% CST8207 Week 06 Notes -- Midterm Test 1 analysis, Variables, Search PATH, Quoting, File System, Inodes, Hard links % Ian! D. Allen -- -- [www.idallen.com] % Winter 2016 - January to April 2016 - Updated 2016-03-13 17:20 EDT - [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 06 Notes HTML] -- this file -- **Read All The Words** 2. [Shell Variables] -- quoting, local and environment variables, `USER HOME SHELL PATH TERM $$` 3. [Search PATH] -- how the shell finds commands 4. [Quoting] -- hiding characters from the shell 5. [Unix/Linux File System] -- directories, inodes, hard links 6. [Hard links and Unix/Linux file system index nodes (inodes)] 7. [List of Commands You Should Know] 8. [Linux and Sysadmin News in the World] 9. [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 - Hard links 5m 30s - Symbolic links 6m 36s - **5. Commands and Programs** - The PATH variable 4m 13s - Disk information commands 6m 8s - df, du, - **7. Configuring Your Working Environment 41m 28s** - 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. - Read All The Words, Do, and then Submit via Blackboard: - Bonus (optional) [Assignment #04 HTML] -- the VIM text editor - [Assignment #05 HTML] -- GLOB wildcard patterns, finding files using GLOB, redirection and pipes - Bonus (optional) [Assignment #06 HTML] about Midterm #1 - There will be a checking program available to check your file format for this bonus assignment, but only people who Read All These Words will know about it. Wrong format means no marks. - [Assignment #07 HTML] -- start-up files, environment, search PATH, quoting, hard and soft links, disk usage - 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. 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 #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] Lab work this week ------------------ - 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 - The worksheets will be easier once you read [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]. - Do Bonus (optional) [Assignment #06 HTML] about Midterm #1 - There will be a checking program available to check your file format for this bonus assignment, but only people who Read All These Words will know about it. Wrong format means no marks. - [Assignment #07 HTML] -- start-up files, environment, search PATH, quoting, hard and soft links, disk usage Upcoming tests -------------- Read the [Test Instructions] (all the words) before your midterm tests. Put these dates into your phone! - **Second Midterm test:** 45 minutes; in lecture class noon Friday in Week 9 (Mar 18) - **Final Exam:** 8am to 11am (three hours) in C144 Wednesday April 27 in Week 15 - Three Hours! Take a bathroom break before you start the exam. 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]. The Final Exam is three hours long. Take a washroom break before you start. Midterm Test #1 Analysis ======================== - 86 students are registered in the course. - Of the 86, 3 did not write the test, leaving 83 who did. - Of the 83, 12 did not enter their name correctly. See below. - Of the 83, 12 did not enter a valid test version number. See below. - Number of students who got question `#45` wrong even though the answer was given in the **Test Instructions** printed at the top of the test: `1` - The 83 class scores: 97.8 97.8 95.6 95.6 95.6 91.1 91.1 91.1 91.1 91.1 91.1 88.9 88.9 88 86.7 86.7 85.8 84.4 84.4 83.6 83.6 82.2 82.2 80 80 73.3 73.3 73.3 73.3 71.1 71.1 70.4 68.9 68.9 66.7 66.7 66.7 66.7 64.4 64.4 62.2 60 60 60 57.8 57.8 57.2 55.6 53.3 53.3 52.8 51.1 51.1 51.1 48.9 48.9 46.7 46.7 46.2 44.4 42.2 41.4 40 40 39.6 39.6 39.6 37.8 37.8 35.6 35.2 34.8 34.8 33.3 33.3 31.1 31.1 26.7 26.4 26.4 26.1 15.6 8.7 83: Pass 54 (65.1%) Fail 29 (34.9%) 25 A (30.1%) 8 A- 6 A 11 A+ 7 B ( 8.4%) 3 B- 4 B 0 B+ 12 C (14.5%) 4 C- 2 C 6 C+ 10 D (12.0%) 3 D- 4 D 3 D+ 29 F (34.9%) 23 F- 2 F 4 F+ 90% - 100% 11 *********** 80% - 90% 14 ************** 70% - 80% 7 ******* 60% - 70% 12 ************ 50% - 60% 10 ********** 40% - 50% 13 ************* 30% - 40% 10 ********** 20% - 30% 4 **** 10% - 20% 1 * 0% - 10% 1 * - You can see the class errors in [Midterm Test #1 PDF]. > Students with errors on their mark-sense forms didn't get a mark. You need > to re-read the [Test Instructions] and then watch your EMail for a message > on how to fix the name or version number on your mark-sense form. Do what > the EMail says. From the Class Notes link on the Course Home Page ================================================= - [Course Home Page] - [All Weeks] - Review last week. Did you do everything assigned last week? From the Classroom Whiteboard/Chalkboard ======================================== - **Take notes in class!** Your in-class notes would go here. - 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! - Bring your notes to class! Stop wasting time looking up commands. - Useful command: `hostname` - Needed for [Assignment #07 HTML] - Three useful options to the `wc` command (often used in tests): - `wc -l` - `wc -w` (Needed for your second midterm test.) - `wc -c` - Know (for the assignment) the three commands that are [directory operations][Hard links and Unix/Linux file system index nodes (inodes)] that manipulate file names; they don't touch the file data and don't need any permissions on the file data. - ASCII-Art Weather. Widen your terminal to 125 characters or more and type this at any shell prompt: `curl wttr.in/ottawa` - See also - A [Command Line Primer for Beginners] Fifteen minute rule ------------------- Your time as a student is valuable. See the [Week 03 Notes HTML]. Commands -------- 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. Locked out ---------- The CLS will lock out your IP address if you can't type your own userid correctly. If this happens, you have to follow the posted directions to have me unlock your IP address. You can change to another IP address. You can always come to school where no IP addresses are locked out. ![Take Notes in Class] -- | Ian! D. Allen - 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]: week06notes.txt [Week 06 Notes HTML]: week06notes.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 #04 HTML]: assignment04.html [Assignment #05 HTML]: assignment05.html [Assignment #06 HTML]: assignment06.html [Assignment #07 HTML]: assignment07.html [download Libre Office here]: 050_course_introduction.html#install-libreoffice-or-openoffice-into-windows [Worksheet #02 ODT]: worksheet02.odt [Worksheet #02 PDF]: worksheet02.pdf [Worksheet #02 HTML]: worksheet02.html [Worksheet #03 ODT]: worksheet03.odt [Worksheet #03 PDF]: worksheet03.pdf [Worksheet #03 HTML]: worksheet03.html [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 [Practice Tests and Answers]: PRACTICE_TEST_README.html [Midterm Test #1 PDF]: midterm1_16w.pdf [Command Line Primer for Beginners]: http://lifehacker.com/5633909/who-needs-a-mouse-learn-to-use-the-command-line-for-almost-anything [Week 03 Notes HTML]: week03notes.html [Take Notes in Class]: data/remember.jpg "Take Notes in Class" [Pandoc Markdown]: http://johnmacfarlane.net/pandoc/