KLUG Weekly Meeting Notes

Tuesday, April 26, 2005



Presented by Bruce Smith

Bruce Smith used his Toshiba laptop running SuSE Pro v9.3 with
the KLUG InFocus SVGA projector to reveal the power of the
Linux CLI. He worked from the terminal window of the Gnome
Desktop to give us a live demonstration. There were many good
questions addressed and helpful comments exchanged.

Bruce started by showing and telling us about BASH. This is
also known as the GNU Bourne Again Shell. He went through
the basic commands that are needed to navigate Linux without a
Graphical User Interface. Originally Linux had no GUI and the
CLI was where it all happened. We saw how to look at the "man
pages" to find out the command syntax and switch options. If
you want to see the commands you type man –k and they appear
on your screen. Bruce’s laptop only had 2,600 commands in his
CLI $PATH available. WOW!

He then discussed the dynamics of alias, pipe, more, less, type,
jobs, tar, su, echo $PATH, find, grep, which, and others. Unless
we were going to sit there jabbering until Midnight… Thankfully,
Bruce ended the presentation after a mere two hours. We barely
got past the basics of the extremely powerful Linux CLI.


BASH (GNU Bourne Again Shell)

The Linux Documentation Project [Manual Pages]

Linux Command Line Tutorials for Newbies

Learn the Linux Command Line

(20 Linux Enthusiasts Attending)


Bruce shows KLUG folks the command line. Posted by Hello

Tuesday, April 19, 2005



Presented by Eric Beversluis

Eric thoroughly reviewed Thomas Greene's new book
"Computer Security for the Home and Small Office."
Published by Apress in 2004, the book sells for $39.99.
Eric used his Sony VAIO laptop running Mandrake Linux,
OpenOffice v2.0 Presentations, and the KLUG InFocus
SVGA projector to make this presentation .

Eric’s presentation can be found at:

Tom Greene covers cybercrime, computer, and network
security for The Register (www.the register.co.uk).
This is an online journal whose motto is "Biting
the Hand that Feeds IT". He presents a wide-ranging,
practical treatment of his topic, leading to his
concluding chapter, "Trust Nothing, Fear Nothing."
Constantly lurking in the background and occasionally
bursting to the foreground are the visions of Orwell's
"1984" and Kafka's "The Trial" as Greene considers not
only the risks from "script kiddies" and hackers, but
also from Big Business and Big Government.

Computer Security for the Home and Small Office
by Thomas C. Greene

Chapter 1 - The Dark Side
Chapter 2 - Vectors
Chapter 3 – Social Engineering
Chapter 4 - From Newbie to Power User
Chapter 5 - Treasure Hunt
Chapter 6 - Open Source Escape Hatch
Chapter 7 - Trust Nothing, Fear Nothing
Appendix A - Glossary
Appendix B - Procedure, Processes, and Ports
Appendix C – Online Resources

(19 Linux Enthusiasts Attending)
[click on the pictures below to enlarge them]


Presentation Summary Posted by Hello


Eric Presents Computer Security Info Posted by Hello

Tuesday, April 12, 2005



Presented by Adam Williams

For details of Adam's presentation see:

OpenLDAP Software is an open source implementation of the
Lightweight Directory Access Protocol. In a continuing
series of presentations focused at Linux network service
administration, Adam used his laptop running SuSE Pro v9.2
and OpenOffice's Presentations software with the KLUG InFocus
SVGA projector to give us an outstanding lesson in LDAP
administration and advanced topics. Adam fielded questions
during and after the presentation. He prepared 44 slides.

The three areas of discussion included –

Performance Tuning:
* Configuring multiple caches
Set cache sizes
* BDB database utilities (Sleepycat)
db stat, db archive, db recover, & db checkpoint
The two main database files are dn2is.bdb & id2entry.bdb.

Access Control :
* Access Control Info (ACI)
* Access Control List (ACL)
Advantages and disadvantages were discussed & how it works
Security Strength Factor (SSF)

Conditional Replication & Back-LDAP:
* syncrepl application
Replication can include a filter
* LDAP’s virtual backend
Used for mangling Dit data or joining one Dit into another

(22 Linux Enthusiasts Attending)

[Thanks to Robert G. Brown for providing the two pictures below.]


LDAP 106: Admin & Advanced Topics Posted by Hello


Adam Explains Checkpoint Posted by Hello

Tuesday, April 05, 2005



Tonight was KLUG’s April General Assistance Meeting.
Only one install request was received for this month.
The request was for a dual booting SuSE 9.2 Pro and

Microsoft Windows XP Pro desktop workstation.

Andrew Thompson, KLUG’s kind Installmaster helped
Tom to get SuSE 9.2 Pro installed. The target PC
had an ABIT NF7 motherboard, AMD Athlon (2 GHz)

XP Mobile CPU, 1 Gb of RAM, two 80 Gb Western
Digital hard drives, a DVD reader, a DVD writer,
and an nVidia Fx5900xt video adapter with 128 Mb
of RAM. YaST performed all the install tasks with
practically no need for human intervention. There
were four package errors encountered. udev, evms-gui,
i4l-isdnlog, and ed packages failed install.

After the initial install an update was performed and
four more packages failed to install. Andrew showed
Tom how to manually install these from the RPM’s. No
clue why these errors were encountered. Tom also saw
how to set up the root password and a user name with
a login password. It was noted that you type in the
user name "root" when the SuSE 9.2 GUI first boots.

Tom will get more guidance from Andrew over the next
few weeks by e-mail and there is always help available
from the KLUG mailing lists. He was shown the KLUG
technical library and told about other tech support
information sources.

While the install was going on a group gathered in the
back of the room to answer general newbie questions.
Questions and answers were flying at a brisk pace.

(10 Linux enthusiasts attending)


KLUG Installmaster helps Tom Install SuSE 9.2 Pro Posted by Hello


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