Slashdot Mirror

Popsikle writes "A Seattle Paper reports that 'Microsoft Corp. announced it has filed 15 lawsuits against alleged e-mail spammers in Washington state and the United Kingdom on Tuesday.' It states the tough anti-spam laws in UK and Washington allows ISP's to sue spammers. This could be a good test of the new anti-spam laws." There's coverage on CNN as well. Microsoft has picked a good venue for such a case.

LunarFox writes "Applied Digital Solutions has announced successful field trials of a prototype GPS device that can be implanted into humans. The device, which is internally rechargable, can wirelessly transmit location, movements and vital signs via the Internet, storing the info in a database. It's said to be the size of a pacemaker, but they intend to miniaturize it to one-tenth that size. You may recall this company as having designed the 'Digital Angel,' and 'Verichip,' a ricegrain-sized RFID chip like injectable pet tracking ID chips. This same company apparently made several denials in 2002 that their product(s) would be anything but externally worn. (like a wristwatch) Many other related links can be found at WorldNetDaily." On one hand the potential cool uses astound me, while the possibilty of abuse frightens me. A lot.

netfunk writes "Now that we've finished taking submissions for the Linux beta of America's Army, I've written up some thoughts on the process of choosing participants. There are some interesting statistics on what comprises a 'Linux gamer' and some rough guidelines on what kind of applicant made the cut vs. what kind went directly to the trashcan." A good read. Now let's hope not everyone starts saying they power their graphics with an old Voodoo2 card. That's been my edge for getting into beta tests for years, even after upgrading.

melorama writes "The NAB convention passed 2 weeks ago, and I'm surprised nobody has pointed out the really neat Solid State Video Camcorder that was unveiled by Panasonic. It seems a bit kludgy right now (it records onto a series of PCMCIA cards), but it definitely beats the klunky Avid/Ikegami Camcutter (aka Editcam) from several years back, which records onto a self-contained harddisk. This is certainly a blow to Sony, which is working on a camera acquisition system that uses a blue-laser optical disc (read: moving parts) technology."

DJSpray writes "I've written a review of three books about the Ruby programming language, available on my weblog here. The three books are Yukihiro Matsumoto's Ruby in a Nutshell from O'Reilly, Hal Fulton's The Ruby Way (Sams), and Programming Ruby: The Pragmatic Programmer's Guide by Dave Thomas and Andrew Hunt (Addison-Wesley). Note that the third book is available online here for those who prefer that sort of thing. Executive summary: while I have found several of the other O'Reilly Nutshell series books to be excellent, this one is riddled with errors, confusing writing, and omissions, and does not live up to O'Reilly's usual standards. Fulton's book is filled with good cookbook examples and well-written explanatory material, as well as solid tutorial examples, but it is not structured as a reference. The Pragmatic Programmer's book works well as a reference and covers language features in increasing depth, but with fewer examples. Ruby beginners may find that the latter two books actually complement each other nicely, while I can't recommend this edition of the Nutshell book at all."

bluephone writes "Gnome and Bitstream have released the final version of the Vera font family. Go get it, install them, and enjoy! They work for Windows and Mac users too!" Our earlier story.

Wee writes "Linux Server Hacks is not a book which will teach you system administration. In fact, if you aren't already familiar with how to set up and run Linux, this book will likely confuse you. It is also not a book which will teach you how to break into Linux servers. The word 'hack' in this case is not a pejorative. What LSH will do is show you how to fully tweak that Linux box you already run. It will show you new (and possibly better) ways to do the things you already do. The book will probably not make you a better admin, but it will almost certainly save you some time or give you at least one 'Why didn't I ever think of that?' head-scratcher." Read on for the rest of Wee's review. Linux Server Hacks author Rob Flickenger pages 221 (including index) publisher O'Reilly rating Very Good reviewer Wee ISBN 0596004613 summary 100 tips and tools useful for those who work with Linux servers (and workstations).

About the book LSH is not just about the Linux operating system, per se. Despite the title, it spends more time covering applications which can run on Linux than it does the Linux operating system itself. It is composed of 100 "hacks" all grouped together into like areas, such as "Monitoring" and "Networking". The style sort of reminded me of O'Reilly's Cookbook series, and I find it to be an easy format to read. Indeed, if the book was larger, it could have easily been called "The Linux Server Cookbook."

After a somewhat cheesy forward by ESR and a recognizably standard O'Reilly preface, LSH starts out the hacking with a section called "Server Basics," and it's here that most of the Linux-specific tips are. You get to learn how to pass args to LILO, stroll through /proc, tweak the Linux kernel, play with hdparm and so forth. This chapter left me thinking that this was all stuff every admin should know, and not much of it was new to me (if you've used Linux for more than a couple years you probably won't find much here that you haven't at least heard about before). If you are new to Linux however, then this chapter will be valuable even if you stop reading the book right at chapter two.

If the book had to be divided into two parts, the first chapter would be titled "Part 1: Linux the OS." The balance of the book would then be called "Part 2: Linux Applications." Subsequent chapters each tackle one area of services or applications that run on Linux, such as CVS or rsync or ssh, and it's very easy to find something interesting purely by looking through the table of contents. The book's grouping of hacks into like topics helps, I think, because you can easily pick out what you want to see more of without having to wade through that which you don't find terribly interesting. For example, if you only deal with your personal Linux workstation, then you can easily disregard the "Information Servers" chapter without missing other valuable content. I personally found the "Networking" and "Monitoring" chapters to be the most useful. The "Backups" chapter was interesting, the "Scripting" chapter not so much. Each chapter starts with a summary of what's to come, so if the table of contents isn't enough to find the good bits, then just reading those summaries can give you an idea of whether you'll find anything useful to you.

The book includes a fairly complete index, but I didn't use it very much. I found the table of contents, with its list of each hack's title, to be useful enough. I suspect that when I pick the book up a couple months from now looking for something I had read about I'll get more use out of the index.

What's to like

As I mentioned above, the book is very easy to read. Flickenger has a "conversational" writing style I found easy to parse. If you hang out with Linux geeks very much, you'll recognize his way of communicating and easily assimilate what he has to say. His advice is sound, his skill level high (the same can be said for the other contributors as well). The book's layout and organization made it easy to find specifics and will ensure that it gets used as a reference later on.

You might be wondering about the code samples in this book: there are a lot of them. I didn't check, but I think each hack had at least one CLI listing or bit of example code. This made the book much more valuable than if it simply told you want to do; "seeing" the hack in action helped tremendously. In fact, I'd have felt disappointed if Flickenger hadn't included as many examples as he did. Most of the code is Perl, with some shell mixed in. The example code is well written and properly placed, so if you don't know Perl or shell you'll still be able to make use of the hack.

Each hack can stand on its own. This makes the book easy to read, and ensures its place as a reference. I didn't read the book sequentially at first, but I went through the whole thing regardless. Some hacks refer to other hacks, and I found myself reading the book as if it was hypertext, as is mentioned in the preface. Again, this also means less time spent reading that which you already know (or find boring) and more time spent thinking about something more useful.

The book is distribution-agnostic. I couldn't find anything that would upset a Debian user or would flummox a Mandrake fan. While this might have more to do with the bulk of the hacks being on the application level, I found the lack of an axe to grind refreshing nonetheless.

The book doesn't assume l33t-ness nor coddle the reader. It assumes you know your stuff and are a professional, and in doing so finds its voice rather well. This gave me a sense of admiration for the author and allowed me to absorb the knowledge being imparted with ease.

Although not specifically about the book, O'Reilly has set up a website devoted to their "Hacks" series of books. Users can send in their own hacks, which helps flesh out the content in the print edition.

What could be better

ESR's forward, titled "How to Become a Hacker," was just silly. The forward added nothing to the book, and I find the whole "zen of hacking" schtick tiresome after only a short while. Yes, "hack" is a cool word, but one which easily suffers from overuse: it suffers a lot in ESR's forward. The forward also contains a plug for ESR's book, which I thought was somewhat tacky.

LILO is referred to in several places, but there is not a single mention of GRUB. Where the boot loader was being discussed, an "If you use GRUB, you'd want to do it this way..." aside would have been welcome.

The "Information Servers" chapter is very large, but only deals with BIND 9, Apache and MySQL. If you don't work with any of these three, then fully one quarter of the book will be useless to you. I would have really liked to see mail servers (especially Postfix and Qmail) mentioned, and including tweaks for an ftp daemon would have made the book that much more valuable. I would have also liked to see sshd covered; the book contains only ssh client hacks. Finally, a hack or three about PostgreSQL would have been nice.

The "Scripting" chapter could have been replaced with a "Security" chapter. There are only 4 scripting hacks, and they aren't all that useful. Although the book has a security-conscious mindset running throughout it, I felt the lack of a section devoted specifically to security was a glaring omission. In fact, I almost didn't buy the book when I noticed that the table of contents didn't list a security chapter. It was only after reading a hack or two that I could see security was going to be mentioned.

Another area I expected to see was one with hacks involving package management. A whole chapter dealing with this topic would have certainly been welcome to users of Red Hat, SuSE, et al. I suspect that such a chapter might have broken an unwritten editorial rule about remaining distribution neutral, however. And Debian users would have found anything beyond an apt-get one-liner superfluous, so I can forgive the "omission."

Although the title of the book is "Linux Server Hacks," someone using Linux as a workstation would also find the book helpful. For example, Flickenger includes two hacks on burning CDs, a hack on displaying the load average in the title bar of an xterm window, and so on. I got the impression that the server-centric focus wandered into desktop land quite a bit. Because of this, I thought that some hacks involving window managers should have been included. I've tweaked vnc to run blackbox on more than one occasion and expected to see things like that mentioned. This is a niggling complaint, however.

I found myself wishing the book was longer. At US$24.95 the price was right, but I would have rather paid US$34.95 for 150 total hacks.

Finally, the book looked somewhat rushed. There were more than a couple formatting errors (typeset characters visible, etc) sprinkled throughout, and all the code examples were unindented; it was as if all the tabs were stripped out by the printer. While the lack of indenting might confuse those who don't know Perl or shell, the only "real" consequence of this is that the lack of tabs in the makefile examples on pages 27 and 28 prevent them from working.

Summary

Based on this review, it might seem that the bad outweighs the good where Linux Server hacks is concerned. I don't think this is the case, and I would caution anyone against taking that view (rather, I'd have them glance through the book at the bookstore before deciding not to buy it). I think it should be noted that given the usually high quality of O'Reilly titles, it's far easier to spot what could be better than what is likeable. Like the old saying goes, nobody notices a clean kitchen unless it isn't.

None of the "bad" things would keep me from recommending this book, and I found Linux Server Hacks to be a very useful -- both as a future reference and as "thumb through while waiting for the train" sort of read. There's not much in it which is "new", and most of the hacks would border on common sense for the seasoned sysadmin (although I'd be willing to be that even the most grizzled admin would find something new or interesting). Indeed, nearly all the information in the book can probably be found on the web somewhere. It is nice, however, to have everything collected in one place and organized into specific groups. Linux Server Hacks would make a good addition to the bookshelf of anyone, regardless of their skill level, who finds themself administering a Linux machine, be it a server or workstation.

Table of contents

1. How to Become a Hacker
2. Preface

1. Server Basics
2. Revision Control
3. Backups
4. Networking
5. Monitoring
6. SSH
7. Scripting
8. Information Servers

You can purchase Linux Server Hacks from bn.com. Slashdot welcomes readers' book reviews -- to see your own review here, read the book review guidelines, then visit the submission page.

tinrib writes "New Scientist reports that a new semiconductor-based technique for entangling multiple electrons could mark a significant step towards the development the first fully-functional quantum computer. The new technique involves using electrons rather than the more traditional photons and ions, and so far they have managed to entangle three electrons. "

salimfadhley writes "BBC Radio 4's current affairs program 'Analysis' is reporting [realaudio] [txt transcript] on emerging evidence that computers have harmed, rather than helped educational progress. There is still much debate among even the most enthusiastic supporters of schools technology about how computers should best be used. Despite record investment in computers in the USA and UK, recent studies (not the ones funded by educational software companies) have shown a significant drop in core subjects (Math, English) in schools that place strong emphasis on Information Technology. Evidence also suggests that whilst information technology has great potential in the classroom, teachers have not yet found better use for computers than as a big library. Very few schools have been able to use the new technology for cultural exchange, or to build practical educational networks with other schools. Teachers do not know whether computers should be seen as an exciting but peripheral educational 'accessory', or if computers can actually be used to solve the most pressing problems of literacy and numeracy - the sorts of things that get kids through exams." The Economist had a similar article a month or two back, about Israeli schools that had similar results, along with an interesting comparison between how people see computers now, and how people in the early 20th century saw film strips in the classroom.

dfelznic writes "There is a new wardriving utlity for Mac OS X 10.2 that can put the AirPort card into monitor mode and collect and crack WEP-enabled 802.11b networks. The application is KisMAC and it relies on the Viha driver to put the AirPort card into monitor mode. Both the application and the driver are in beta."

CoolVibe asks: "Remember that project called 5dwm? It was supposed to give us free Unix users a Magic Desktop clone. The project seems to have died. What happened to it? Are there any mirrors? As far as I can remember, this project wasn't open source. Too bad, because if it was, we would have a MD clone. Anyone who remembers working on a SGI machine (I used to use an O2) probably has fond memories of the Magic Desktop for IRIX. If anyone from SGI is listening, how about porting that fantastic piece of work to Linux and the *BSD's?"

thisisvinod writes "Frustrated with the lack of efficient project monitoring features in MS Project 2000, I was searching on the web for something that would suit my needs. I want a tool that would be browser-based, which will allow the PM to delegate tasks to others, against which they can mark the "effort" spent on the task (as hours/minutes), not percentage complete. Along with that, features that would allow creating of tracking reports, sending of email notifications and would also provide integration with empirical data would be quite nice. Any ideas on which tool would provide all this? And I really do think that most project management tools fall drastically short of one thing or another - MS Project is beautiful, but seriously flawed in the monitoring business. I'm sure other Slashdot readers have faced similar problems, and might have good solutions." Update: 07/30 2pm EDT by C : For the curious, Ask Slashdot last tackled this issue in this Linux-specific article, and discussed web-based versions, here. It's been 2 years, any changes?

ayden asks: "Now that the universe has conspired to keep me unemployed for the foreseeable future, I'm taking the time to fill in the gaps in my Babylon 5 collection thanks to the SCI-FI channel. I'm frustrated the linear nature video tape and the problems associated with recording directly from broadcast to tape. It occurs to me that there has to be a better way. I've thought about using my ATI All In Wonder Radeon to record the program directly to my hard drive and editing the resulting file to remove commercials. Should I then record the file to video tape? Or would it be better to make a Video CD I could play back on my DVD player? Are there other options should I consider? How are people archiving shows from their Personal Video Recorders? What techniques are people using to accomplish these tasks?"

pstreck writes "Red Hat watch out! Caldera, Conectiva, SuSE and Turbolinux have made good on their promise and United Linux is here! According to their website 'United Linux is a standards-based Linux operating system targeted at the business user. It is developed, marketed and sold by an experienced partnership of Linux companies.'" I just don't get it I guess, it just seems like there are already so many standards.

BluKnight writes "This guy hacked his camera to his speedometer, and ended up taking a picture EVERY MILE during a trip across the US. Kodak has the results (Flash in use!) of this venture. For my next hack, I'm going to interface to my digital camera to take a picture every time I blink -- I'll never miss what I'm seeing again!" The best part is the fact that he stopped every 36 miles to swap film rolls. Sad thing is, I understand this. (I still love film) The interactive map is -really- well done, but requires flash...

SilverStr writes "Looks like we may be learning more about DCS1000( AKA: Carnavore). Privacy advocates have won another round in their fight to gain access to more information about the FBI's Carnivore e-mail surveillance system."

phebz23 writes "News.com is reporting that 25 more states (even Washington!) are rallying behind the previous 9 to prevent Judge Kollar-Kotelly from dismissing the case on the grounds that the states should not have say in antitrust policy which is opposite of Microsoft's motion. They cite the Clayton Act, which grants them the authority to continue the case." Important to note that the states say: "even when the federal government has proposed to settle a case. Congress has granted the states clear authority to proceed independently under Section 16, despite the fact that the federal government has chosen not to act, has proposed to settle a case, has in fact settled a case, or has taken the matter to trial."

robstah writes: "Vintage Alpha based systems, such as the DECstation are often available going cheap at auctions or free from a skip as companies 'upgrade' to PCs. As many goverments now want to prevent computers from ending up in landfill one solution is for us geeks to recycle. How? Installing Debian of course. Debian Planet has a great article on installing Debian on vintage Alphas."

ctrimble asks: "I'm the acquisitions editor for a technical publishing company (not the one with the animals, but we have had six of our books reviewed favourably, here on Slashdot) and part of my job is to determine what books my company should publish. This consists, mainly, of me sitting in my apartment eating peanut butter sandwiches, reading Slashdot, and writing perl scripts that generate titles in a Madlibs type fashion: "Hacking Ruby for Midgets" (forthcoming in July). Unfortunately, there's a bit of an impedance mismatch between my methodology and filling the needs of the programming community. Market research is tough to do in tech books since you need to forcast about a year in advance. So, let me pose the question to you -- what kind of books do you want? What spots do you see as needing to be filled? For that matter, do you even want dead-tree books, or are eBooks and/or online documentation sufficient?"

PM4RK5 asks: "Today in computer science 3, I was plugging away at compiling a string class in Borland C++ (version 3.x), and came across a glaring problem, in terms of compiler problems, not source problems, as I had successfully compiled the same source code earlier using GCC on Linux. Now we're looking at using DJGPP as it uses GCC/G++ and has a comparable IDE (RHIDE) to the Borland IDE, even though some features aren't available yet. However, before we use this on every computer, are there any better GCC-based IDE's and/or compilers for the DOS platform? Maybe any that support the Win32 GUI? (for those of us bold enough to try). I have to admit, I much prefer developing on a *NIX platform, but school computers are limited to Windows/DOS. Even if there aren't any better IDE's, it will still be nice to have a better compiler on hand with GCC and RHIDE. Any suggestions would be appreciated."

rkischuk writes: "As an alternative to cable modem and DSL, Earthlink is launching "High Speed Internet Fixed Wireless Access". You lock a 14" square dish onto your home, and all that comes inside is the network cable that connects directly to your NIC. The connection is transmitted over radio waves, probably to transmitters mounted on local towers. Service seems comparable to DSL in both price ($42.95 / month) and speed (1.5 Mbps downstream, 128 Kbps upstream). No idea on the latency. Service is currently only available for pre-order in the Atlanta area. This seems to finally get the behemoth cable and phone companies from trying to monopolize such services, but brings the wireless providers into the mix (it's probably their cell-phone towers)."