Updated: 2017-03-06 00:42 EST
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.
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. Worksheets. 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.
alias, sum, unalias
date, head, nl, tail, tr, wc
vim
vimtutor
program on the CLS.Worksheets prepare you for the upcoming assignments.
This course has two midterm tests and one final exam.
Your Second Midterm test is 45 minutes long and contains approximately 45 multiple-choice questions similar to those found in the two preceding Practice Tests and Answers. Do both practice tests before the Second Midterm test!
Midterm tests take place at 10am in your 50-minute lecture class, not in your lab period.
The Final Exam is three hours long and contains approximately 180 multiple-choice questions similar to those found in the three preceding Practice Tests and Answers. Do all three practice tests before the Final Exam!
All three practice tests will be posted under Practice Tests and Answers. The Final Exam is comprehensive of the whole course; you need to do all three practice tests for the Final Exam.
Here are the final statistics for the first midterm test:
94 students are registered in the course.
Of the 94, 3 did not write the test, leaving 91 who did.
Of the 91, 39 did not enter a valid test version code.
Of the 91, 13 did not enter their own name correctly.
Of the 91, 4 did not enter their own student number correctly.
Of the 91, 19 did not put their name on their question sheet.
Of the 91, 20 got question #45 wrong even though the answer was given in the Test Instructions printed at the start of the test.
The 91 class scores:
97.8 95.6 93.3 93.3 88.9 84.9 84.4 84.4 84.4 82.2 80 77 75.6 74.8 74.8 73.3 72.6 71.1 71.1 71.1 70.4 70.4 68.9 68.9 68.2 68.2 66.7 66.7 66.7 65.3 64.4 64.4 64.4 63.8 63.2 61.6 61.6 61 60 58.2 57.8 57.8 57.2 56.6 55.6 55.6 55 55 53.3 52.3 51.1 51.1 50.6 47.9 46.2 44.4 41.8 41.8 41.8 41.4 41.4 40 40 39.6 39.2 37.4 37 37 36.7 35.6 35.2 35.2 33.3 33 32.7 31.1 28.9 28.3 28.3 28 26.4 26.4 26.1 25.9 21.8 19.6 19.6 19.4 19.4 17.4 15.6
I spent several hours correcting your errors on the mark-sense forms. Before your next test, you need to re-read the Test Instructions. Penalties go up for making errors on the next test.
Take notes in class! Keep a pad open on your desk.
Next week is Study Break Week. Get caught up on your worksheets!
fgrep '72.142.19.154' /var/log/auth.log | fgrep 'Failed'
fgrep 'Failed password for invalid user ' /var/log/auth.log | awk '{print $11}' | sort | uniq -c | sort -n
fgrep 'Failed password for ' /var/log/auth.log | awk '{print $9}' | sort | uniq -c | sort -n
curl wttr.in/ottawa
hostname
wc
command (often used in tests):
wc -l
wc -w
(Needed for your second midterm test.)wc -c
Note from a student on Tuesday:
Dear Professor Allen,
Hello!
I was working with the mid-term practice last weekend, and it doesn't goes
very well. And then I go back to watch the class notes(I know! I should do
that in the first place) because I realize that I missed lots of the
information. Then I found that the pages of course notes are super helpful.
It helps me a lot!
I thought the pages are too much links and too complex when I just taking a
quick look in the first time, but I was wrong. It's so impressive that the
contents are strong logical, everything is explained in detail but not
complicated, easy to understand. Most of the things does not take me a long
time to understand.
I really should read the pages earlier!!!
It does takes me many time to adapt the new learning style as a foreign
student, but I am feeling better right now. Hopefully, it is not too
late for the test.
Anyway, just want to tell you that the course pages are very helpful. And
thank you, This is a great work for us!
Best Regards.
Note from a former student:
Hey Ian,
I just wanted to thank you again for the reference that you me when
applying for a government position last year.
I ended up getting the job and I am part of a great team.
Thanks again,
If you want a good reference from me, get great marks and keep your attendance up-to-date.
Here is a note from an International Student who was charged with plagiarism (academic fraud) in a previous year:
Professor,
After everything, I would just like to thank you for not giving us
any harsher consequences. I really appreciate it, it's probably the
best Christmas gift after this stressful weekend I could get. And
what might be weird for you, I'd like to thank you for that you
found this plagiarism out because I have a lesson in my mind I will
never forget. I'm still very embarrassed [...] but these are the
consequences I have to face right now. Thank you once again and I
wish you Merry Christmas and Happy New Year.
One other student involved in the above case failed the course. Review the class notes on Plagiarism if you copy the work of other students or if you let your work be copied by other students. I know who you are and we’re going to have a chat about your behaviour soon.
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.
A user found a keyboard-driven web browser (Vimperator) that led him to using VIM, the editor it was based on:
“I become quickly fond of Vimperator – it complemented my current workflow with the mouse very well. I could use my other hand to close tabs with ‘d’ etc. Over time my surfing got really efficient and that made me curious – if Vimperator can make surfing the web this good, then perhaps that weird Vim editor isn’t that bad after all? So, I read about Vim and started using it. It took me literally hours before I was hooked with Vim. I was mind blown!
And it was after that moment I truly understood how powerful and efficient a keyboard driven workflow can be. The terminal is not just some niche thing nerds use to look cool."
Learn that editor!
In addition to the SSH attacks, the Course Linux Server receives attacks using bogus HTTP requests. These unsuccessful attacks below attempt to use a chain of parent directories to fetch a file out of the file system:
# zfgrep '../..' /var/log/apache2/error.log*
/var/log/apache2/error.log:[Wed Oct 19 20:49:33 2016] [error] [client 189.100.188.31] Invalid URI in request GET /../../../../../../../mnt/mtd/qt HTTP/1.0
/var/log/apache2/error.log.1:[Sat Oct 15 06:49:57 2016] [error] [client 177.142.99.103] Invalid URI in request GET /../../../../../../../mnt/mtd/qt HTTP/1.0
/var/log/apache2/error.log.14.gz:[Mon Jun 27 17:54:40 2016] [error] [client 222.198.128.207] Invalid URI in request GET /../../../../../../../mnt/mtd/3qS9 HTTP/1.1
/var/log/apache2/error.log.2.gz:[Fri Oct 07 09:34:11 2016] [error] [client 64.137.234.42] Invalid URI in request GET /../../../../../../../mnt/mtd/ahMk HTTP/1.1
/var/log/apache2/error.log.22.gz:[Mon May 02 12:21:45 2016] [error] [client 222.235.67.147] Invalid URI in request GET /../../../../../../../mnt/mtd/IJSj HTTP/1.1
/var/log/apache2/error.log.23.gz:[Tue Apr 26 17:09:59 2016] [error] [client 67.79.37.250] Invalid URI in request GET /../../../../../../../mnt/mtd/yqcP HTTP/1.1
/var/log/apache2/error.log.42.gz:[Sun Dec 13 13:50:57 2015] [error] [client 54.201.251.33] Invalid URI in request GET /../../ratings.html HTTP/1.1
/var/log/apache2/error.log.42.gz:[Sun Dec 13 13:51:01 2015] [error] [client 54.201.251.33] Invalid URI in request GET /../../index.html HTTP/1.1
The Apache server blocked all the above attacks.
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.