotes instead of single quotes Assignments this week --------------------- 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] -- 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. ### 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. 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]. - [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. Lab work this week ------------------ - Finish 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]. Upcoming tests -------------- Read the [Test Instructions] (all the words) before your midterm tests. Put these dates into your phone! Use the **Name Game** link to test your name before the test. I don't answer questions about the instructions during the test. 1. **First Midterm test:** 45 minutes; in lecture class on Wednesday in Week 6 (Oct 12) 2. **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]. ### Midterm Test #1 -- Wednesday October 12 - 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. See the [Week 04 Notes HTML] for how to earn all your quiz marks. - See the [Course Outline] for the mark weight of all the quizzes. Notes from the Classroom ======================== - **Take notes in class!** Keep a pad open on your desk. - This week, we learn more about the shell. - Note that your upcoming Midterm Test 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. Commands Used ------------- Keep a notebook with a [List of Commands][List of Commands You Should Know] 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. - Bring your notes to class! Stop wasting time looking up commands. - 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! Tutoring ======== Many students find that hiring a personal tutor helps them get through the first term. Financial assistance is available. See [Algonquin Peer Tutoring] Moving Assignment 2 files ========================= If you want to clean up files in your HOME directory, you can create an `assignment02` directory under `Assignments` and move all your Assignment 2 files into it. The checking program will check there for your files. ![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/ [Plain Text] - plain text version of this page in [Pandoc Markdown] format [www.idallen.com]: http://www.idallen.com/ [Course Home Page]: .. [Course Outline]: course_outline.pdf [All Weeks]: indexcgi.cgi [Plain Text]: week05notes.txt [Week 05 Notes HTML]: week05notes.html [Practice Tests and Answers]: PRACTICE_TEST_README.html [Selecting Fields with `awk`]: 187_selecting_fields_awk.html [Start-Up Files]: 350_startup_files.html [Shell Variables]: 320_shell_variables.html [Search PATH]: 400_search_path.html [Quoting]: 440_quotes.html [Unix/Linux File System]: 450_file_system.html [Hard links and Unix/Linux file system index nodes (inodes)]: 455_links_and_inodes.html [List of Commands You Should Know]: 900_unix_command_list.html [Linux and Sysadmin News in the World]: 950_linux_world.html [Video Tutorials on Lynda.com]: 910_lynda_index.html [lynda.com]: http://algonquincollege.com/onlineresources/mobileStudent/lynda.htm [Unix for Mac OS X Users]: http://www.lynda.com/Mac-OS-X-10-6-tutorials/Unix-for-Mac-OS-X-Users/78546-2.html [Assignment #03 HTML]: assignment03.html [Assignment #04 HTML]: assignment04.html [Assignment #05 HTML]: assignment05.html [download Libre Office here]: 050_course_introduction.html#install-libreoffice-or-openoffice-into-windows [Worksheet #04 ODT]: worksheet04.odt [Worksheet #04 PDF]: worksheet04.pdf [Worksheet #04 HTML]: worksheet04.html [Worksheet #05 ODT]: worksheet05.odt [Worksheet #05 PDF]: worksheet05.pdf [Worksheet #05 HTML]: worksheet05.html [Worksheet #06 HTML]: worksheet06.html [The VI (VIM) Text Editor]: 300_vi_text_editor.html [Finding Files]: 180_finding_files.html [Shell GLOB patterns]: 190_glob_patterns.html [Shell I/O Redirection]: 200_redirection.html [Test Instructions]: 000_test_instructions.html [Week 04 Notes HTML]: week04notes.html [Algonquin Peer Tutoring]: http://www.algonquincollege.com/peer-tutoring/ [Take Notes in Class]: data/remember.jpg "Take Notes in Class" [Pandoc Markdown]: http://johnmacfarlane.net/pandoc/