Anonymous Hacker writes "I'm in a bit of a bind. My young teenage son is starting to get curious about computers, and in particular, programming. Now, I'm a long time kernel hacker (Linux, BSD and UNIX). I have no trouble handling some of the more obscure things in the kernel. But teaching is not something that I'm good at, by any means. Heck, I can't even write useful documentation for non-techies. So my question is: what's the best way to encourage his curiosity and enable him to learn? Now, I know there are folks out there with far better experience in this area than myself. I'd really appreciate any wisdom you can offer. I'd also be especially interested in what younger people think, in particular those who are currently in college or high school. I've shown my son some of the basics of the shell, the filesystem, and even how to do a 'Hello World' program in C. Yet, I have to wonder if this is the really the right approach. This was great when I was first learning things. And it still is for kernel hacking, and other things. But I'm concerned whether this will bore him, now that there's so much more available and much of this world is oriented towards point-n-click. What's the best way to for a young teen to get started in exploring this wonderful world of computers and learning how to program? In a *NIX environment, preferably." Whether or not you have suggestions for generating interest or teaching methods, there was probably something that first piqued your curiosity. It seems like a lot of people get into programming by just wondering how something works or what they can make it do. So, what caught your eye?

Ste sends along the cheery little story of Otto Moerbeek, one of the OpenBSD developers, who recently found and fixed a 33-year-old buffer overflow bug in Yacc. "But if the stack is at maximum size, this will overflow if an entry on the stack is larger than the 16 bytes leeway my malloc allows. In the case of of C++ it is 24 bytes, so a SEGV occurred. Funny thing is that I traced this back to Sixth Edition UNIX, released in 1975."

Theovon writes "I just built a high-end quad-core Linux PC dedicated to number-crunching. Its job is to sit in the corner with no keyboard, mouse, or monitor and do nothing but compute (genetic algorithms, neural nets, and other research). My issue is that I would like to have something like persistent terminal sessions. I've considered using Xvnc in a completely headless configuration (some useful documentation here, here, here, and here). However, for most of my uses, this is overkill. Total waste of memory and compute time. However, if I decided to run FPGA synthesis software under WINE, this will become necessary. Unfortunately, I can't quite figure out how to get persistent X11 session where I'm automatically logged in (or can stay logged in), while maintaining enough security that I don't mind opening the VNC port on my firewall (with a changed port number, of course). I'm also going to check out Xpra, but I've only just heard about it and have no idea how to use it. For the short term, the main need is just terminals. I'd like to be able to connect and see how something is going. One option is to just run things with nohup and then login and 'tail -f' to watch the log file. I've also heard of screen, but I'm unfamiliar with it. Have other Slashdot users encountered this situation? What did you use? What's hard, what's easy, and what works well?"

Ben Rothke writes "While Terminal Chaos should be shelved in the current events or business section of a bookstore, it could also be placed in the modern crime section. After reading it, one gets the impression that the state of air traffic today could only come due to criminal neglect or mischief. If one looks at pictures of airline flights from the 1960s, you will see well-dressed passengers enjoying their flight. In 2008, barely a day goes by without an incident of air rage, from irate passengers in the terminal, to those in the air causing flights to be diverted. Today's airline traveler considers it a near miracle if his flight arrives on time with his baggage." Keep reading for the rest of Ben's review.

melios writes "In a move that could help boost the scalability of Linux for grids and other advanced 64-bit multiprocessor applications, HP has released its Tru64 Unix Advanced File System (AdvFS) source code to the open source community. Source code, design documentation, and test suites for AdvFS are available on SourceForge."

jsuda writes "At least a half-dozen times in the book 'Foundations of Mac OS X Leopard Security' the authors state that there is a misconception that the Macintosh computer is immune from security problems. That allegation may explain why there are very few books published (and nearly none in recent years) about security for the Mac. This book is meant to change all that. The authors acknowledge that the Mac OS X software has had little of the security problem experience of Windows (and other operating systems, to a lesser extent) but they spend 455 pages detailing exactly where and how the Macintosh platform is (or may be) vulnerable." Read below for the rest of Jsuda's review.

pshuke writes "After 15 years of development, Wine version 1.0 has been released. Wine is an Open Source implementation of the Windows API on top of X, OpenGL, and Unix. While perfect windows compatibility has not yet been achieved, full support for Photoshop CS2, Excel Viewer 2003, Word Viewer 2003 and PowerPoint Viewer 2003 have been among the goals prior to the release. For further information about supported applications, head over to the appdb. Get it (source) while it's hot."

jfischet writes "Back in 2005 a Slashdot user asked this question and the responses were helpful — but I'd like to ask again to see what has changed in three years. I'd like to know what this community thinks is the best choice of smartphone for remotely administering Linux/UNIX boxes via SSH."

SkiifGeek, pointing to our recent coverage of what the NSA went through to create SELINUX, wants to know just how effective system hardening is at preventing successful attack, and writes "When Jay Beale presented at DefCon 14, he quoted statistics (PDF link) that Bastille protected against every major threat targeting Red Hat 6, before the threats were known. With simple techniques available for the everyday user which can start them on the path towards system hardening, just how effective have you found system and network hardening to be? The NSA does have some excellent guides to help harden not only your OS but also your browser and network equipment."

sproketboy writes with news that a developer named Marc Balmer has recently fixed a bug in a bit of BSD code which is roughly 25 years old. In addition to the OSnews summary, you can read Balmer's comments and a technical description of the bug. "This code will not work as expected when seeking to the second entry of a block where the first has been deleted: seekdir() calls readdir() which happily skips the first entry (it has inode set to zero), and advance to the second entry. When the user now calls readdir() to read the directory entry to which he just seekdir()ed, he does not get the second entry but the third. Much to my surprise I not only found this problem in all other BSDs or BSD derived systems like Mac OS X, but also in very old BSD versions. I first checked 4.4BSD Lite 2, and Otto confirmed it is also in 4.2BSD. The bug has been around for roughly 25 years or more."

eldavojohn writes "Here's a short update on the Novell Vs. SCO case we've been following. Our good friend Darl McBride made some interesting comments in court yesterday. He stated (under oath): 'Many Linux contributors were originally UNIX developers... We have evidence System V is in Linux... When you go to the bookstore and look in the UNIX section, there's books on "How to Program UNIX" but when you go to the Linux section and look for "How to Program Linux" you're not gonna find it, because it doesn't exist. Linux is a copy of UNIX, there is no difference [between them]." This flies directly in the face of what SCO found in extensive investigations in 2002 and contradicts what SCO Senior Vice President Chris Sontag had just finished testifying earlier that day (testimony that McBride did not hear)."

superglaze writes "Halfway through the two-month window of opportunity during which OOXML's ISO standardization can be derailed by a formal objection from a national standards body, the UK Unix Users Group is trying to force the British Standards Institution to do just that. According to the Unix Users Group, the BSI used a flawed decision-making process when they chose to approve OOXML in the ISO vote. 'The UKUUG is also folding in many other complaints about Office Open XML (OOXML), such as unresolved patent issues and a lack of completion in the specification's documentation, and is calling for the High Court of Justice to force a judicial review of the BSI's decision.' This is not the first time a country's ISO vote has been challenged."

UnknowingFool writes "Everyone's favorite CEO Darl McBride took the stand on Wednesday April 30 in Novell v. SCO. Chris Brown has posted his account on Groklaw of the 2nd day of trial. The first day's account can be found here. To refresh your memory in this ongoing case, Judge Kimball has already ruled that Novell owns the copyrights to Unix and has practically dismissed all of SCO's claims. This portion of the trial is about Novell's counterclaims that SCO never paid them the money from the Sun and MS deals. What is to be determined in this trial is how much of the money from the deals were for Unix licensing (SVRx) and how much were for SCO's server technology (Unixware)." (Read on for the rest, below.)

Tumbleweed writes "The Cross Platform and Interop team at Microsoft today announced some new beta products for managing Unix/Linux systems from MS Operations Manager 2007, as well as connectors for HP OpenView and IBM Tivoli Enterprise Console. Both betas are available at Microsoft Connect (search for systemcenter), according the blog."

cgh4be writes "I have been working in the IT industry for about 12 years and have had various jobs as a consultant and systems engineer. Over that time I've had the chance to do a little bit of everything: programming, networking, SAN, Linux/AIX/UNIX, Windows, sales, support, and on and on. However, over the last couple of months I have become a little disillusioned with the IT industry as a whole. Occasionally, I will get interested in some new technology, but for the most part I'm starting to find it all very tedious, repetitive, and boring and I'm no longer really interested in the hands-on aspect of the business. I suppose going the management route is one option, but I would still be dealing with a lot of the same frustrating technology issues. The other route I had in mind was a complete career change; take something I really enjoy doing outside of work now and try to make a career out of it. The only problem is that I have a wife and kid to support and my current job pays very well. Have any of you been through this kind of career 'mid-life crisis?' What did you do to get out of the rut? Is making a complete career change at this point a bad idea?"

Derkjan de Haan writes "I am glad to see progress is being made on the the ability of OpenSolaris to boot from a ZFS filesystem: 'This putback provides the ability to boot the Solaris Operating System from a ZFS root file system on both x86 and SPARC platforms. Full ZFS boot and install support will be available in a subsequent build. Because of the phased putback, we recommend waiting for the full boot and install support rather than attempting to use the ZFS boot features separately.'"

Smantha writes "I recently began teaching a Unix System Administration course at a community college. The previous instructor was using a very outdated textbook, and I'm trying to find one that is a bit more advanced and useful for my students. They are required to take a 100-level Unix class before this one and are familiar with the basics of using the command line. I'm looking for something that covers topics such as OS installation, software/package installation, user management, system administration tools, troubleshooting techniques and tools, service configuration (network services, for example) and some miscellaneous topics such as compression/archive tools, grep, make, and the like. What books have you found to be good references on your desk? What books have been good for learning these sorts of topics?"

Jon Mitchell writes "As a Perl programmer recently thrown in to the world of C development on Linux, I have been looking for something that would take my K&R level of experience and bring it up to date with modern methods, hopefully letting me write more efficient and reliable programs. Linux System Programming is a volume that targets this need. Robert Love, former "Chief Architect, Linux Desktop" at Novell, kernel hacker of many years, and Gnome developer of well known features such as Beagle and NetworkManager, attempts in this book to document the Linux system call and C API to common systems programming tasks. Given that he developed the pre-emptive kernel and inotify he has the knowledge." Read below for the rest of Jon's review.

r3lody writes "Finding a single book that encompasses what you want to learn can be difficult. Most cover a few portions of a subject in depth and skim over (or omit) others. Other books will cover each topic at about the same level: high enough to give an impression of what can be done, but not with enough depth to do it without a lot of effort. In A Practical Guide to Ubuntu Linux, Mark G. Sobell has created a single volume that gives the reader enough information to effectively install, configure and run workstations and servers using Ubuntu Linux. He has come the closest I have seen to containing all of the necessary information without being too shallow. Granted, to include everything you would want to know about Ubuntu Linux would take several books of this size, but this particular one provides most users the best bang for the buck. A DVD with the Gutsy Gibbon release of Ubuntu in a directly bootable form is included with the book." Read below for the rest of Ray's review.

Stony Stevenson writes "It used to be that popular PHP applications would run more poorly on Windows Server than on a Linux or Unix servers, for which PHP had been optimized. Specialist in the PHP language Zend Technologies now says that's no longer the case. The Zend Core commercially supported form of PHP has been certified by Microsoft as ready to run 'with performance and stability' on Windows Server 2008, said Andi Gutmans, co-founder and CTO of Zend. Previously, PHP 'didn't run as well as it should on Windows,' said Gutmans, despite the fact that 75% to 80% of PHP users were developing on Windows workstations."