Oct 18 2001


                    LINUX NEWS
       Resources & Links From CramSession.com
            Thursday, October 18, 2001


TABLE OF CONTENTS

1) Sean’s Notes

2) Linux News

Mandrake Powered Super Cluster
Opinion: Why Computer Vendors Should Push Linux
Cramsession Redesigned
Linux Mag Names Evolution #1

3) Linux Resources

Red Hat Offers Migration Solutions
How to Tell if Your Linux Box Has Been Cracked
How Does SSH Work?
Using Apache's mod_rewrite
Programming... In PostScript?

4) App o’ the week

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1) Sean’s Notes

I was flipping through one of the trade rags that landed on my desk, when an ad for one of those certification bootcamp places caught my eye. It featured a typical dorky looking guy holding an MCSE certificate, flanked by a couple of scantily clad ladies. The general effect of the caption was that a certification will make you more attractive to employers and the ladies.

I find the current state of certifications disappointing. Training companies push them as the only way of getting a job. People desire the certifications, leading many to try to acquire the test questions in advance (otherwise known as braindumps). Then there are companies that provide the material, and ultimately, those that come the closest to the exam itself succeed. One exerts pressure on the other to make the certification process easier, and we end up with certifications that are meaningless because everyone has one, and they aren’t an indicator of competency anymore.

It would seem that the Linux community has been somewhat protected from this mess, even though there are several Linux certifications. In my humble opinion, it’s due to a few factors, the first being the relative obscurity of Linux. On the server end, it’s still the realm of the hardcore hacker, and picking those out of a pile of resumes is usually pretty easy. This will change as as Linux invades the desktop, though.

The second is quite subjective, and I’m sure many will disagree, but it’s harder to fool your way past a Unix interview. I find it pretty easy to judge someone’s Unix knowledge after talking with them for a little while, so certs don’t help out. Again, as Linux appears on more desktops, more entry level people will be needed, and this too will change.

The third is marketing. Microsoft pushes the MCSE as a way for HR departments to judge knowledge. Ditto Cisco, Oracle, and everyone else who offers a certification. They make the products, so they should be able to say who knows their stuff, right? Is Linus going to start stamping people as Linux- certified? I think not. So what’s out there?

From where I sit, there are three basic entry level certs for

Linux. We’ve got LPI, SAIR, and CompTIA.

LPI, the Linux Professional Institute, offers a basic certification that requires passing two exams. The subject matter is just what you’d expect, shell basics, scripting, compiling, X-Windows, networking, and security. There is work being done on a more advanced level, but right now it looks pretty basic. Unfortunately, the LPI group seems to be favouring absolute correctness over practicality. As a result, progress is slow. Judging by some of their web pages, much of the work is done by volunteers. If these folks could get properly funded, I’m sure they could create something that people would envy.

SAIR and GNU offer a handful of certifications. To get the basic Linux Certified Professional (LCP), you only have to pass one exam in either Installation & Configuration, or System Administration. Pass both, plus one each in networking and privacy (for a total of four) and you’re a Linux Certified Administrator (LCA). After that, you can add extra exams in specialty topics like Sendmail and Perl to become a Linux Certified Engineer (LCE), and eventually a Master LCE. I really like the progression available in this one, but I can’t help but notice that it’s targeted toward the server end of things. If SAIR were to add a desktop component, I think this would be a killer cert.

CompTIA is well known for their A+ certification, very popular in the desktop support area. They also have a handful of certs in the server and network path, and have recently introduced a Linux certification called “Linux+”. Like the LPI, this is a comprehensive certification, covering most aspects of installation of troubleshooting, including desktop issues. What I don’t like about this is that almost 20% of it is on hardware. I’ve heard good arguments for hardware being on there, but I still think it is overweighted. In CompTIA’s favour is the recognition they have. In certifications, this is everything.

So those are the basic three entry level certifications. Right now I’m not seeing employers asking for them, but I know that is going to change soon. As Linux moves into corporations, certified individuals will be needed. In my books, Linux+ is the one to have, only because of CompTIA’s recognition. SAIR looks like a great one to have if you want to show off your advanced knowledge that doesn’t appear on a resume.

Of course, Cramsession.com has study guides for all of these, and will be coming out with new guides as exams are developed. Good luck in your studies!

LPI: http://www.lpi.org/

SAIR: http://linuxcertification.com/

CompTIA: http://www.comptia.com/certification/linuxplus/

Long live the Penguin,

Sean swalberg@cramsession.com

Visit the Linux News Board at http://boards.brainbuzz.com/boards/vbt.asp?b2


2) Linux News


Mandrake Powered Super Cluster

A mere 385th in the world, but still a supercomputer. This one was built by HP using ePC’s (their model that isn’t made to be upgrade), and Mandrake Linux. Seems like their research group is getting some good use out of it too.

http://news.cnet.com/news/0-1003-200-7409795.html?tag=mn_hd


Opinion: Why Computer Vendors Should Push Linux

Sure, people like Dell found it hard to get machines preloaded with Linux out the door. Is simply counting the number of boxes sold a good indicator, though? This opinion piece looks at why vendors should still be selling Linux, even though the machines aren’t flying off the shelves.

http://www.linux.com/opinion/newsitem.phtml?sid=1&aid544


Cramsession Redesigned

If you’re not a regular on the Cramsession.com site, I encourage you to check in every so often. The site has undergone a redesign, and split off from Brainbuzz.com. They have over 200 study guides, lots of technical resources, and of course, the boards where lots of knowledgeable UNIX folk hang out.

http://www.cramsession.com


Linux Mag Names Evolution #1

Evolution, the mail client created by Ximian (the guys who make that cool GNOME desktop package) won the Linux Magazine’s “Best Graphical Email Client” earlier this month. High time to check it out!

http://www.ximian.com/about_us/press_center/press_releases/linuxmag_award.html


3) Linux Resources


Red Hat Offers Migration Solutions

This site surprised me when I looked at it. Not the articles on how Linux can save you money, but the whitepapers on migrating from Solaris, and porting Solaris code to Linux. This site is full of resources, but I can’t help but wonder if this is going to take Red Hat out of the sidelines, and into SUN’s crosshairs.

http://www.redhat.com/solutions/migration/


How to Tell if Your Linux Box Has Been Cracked

It’s everyone’s nightmare – script kiddies have taken over your system. Worse yet, you might not even know it! This article has some great tips on things to regularly do that will quickly spot an intrusion.

http://www.linuxworld.com/site-stories/2001/1012.cracked.html


How Does SSH Work?

“Don’t use Telnet, use SSH” is almost a mantra by now, but what is the reasoning behind the statement? he answer to this, along with how to actually use SSH, can be found here.

http://www.mandrakeuser.org/docs/secure/sssh.html


Using Apache’s mod_rewrite

mod_rewrite allows the server administrator to do fancy things with user’s requests, such as transparently change the page that gets viewed based on the user’s browser or the current time. There are a lot of situations where this module can be helpful, so as an addition to the documentation on apache.org, this site shows common problems, and the mod_rewrite solution.

http://www.engelschall.com/pw/apache/rewriteguide/


Programming… In PostScript?

PostScript is actually a powerful language. By knowing some of the language, troubleshooting printers can be made easier, plus you can jazz up printed output that’s been automatically generated. Some examples of postscript tricks include CD and Tape labels, and easy graph paper.

http://www.cs.indiana.edu/docproject/programming/postscript/postscr ipt.html


4) App o’ the week

A rootkit is a software package that a cracker will install that ensures that they can maintain ownership of your system, and that you won’t detect their intrusion. This software checks for the presence of various rootkits, and is small enough to fit on a bootable floppy or recovery CD.

http://www.chkrootkit.org/


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