1 Readings, Assignments, Labs, and ToDoIndex

Fill in your Course Evaluation Survey for this course. Only nine questions! Closes April 14.
Read (at least) these things (All The Words):
- Week 11 Notes HTML - this file - ** Read All The Words **
- Unix/Linux system logging, log files, kernel messages
- Delayed and Repeated Scheduled Execution - at, cron, and crontab
- Users and Groups - /etc/passwd, /etc/group, su, sudo, chsh, useradd, gpasswd, etc.
- List of Commands
From “Unix for Mac OS X Users” at lynda.com - more to come
Read (All The Words), Do, and save (not for hand in)
- Fedora 12 Installation in VMware: Lab Worksheet #07 PDF
  - Installing and Configuring VMware Tools for Fedora 12
  - CST8207 Frequently Asked Questions
  - Have your instructor check you off on the installation using the five points on the last page of the worksheet.
- Lab Worksheet #08 PDF - chmod, umask, permissions
- Lab Worksheet #11 PDF - user and group management
Read (All The Words), Do, and then Submit via Blackboard:
- optional BONUS VIM assignment: Assignment #06 HTML (optional)
- optional BONUS Midterm#2 assignment: Assignment #09 HTML (optional)
- Assignment #10 HTML - processes, syslog, crontab, at, Fedora 12
- Assignment #11 HTML - user and group management (Megadeth Project)
Write down the dates of your Final Exams from the Course Home Page.

2 From the Class Notes link on the Course Home PageIndex

Review last week. Did you do everything assigned last week?
Do your Fedora 12 install using Lab Worksheet #07 PDF
Review midterm test results from last week in Week 10 Notes HTML.
- review minimal permissions from Lab Worksheet #08 HTML
Unix/Linux Command Reference

3 From the Classroom Whiteboard/ChalkboardIndex

Your in-class notes go here.
Fill in your Course Evaluation Survey for this course. Only nine questions! Closes April 14.
- Sun Mar 24: Expected 90 responses, received 49 54%
- Read Last Term’s Course Evaluations
Reading man page SYNOPSIS lines
- pay strict attention to the order of the words
Command options that take following values cannot be split
- e.g. head -n 10, find -name foo, or usermod -d /home/newdir
- you cannot insert other options between an option and its following value. These are WRONG:
- WRONG: head -n -v 10
- WRONG: find -name -L foo
- WRONG: usermod -d -m /home/newdir ...

4 Some CommandsIndex

Keep a notebook with a List of Commands in it.

5 Real Sysadmin WorkIndex

Senior sysadmin one-line solution:

find dir -type f -printf '%i\n' | xargs -L 1 -I'{}' find . -inum '{}' -delete

Finding things that are not symbolic links that have other write permissions:

find dir ! -type l -perm /o+w -ls

5.1 Linux takes over ChinaIndex

http://www.wired.com/wiredenterprise/2013/03/ubuntu-china/
- The British Linux company Canonical is teaming with the Chinese Ministry of Industry and Information Technology to create Ubuntu Kylin, a Linux distribution specifically for China.

5.2 Attacks on my home machineIndex

ns230365.ovh.net - - [20/Mar/2013:13:42:01 -0400] "GET //index.php?route=../../../../../../../../../../../../../../../../../../../../../../../..//proc/self/environ%0000 HTTP/1.1" 404 - "-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6"
ns230365.ovh.net - - [20/Mar/2013:13:42:01 -0400] "GET /cst8207/13w/notes//index.php?route=../../../../../../../../../../../../../../../../../../../../../../../..//proc/self/environ%0000 HTTP/1.1" 404 - "-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6"
ns230365.ovh.net - - [20/Mar/2013:13:42:06 -0400] "GET /cst8207/12f/notes//index.php?route=../../../../../../../../../../../../../../../../../../../../../../../..//proc/self/environ%0000 HTTP/1.1" 404 - "-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6"
ns230365.ovh.net - - [20/Mar/2013:13:42:23 -0400] "GET //index.php?route=../../../../../../../../../../../../../../../../../../../../../../../..//proc/self/environ%0000 HTTP/1.1" 404 - "-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6"
ns230365.ovh.net - - [20/Mar/2013:13:42:23 -0400] "GET /cst8207/13w/notes//index.php?route=../../../../../../../../../../../../../../../../../../../../../../../..//proc/self/environ%0000 HTTP/1.1" 404 - "-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6"
ns230365.ovh.net - - [20/Mar/2013:13:42:27 -0400] "GET /cst8207/12f/notes//index.php?route=../../../../../../../../../../../../../../../../../../../../../../../..//proc/self/environ%0000 HTTP/1.1" 404 - "-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6"
ns230365.ovh.net - - [20/Mar/2013:13:42:53 -0400] "GET //index.php?route=../../../../../../../../../../../../../../../../../../../../../../../..//proc/self/environ%0000 HTTP/1.1" 404 - "-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6"
ns230365.ovh.net - - [20/Mar/2013:13:42:53 -0400] "GET /cst8207/13w/notes//index.php?route=../../../../../../../../../../../../../../../../../../../../../../../..//proc/self/environ%0000 HTTP/1.1" 404 - "-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6"
ns230365.ovh.net - - [20/Mar/2013:13:43:40 -0400] "GET /cst8207/12f/notes//index.php?route=../../../../../../../../../../../../../../../../../../../../../../../..//proc/self/environ%0000 HTTP/1.1" 404 - "-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6"
ns230365.ovh.net - - [20/Mar/2013:13:50:46 -0400] "GET /cst8129/02f/notes//index.php?route=../../../../../../../../../../../../../../../../../../../../../../../..//proc/self/environ%0000 HTTP/1.1" 404 - "-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6"
ns230365.ovh.net - - [20/Mar/2013:15:40:12 -0400] "GET //index.php?route=../../../../../../../../../../../../../../../../../../../../../../../..//proc/self/environ%0000 HTTP/1.1" 404 - "-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6"
ns230365.ovh.net - - [20/Mar/2013:15:40:12 -0400] "GET /cst8207/12f/notes//index.php?route=../../../../../../../../../../../../../../../../../../../../../../../..//proc/self/environ%0000 HTTP/1.1" 404 - "-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6"

Author: 
| 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

CST8207 Week 11 Notes
system logs, syslog, scheduling with crontab, at

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

Winter 2013 - January to April 2013 - Updated 2013-05-08 21:01 EDT

1 Readings, Assignments, Labs, and ToDoIndex

2 From the Class Notes link on the Course Home PageIndex

3 From the Classroom Whiteboard/ChalkboardIndex

4 Some CommandsIndex

5 Real Sysadmin WorkIndex

5.1 Linux takes over ChinaIndex

5.2 Attacks on my home machineIndex

CST8207 Week 11 Notessystem logs, syslog, scheduling with crontab, at

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

Winter 2013 - January to April 2013 - Updated 2013-05-08 21:01 EDT

1 Readings, Assignments, Labs, and ToDoIndex

2 From the Class Notes link on the Course Home PageIndex

3 From the Classroom Whiteboard/ChalkboardIndex

4 Some CommandsIndex

5 Real Sysadmin WorkIndex

5.1 Linux takes over ChinaIndex

5.2 Attacks on my home machineIndex

CST8207 Week 11 Notes
system logs, syslog, scheduling with crontab, at