People “in the know” understand that Linux is
perfectly appropriate for the enterprise. However,
there are many circles that still think of
Linux as a hobbyist project. Consultants such
as myself face an up-hill battle when pushing
Linux-based solutions. I believe our job is made
more difficult when one of the few Linux-focused
periodicals actually to make it to the local magazine
racks prominently displays the powerful operating
system's ability to act as a Web-based cat feeder.
I appreciated the article, but did it have to go on
Are you trying to get us in trouble with the “where's the fun” guy? Fun technology attracts the new developers and projects, and non-fun technology dries up and blows away. —Ed.
As a subscriber of Linux Journal since 1994, I have been following all the great pictures of newborns, who get their first introduction to Linux on the pages of your great publication. When my son Patrick arrived on October 23, 2004, I knew I had to start him off with penguins as soon as possible. So, on his first-month birthday, my wife snapped this picture to show that a new Linux hacker is on his way to help in the Open Source community.
As I am currently hacking my way through this
myself...I would really like to see an article on
building software (compiling) for the AMD64. There
are certain pointer symantics and sizing issues that
need to be dealt with, and I have yet to find a good
source on “porting” to 64 bits.
There's a bunch of 64-bit wisdom scattered around the Net and in project source code. We'll look for someone to write the article for you. —Ed.
In the January 2005 issue, you have a nice review of the HP laptop. I do not mean to be too critical, but it seems to me that you have given us half a loaf. We do not buy such things in a vacuum. There are other Linux boxes out there, such as from Emperor or even Lindows, Wal-Mart, sub300 (ugh), etc.
It would help me a great deal if a review would
describe not only the object under discussion, but also
include some comments about whether it is “better
than”, in almost any way you choose to evaluate it,
some other machine. Is is a better buy than the
equivalent box from Emperor? Where does it fit in,
in the long scale of very cheap to very expensive,
versus quality. I think the reader would be better
served with such information, even if it is only your
best guess. Because (I hope) you have a lot better
data base to go on than I do.
Many thanks for a good magazine.
Thanks for the heads up on the DRM fiasco for HDTV. I
believe pcHDTV is now shipping version 3000 and
will continue to do so until the 30th of June, 2005,
without the DRM flag. Can you confirm this or do you
already have confirmation of this?
Kevin R. Battersby
Watch for an update item on this next issue. —Ed.
My son Graeme is quite a Linux fanatic. One of his good friends made him these mittens for Christmas this year. I thought you might want to see this upcoming fashion trend for what every “cold” Linux user should be wearing.
After hinting for the last four and a half years of our marriage my wife finally conceded, and Charlie is the result. Immediately upon agreeing we would take the pup, my wife went to work using some fabric endowed with a Tux look-alike and made a few goodies for our new puppy. Hopefully this finds you the editor in good health, as well as the rest of the LJ staff. Here is to what may become of Linux in 2005, cheers!
Thanks for your article in the December 2004 issue of Linux Journal about aggregating feeds, I really enjoyed it. It's probably months since you wrote the article, but I've only just got around to reading it over the Xmas break! I don't know Python, but managed to tinker with your code and get my own feeds page going (snowfrog.net/myfeeds.html).
I'm getting an error when I syndicate some sites, such as safari.oreilly.com/rss, and I don't know how to fix it. Any pointers? Obviously, it involves stripping out non-ASCII chars, or changing the codec to Unicode, but I don't know how to do that (yet):
UnicodeEncodeError: 'ascii' codec can't encode character u'\xae' in position 66: ordinal not in range(128)
This occurs when (for example) I do a
Thanks for any help you can give.
Reuven Lerner replies: I'm glad that you enjoyed the article! And yes, I normally write columns about 3–4 months before they are printed—but I do remember writing about feedparser and aggregating feeds.
Hmm, I'm a bit surprised that something is choking on Unicode characters. That shouldn't happen, should it? And for feedparser to be choking is even weirder, because I was sure that it could handle Unicode just fine. But the problem isn't the Unicode string. Rather, it has to do with the fact that the Unicode string isn't being translated into a non-ASCII codec, which is what you guessed. For example, consider the following:
>>> print u'\xae' Traceback (most recent call last): File "<stdin>", line 1, in ? UnicodeEncodeError: 'ascii' codec can't encode character u'\xae' in position 0: ordinal not in range(128) >>> print u'\xae'.encode('utf-8') ®
So you (or the feedparser source; it's not clear if the problem is in code that you wrote or in the feedparser code) probably should include a call to encode, indicating the resulting codec.
I haven't read it very carefully, but the feedparser documentation includes a description of encoding systems. It might well be that you're being bitten by something there (www.feedparser.org/docs/character-encoding.html). I hope that this helps! Please let me know if you have any further questions.
I read you rolled out GPG for everybody at SSC.
How about adding the key fingerprints in the journal
itself as an example to give validity to the keys.
You list all the collaborators on page 4 with the
e-mail addresses, this would be a nice spot to add
The only drawback would be the space it takes.
Better: create a master key, sign all the keys with
the master, and print the fingerprint of the master.
Keep up the good work with the magazine, I am now the owner of 50cm
of magazines. And my best wishes for 2005 to you and the whole team.
Great idea. We'll ask our IS department to create a company master key and sign all our keys with it. —Ed.
I have been using Linux since 1998 and Red Hat 5.2. My son has liked penguins since 1996. He has quite a collection of stuffed penguins including a few Tuxes. Please excuse the occasional puffin. Here he is pictured with our ThinkPad running Fedora 3.
I appreciate Marcel Gagné and his monthly column, particularly because it is the only one in LJ that I can consistently understand. But, why does he feel it necessary (or useful) to repeat the same five-step build process for every piece of software? It's only useful if it compiles with no problems—and we all know that never happens. Anyone capable of hunting down dependencies certainly knows the build process.
I have a proposal for Marcel and Francois: how about a column devoted
specifically to the compile process? I am particularly interested in
knowing about common dependency issues, common paths to specify, and why
and how to install dependencies in a different directory so they can
coexist with other, default versions of the same software. I am
running Xandros 2.0, which uses an older version of KDE (and many other
things). I would love to be able to install software that requires KDE
3.3, but upgrading to that would certainly wreck my OS. There must be a
way to install dependencies in parallel, with the more advanced versions
to be used only by the programs that I specifically point to them, but I
have no idea how to go about this.
I was looking in the local rag, the New York Daily News and saw this in the editorial column:
Microsoft Windows is a terrible product. If Windows were a commercial aircraft, the FAA would ground it. If it were a prescription drug, the FDA would ban it. If it were a horse, you'd shoot it. Every new Windows release is miles worse than the one before it. Every fresh patch and tweak crashes your system more and more desperately. Microsoft Windows wants to kill you.
But yet we're all stuck with it. We all depend on it, completely and absolutely and utterly.
So, I wrote a reply to the editor:
What to do about “broken” Windows?
Plenty. There is a whole family of free operating systems such as GNU/Linux and BSD available to all on the Internet or from your local computer users group.
Try Knoppix on CD. It comes with everything you need including word processing and e-mail software, real games, self-installing network software and you don't even have to install it on your computer.
Microsoft does not want you to know about that.
Wonder why? It is simply better. Try it (www.knoppix.net).
The article “Linux VPN Technologies” [February 2005]
discusses IPSec and its availability in the 2.6 series
kernel. It states that FreeS/WAN is available in the
kernel, when in fact the 2.6 kernel uses a port of
the KAME IPSec stack (www.kame.net). The KAME
stack was originally developed for the BSD variants
and is very mature. The utilities for interacting
with this stack, called ipsec-tools, can be found at
ipsec-tools.sourceforge.net. I'm successfully
using the 2.6 IPSec stack for a custom wireless access
point using hostap. Thanks for the excellent work.
FreeS/WAN and OpenS/WAN were never official parts of the kernel; some distributions did include them. —Ed.
I have been a Linux advocate for many years and continue to marvel at the progress it has made. Several leaps have brought Linux much more into the mainstream of business and even home users in recent years.
It seems that many applications are not innovative, but just copies of other ideas from other platforms. While it is important that critical areas be filled with appropriate applications in order to make Linux viable for users, it is also important to innovate. That being said, will users move to Linux for the same applications that they can get on other systems? Probably, because of cost savings. But, more users would move faster to Linux if there are applications that are innovative.
I remember in the mid-1980s when a small company was able to capture nearly 25% of the PC market despite having more expensive products. A simple change to the user interface that used graphics in place of menus made all the difference.
So, as I flip thought the last several issues of
Linux Journal, I have yet to see many innovative
applications. As more people become interested in
Linux for its reliable and highly customizable
features, will there be an incentive to switch
other than cost? Without innovative applications,
it could relegate Linux to remain in the back office
in the hands of the techies.
Just before reading the latest issue [February 2005], I was thinking to myself that LJ really hasn't yet acknowledged that Novell is now one of the major players in the Linux world. And then there was your review of Novell Linux Desktop (which as I'm sure others have told you by now is NLD not NDS). As a longtime Novell user and a longtime Linux user I was happy that Novell took the steps it did. Like everyone else I was keeping my fingers crossed that they wouldn't screw up like they did when the acquired WordPerfect and sold UNIX to SCO. So far they haven't made any major blunders.
Initially, the emphasis was on a good server kernel to replace NetWare, which although still quite capable, isn't as good as Linux in many areas. Of course Novell just couldn't resist competing with Microsoft by pushing Linux on the desktop. NLD isn't bad, but it offers little advantage over any of the other distributions. Novell is positioning NLD as a business desktop.
In their rush to get NLD out the door, they didn't get all the pieces in place to integrate NLD into an existing Novell network, so most established NetWare shops aren't finding it very useful either. I don't even think ncpfs (needed to mount NetWare volumes) came installed by default. I know GroupWise didn't, even though they have a pretty good Linux version. Evolution 2 is the default mail program but none of the GroupWise hooks are working yet. Those are waiting on the next version of GroupWise due out mid-year. The reset of the integration part is waiting on Novell Open Enterprise Server (OES), now in beta. Supposedly, it will have a true NetWare client akin to the the Win32 client. Time will tell.
Novell is a major player in the Linux world now,
and we should accept that fact and work with
them. They are very open-minded right now and will
benefit from interaction with people that have been
around Linux a lot longer then they have. I'd encourage
you to attend Brainshare this year. Linus was there
last year. As always, LJ is great and continues to
get better. Thanks for the good work.
I used to be a subscriber to Linux Magazine until the Microsoft ads started appearing a few years ago. I was sickened and stunned. I stopped dead still in my tracks with feelings of anger and realizations of betrayal. I really used to look forward to the monthly delivery of LM, but I was left staggered and emotionally confused at the sight of Microsoft's ugly and sudden appearance. There was a sinister happiness about the ad, and it felt very much as if the magazine I was holding contained a plague that began infecting my hands. I could feel the hate and cruelty making its black way up both my arms...going for my soul...trying to turn me into its Golem. Even as the magazine slammed against the wall across the room, I still felt sick, and angry, and sad, and betrayed. It was a really tough day for me.
Linux Journal is the only Linux magazine I subscribe
to now. If something should happen to you guys...where else could I go?
My home office is in the basement of my Wisconsin home. It gets rather chilly here in the middle of the winter, so my wife surprised me with a blanket she made to help keep me warm as I use my Linux workstation.
A mid-winter kite flying event called “Kites on Ice” was held in Madison, Wisconsin on Lake Monona. My son captured this view of some penguin kites flying high above the snow and ice-covered lake.
I have been enjoying Linux Journal since Issue 36 (April 1997) and will continue for a long time to come (my subscription runs until February 2012. (I bought into the 100 issues for $100 offer a while back.) Keep up the good work. Linux forever!
May I interject a thought regarding the comments made
in the January 2005 LJ [Best of Technical Support,
“Distributing /etc/shadow”, p. 68]?
While possibly more than was originally requested, one
of the other options available instead of constantly
changing the root password would be to use the SecurID
system (and ACE Server) that is sold by RSA Security.
It gives you a variation on “one-time passwords”
and in a lot of cases can satisfy the MIL-Spec that
requires rotating the root passwords.
However, in practice, locking out the root password
and using sudo for everything (which can also use
SecurID) is a much smarter idea. It provides auditing
as a side benefit.
Michael C. Tiernan
Please put my vote in the “liked open access better” category. I subscribe to make Linux Journal possible and to have a hard copy in my hand every month. It doesn't bother me that someone else may be getting it free off the Web. I think that requiring a subscription to get full content is passing up the opportunity to provide a service. Let me give you an example.
I've been asked to do a piece for IEEE Software. So while researching past issues to find the appropriate tone for the audience, I found that there's a lot of good stuff there that I (and others like me) don't have access to because we don't get the subscription. As a result, we're less informed than we might be. Publications that do that may be protecting their copyrights and business model at the cost of their community being less informed. Even as a subscriber I'd be happier if the average Linux user was better informed.
The last time I checked, the European Linux magazines offered free access to content that was over a year old. If allowing access to older content (for some small value of “older”) will satisfy the original objectors, I can live with that.
I will keep my subscription whether you choose to
change the subscriber-only policy or keep it. In either
case, I get what I want and what I paid for. I think
that open Web access to content is a valuable extra
to me and the community.
Speaking only for myself
My wife and I returned from Antarctica in December 2004. You'll be happy to know that the penguin population is thriving and (at least while we were there) gentoos were the most populous distribution!
William E. Shotts
Photo of the month gets you a one-year subscription or a one-year extension. Photos to email@example.com.
I took this picture of my wife, Ja (center), and her two twin sisters, Apple (left) and Cherry (right), on Christmas Day 2004, in Rayong Thailand. The T-shirts were from the Picn*x 13 Linux picnic in Sunnyvale, California last August (donated by Google).
We were on nearby Koh Samed (Samed Island) the next day when the tsunami hit. Luckily, both Rayong and Koh Samed are in the Gulf of Thailand, not on the Bay of Bengal. We noticed nothing more than a 3–4 foot surf, slightly larger than normal.
I am very curious about the “Horrible Bug”
referenced in the diff -u section of the February
2005 Linux Journal. I have just purchased SuSE
Linux Professional, Release 9.2, which contains the
2.6.8 kernel. A description of the bug would help
to determine if my specific system would in any way
Zack Brown replies: The bug was with NFS. Entering a mounted NFS directory would result in an OOPS under the 2.6.8 Linux kernel. Only folks using NFS would experience a problem.
Regarding SuSE Pro 9.2, you can put your mind at ease, the fix is included. All Linux distributions, SuSE, Debian, Red Hat and the rest, apply various patches to their kernels before release. In fact, in recent days the kernel developers have come to rely on vendor patches more explicitly, as a crucial element of the stabilization process. The 2.6.8 kernel included in the SuSE Pro 9.2 release is not a “true” 2.6.8 kernel, it is more like a 2.6.9-rc2 kernel with further additions. One of these additions clears up the NFS oops problem found in the official 2.6.8 kernel.
I particularly enjoyed Chris McAvoy's article in the January 2005 issue entitled “How I Feed My Cats with Linux”. I do have one question though. He makes the point that the BASIC Stamp uses a nonstandard serial port and specifically points out that Parallax's method makes two-way communication difficult. This seems a valid reason for replacement, except that I can't find any instances in the sample code where two-way communication is actually used. Did I miss something? For the purpose of the given example, wouldn't the onboard serial suffice? I do appreciate that this is but one example of the possibilities of this kit and can see where two-way communication would be useful, just not in this case.
I would like to commend this article and ask for more like it, as I am interested in data acquisition and digital I/O controls for some future projects that I am planning, and currently LJ is my only link to the computer world until 2008. Which brings me to a final question for the subscription department. I am a longtime subscriber, but the last couple of years, I have been receiving my LJ while incarcerated in a California State prison, and I wonder, are there any other inmate subscribers? I've run into very few computer geeks like myself in prison, and not a single Linux enthusiast, so my curiosity is piqued.
Thanks to the entire LJ staff for their hard work in
putting out a fine publication.
Chris McAvoy replies: thanks for writing. You're right about not necessarily needing the MAX232 for one-way serial communication to the STAMP. Given the way we're using the STAMP, we could have just used the built-in serial port. That said, it was nice during testing to be able to run the DEBUG command in my PBASIC code, and see the output live on the console. If we used the built-in port, it would be more difficult to debug. Plus, the MAX232 kit is really slick, and relatively inexpensive.
Yes, there are other subscribers in prison, but we can't give out the exact number. —Ed.
The New Bedford Monthly Meeting of Friends met this second day of January 2005 and resolved to declare our recognition of the good that free software is doing in the world and to thank those who have shared the fruit of their labor.
We single out this activity for the following reasons.
That our Meeting uses these products for administrative purposes and that we hope to soon use them to help others. This is our thank-you note.
That those who are doing this work might better realize their own Light. We see Godliness in their actions and by drawing their attention to that Godliness may we let them feel it more strongly.
That people generally may know of and use this software and save their resources for other needs.
The society at large, and especially those who regulate, legislate, or adjudicate, may note the public good done by such sharing of intellectual property. Society should look kindly on this sharing, a sharing which its laws seem ill suited to promote.
In using the words free software we mean software which is put in the public domain or is released with conditions that ensure that any interested person may have, use, improve, and redistribute the software.
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- Server Hardening
- May 2016 Issue of Linux Journal
- EnterpriseDB's EDB Postgres Advanced Server and EDB Postgres Enterprise Manager
- The Humble Hacker?
- The Death of RoboVM
- The US Government and Open-Source Software
- BitTorrent Inc.'s Sync
- Open-Source Project Secretly Funded by CIA
- New Container Image Standard Promises More Portable Apps
- ACI Worldwide's UP Retail Payments
In modern computer systems, privacy and security are mandatory. However, connections from the outside over public networks automatically imply risks. One easily available solution to avoid eavesdroppers’ attempts is SSH. But, its wide adoption during the past 21 years has made it a target for attackers, so hardening your system properly is a must.
Additionally, in highly regulated markets, you must comply with specific operational requirements, proving that you conform to standards and even that you have included new mandatory authentication methods, such as two-factor authentication. In this ebook, I discuss SSH and how to configure and manage it to guarantee that your network is safe, your data is secure and that you comply with relevant regulations.Get the Guide