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

1. Week 12 Notes HTML – this file – Read All The Words
2. Shell Control Structures – if, then, else, test, [...], shift, while, do, done
3. Shell Script Problems – arithmetic, syntax, test, boolean, etc.
4. Linux and Sysadmin News in the World
5. List of Commands You Should Know – keep a notebook!
6. Video Tutorials on Lynda.com – tagged by week number

Take Notes in Class

1.2 Assignments this weekIndex

Reminder: There are now two quizzes that you need to complete on Blackboard as part of your term Quiz mark. A third quiz will be posted before the Final Exam. The Quizzes are not optional.

Check the due date for each assignment and put a reminder in your agenda, calendar, and digital assistant.

• Read All The Words, Do, and then Submit via Blackboard:
  • Bonus (optional) Assignment #04 HTML – the VIM text editor
  • Bonus (optional) Assignment #09 HTML – Midterm #2 corrections
    • There is 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 #10 HTML – tar, processes, syslog, crontab, at, mail, shell script
  • Really do Read All The Words. You don’t get a second chance to get it right.

1.3 Lab work this weekIndex

• Assignment #10 HTML – tar, processes, syslog, crontab, at, mail, shell script
• Bonus (optional): Read The VI (VIM) Text Editor and optionally do the bonus Assignment #04 HTML.
• Bonus (optional): Complete bonus Assignment #09 HTML about Midterm #2
  • There is 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. Do not overwrite your question file with the output of the checking program.

1.4 Upcoming testsIndex

Read the Test Instructions (all the words) before all your tests and exams.

• Final Exam: 8am to 11am (three hours) on December 19 in two rooms T117/T119
  • Three Hours! Take a bathroom break before you start the exam.
  • The final exam emphasizes material after the second midterm test, but it covers the whole course and therefore includes material from all the practice question sets.
  • Take a bathroom break before you sit down for three hours!

3.1 Finding world-writable files in your accountIndex

Don’t create files or directories that anyone (“other”) can write, except the required ones in the Assignment #08 HTML head directory!

• To learn how to find these world-writable files in your account, look for the text world-writable in all the course notes.
• To search the course notes, re-read Items 7 and 8 in section 4.4 of Assignment #05 HTML. See also the examples in the web notes on finding files in the Week 03 Notes HTML.
• You will be able to identify which course notes web page you should read to find out how to find world-writable files.

3.2 Attacks on the Course Linux ServerIndex

• Count the attacks: fgrep -c "refused connect" /var/log/auth.log
• Another way to count the lines (less efficient): fgrep "refused connect" /var/log/auth.log | wc
• See the current list of evil host IPs: less /etc/hosts.evil

Read All The Words