Books

Open Source Textbook For Computer Literacy? 95

Posted by timothy from the just-ask-russie-poo dept.
dcollins writes "The college where I work has decided to forego ordering a textbook for the computer class that I teach this fall. Does anyone know of a free, open-source textbook for basic computer literacy concepts (overview of hardware, software, operating systems, and file systems)?"
Programming

Contributing To a Project With a Reclusive Maintainer? 162

Posted by Soulskill from the pulling-a-davis dept.
zerointeger writes "I am still fairly new to programming in C, but I was asked to extend an open source authentication module by my employer. The project is complete, testing has been done and it works as designed. The extension/patch I have created is fairly robust, as it includes configuration options, help files, and several additional files. The problem is that I have been unable to make contact with the current maintainer about having this feature added. I think the only reason I'd like to see this included is to prevent any patching of later revisions. A few others I have spoken with agree that the patch would benefit administrators attempting to push Linux onto the desktop, as we have done at the University that employs me. Has anyone else submitted patches/extensions to what seems to be a black hole?"
Security

How Can I Tell If My Computer Is Part of a Botnet? 491

Posted by timothy from the check-if-you-are-running-windows dept.
ashraya writes "My father (not too computer literate) has a desktop and a laptop both running Windows in his network back in Hyderabad, India. I set up a Linksys router for him to use with his broadband service. For some reason, he reset the config on the Linksys, and connected it up without wireless security, and also with the default admin password for some time. As you would expect, both of the Windows computers got 'slow,' and the desktop stopped connecting to the internet completely for some reason. As I logged in remotely to 'fix' things, I noticed on the Linksys' log that the laptop was making seemingly random connections to high-numbered ports on various IPs. I did an nslookup on the IPs to see that they were all either in Canada or US, with Comcast and other ISP addresses. Is that a sign that the computers were in a botnet? Are the other hosts part of the botnet too? (I have since rebuilt the Windows hosts, and these connections are not happening now. I have also secured the Linksys.)"
Education

What's In an Educational Game? 160

Posted by Soulskill from the zombies-and-zombie-removal-tools dept.
An anonymous reader writes "I work at a non-profit whose mandate is to increase science literacy and awareness. One of the methods that we've started exploring is in making free, online educational games. Our target demographic for the games is kids aged 8-12, but there is no reason the games could not also appeal to a broader age range. What would you look for in an educational game? Does length and depth of gameplay matter to you, or would you rather play a trivial game with subconscious educational value?"
Communications

Navigating a Geek Marriage? 1146

Posted by kdawson from the waiting-for-taco-to-weigh-in dept.
JoeLinux writes "I am soon to marry my true love (a girl! yes! they do exist!). She is a literary geek, whereas I am a gaming/Linux geek. Being the RTFM-style geeks that we are, we have been reading up on marriage, making things work, etc. Unfortunately, all of the references seem to be based around an alpha-male jock and a submissive cheerleader-style wife. A lot of the references to incompatibility in the books don't apply to us (neglect due to interest in sports, etc.). What are some of the pitfalls and successes learned in the course of a more geek-oriented marriage?"
Privacy

Can We Abandon Confidentiality For Google Apps? 480

Posted by kdawson from the what-price-convenience dept.
An anonymous reader writes "I provide IT services for medium-sized medical and law practices. Lately I have been getting a lot of feedback from doctors and lawyers who use gmail at home and believe that they can run a significant portion of their practice IT on Google Apps. From a support standpoint, I'd be happy to chuck mail/calendar service management into the bin and let them run with gmail, but for these businesses, there is significant legal liability associated with the confidentiality of their communications and records (e.g., HIPAA). For those with high-profile celebrity clients, simply telling them 'Google employees can read your stuff' will usually end the conversation right there. But for smaller practices, I often get a lot of push-back in the form of 'What's wrong with trusting Google?' and 'Google's not interested in our email/calendar.' Weighing what they see as a tiny legal risk against the promise of Free IT Stuff(TM) becomes increasingly lopsided given the clear functionality / usability / ubiquity that they experience when using Google at home. So my question to the Slashdot community is: Are they right? Is it time for me to remove the Tin Foil Hat on the subject of confidentiality and stop resisting the juggernaut that is Google? If not, what is the best way to clarify the confidentiality issues for these clients?"
Software

Cheap, Cross-Platform Electronic Circuit Simulation Software? 211

Posted by timothy from the what-we-all-want-when-we-wake-up-in-the-morning dept.
dv82 writes "I teach circuits and electronics at the undergraduate level, and have been using the free student demo version of OrCad for schematic capture and simulation because (a) it comes with the textbook and (b) it's powerful enough for the job. Unfortunately OrCad runs only under Windows, and students increasingly are switching to Mac (and some Linux netbooks). Wine and its variants will not run OrCad, and I don't wish to require students to purchase Windows and run with a VM. The only production-quality cross-platform CAD tool I have found so far is McCad, but its demo version is so limited in total allowed nets that it can't even run a basic opamp circuit with a realistic 741 opamp model. gEDA is friendly to everything BUT Windows, and is nowhere near as refined as OrCad. I would like students to be able to run the software on their laptops without a network connection, which eliminates more options. Any suggestions?"
Printer

Linux-Friendly Label Printer Recomendations? 188

Posted by timothy from the whippersnapper-can't-address-envelopes-by-hand dept.
pdkl95 writes "I have been using some small, simple desktop label printers for quite a while now. Unfortunately, it's rapidly becoming clear that my printing needs are for something far more 'industrial strength.' Several of the label printers have failed, and they never really had the management features I wanted. So, does anybody have recommendations on label printers, that can hold up to a quite heavy load? The catch is that I'm printing to them from CUPS under Linux, and it seems like specialty-printers are a windows-centric field."
Databases

Copyright Status of Thermodynamic Properties? 154

Posted by kdawson from the consider-crown-copyright dept.
orzetto writes "I work at a research institute, and programming models of physical systems is what I do most of the time. One significant problem when modeling physical processes is finding thermodynamic data. There are some commercial solutions, but these can be quite expensive, and to the best of my knowledge there are no open source efforts in this direction. In my previous job, my company used NIST's Supertrapp, which is not really that expensive, but is written in Fortran, and an old-fashioned dialect at that. As a result, it is a bit difficult to integrate into other projects (praised be f2c), and the programming interface is simply horrible; worse, there are some Fortran-induced limitations such as a maximum of 20 species in a mixture. I was wondering whether it would be legal to buy a copy of such a database (they usually sell with source code, no one can read Fortran anyway); take the data, possibly reformatting it as XML; implement a new programming interface from scratch; and publish the package as free software. Thermodynamic data is not an intellectual creation but a mere measurement, which was most likely done not by the programmers but by scientists funded with our tax money. What are your experiences and opinions on the matter? For the record, I am based in Germany, so the EU database directive applies."
Patents

How To Vet Clever Ideas Without Giving Them Away? 539

Posted by timothy from the don't-clever-ideas-want-to-be-free? dept.
Rival writes "As an inquisitive and creative geek, I am constantly coming up with 'clever' ideas. Most often I discover fundamental or practical flaws lurking in the details, which I'm fine with. As Edison said, 'I haven't failed; I've found 10,000 ways that don't work.' Other times, I discover that someone else has beaten me to the idea. I'm fine with that, too. At least I know that I've come up with a great idea, even if I'm not the first. There are times, however, when I can find no flaws with an idea and nobody else seems to have thought of it. I'm not conceited enough to think my idea is genius; I just assume that I'm not knowledgeable enough to see what I'm missing. In these times, I often want to ask a subject matter expert for their thoughts. On the admittedly long chance that an idea is genius, however, what is the best way to ask for another's insights while mitigating the risk of them stealing or sharing the idea? Asking a stranger to sign a contract before discussing an idea seems like a good way to get a door closed on my face. What are your experiences and suggestions?"
Networking

Cable Management To Defeat Clutter? 323

Posted by timothy from the why-not-just-use-wireless-versions dept.
igny writes "I have just recently cleaned up my home office, reducing the clutter, but I could not come up with a neat solution to my cable problem. I believe my cable usage is even below average for a slashdotter, but still I have three computers with a bunch of ethernet and power cables, two cellphones, video and photo cables, with several proprietary chargers/AC adapters, printer, two NASes with a couple of external drives, phone, audio system, routers/switches, modem ... Everything requires cables of different kinds. I believe that AC adapters still draw some power even with no device hooked to it. So I organized my power cables by usage with several power strips to turn off adapters which I use less frequently. I am asking for advice from experienced slashdotters. How do you cope with your cable problem? Do you use dedicated tables, shelves, armoire for the cables? I am still looking for a neat, efficient, and safe (I have small kids) solution."
Portables

Delete Data On Netbook If Stolen? 459

Posted by kdawson from the grab-brick-smash-window dept.
An anonymous reader writes "I have just moved overseas on a 2-year working holiday visa and so I picked up a netbook for the interim, an MSI Wind U100 Plus running WinXP. I love it to bits. But as I am traveling around I am somewhat worried about theft. Most of my important stuff is in Gmail and Google Docs; however, I don't always have Net access and find it useful to gear up the offline versions for both. Ideally I would like to securely delete all the offline data from the hard drive if it were stolen. Since it is backed up in the cloud, and the netbook is so cheap I don't really care about recovery, a solution that bricks it would be fine — and indeed would give me a warm glow knowing a prospective thief would have wasted their time. But it's not good if they can extract the HD and get at the data some other way. All thief-foiling suggestions are welcome, be they software, hardware, or other."
Programming

Collaborative Software For Pair Programming? 302

Posted by timothy from the is-your-sister's-name-cynthia? dept.
DavidMatuszek writes "I will be teaching Java again this Fall. Students work in pairs, but unfortunately (after the first hour) typically not physically together. I would like to find collaborative software that is (1) dead simple to use, because that's not what the course is about, and (2) free. Google Docs would do, but students will be sharing code — plain text — not RTF or HTML or Word files. Is there such software for plain text?"
Operating Systems

A GNU/Linux Distro Needing Windows To Install? 174

Posted by kdawson from the for-some-values-of-instant dept.
dgun writes "I recently put together a new PC. When I purchased the motherboard, I noticed that it came with an instant-on OS, a small GNU/Linux distro called Splashtop. I assumed that the OS was on a ROM chip on the motherboard. To my great annoyance, when I tried to boot to this OS, a message said that it was not installed. It turns out that motherboard comes with an install disk for this GNU/Linux OS — that you can only run from Windows, to install Splashtop on the hard drive. First of all, doesn't installing it on the hard drive defeat the point of having an instant-on OS? If I wanted to dual-boot a small GNU/Linux OS, there are plenty that I could choose from. Second, if distributing GPL'ed software by means that completely preclude it from being used without Windows is not a violation of the GPL, should it not be?"
Graphics

Choosing Better-Quality JPEG Images With Software? 291

Posted by timothy from the on-the-tip-of-my-script dept.
kpoole55 writes "I've been googling for an answer to a question and I'm not making much progress. The problem is image collections, and finding the better of near-duplicate images. There are many programs, free and costly, CLI or GUI oriented, for finding visually similar images — but I'm looking for a next step in the process. It's known that saving the same source image in JPEG format at different quality levels produces different images, the one at the lower quality having more JPEG artifacts. I've been trying to find a method to compare two visually similar JPEG images and select the one with the fewest JPEG artifacts (or the one with the most JPEG artifacts, either will serve.) I also suspect that this is going to be one of those 'Well, of course, how else would you do it? It's so simple.' moments."
The Internet

Integrating Wikipedia With a Local Intranet Wiki 121

Posted by samzenpus from the mix-and-match dept.
An anonymous reader writes "I work for a large company taking a preliminary look at developing an honest-to-goodness wiki. We have tried to launch a company-wide wiki before, but with little success. The technical domains of each part of the company are different, thus each article needs a good deal of background to be useful. Of course, due the proprietary nature of our work we cannot share our articles outside of the intranet. What we would like to do is leverage existing wikis by augmenting our internal wiki with an external wiki. When a user accesses Wikipedia from inside our intranet, they receive the wikipedia content, plus the local domain specific information. For example, links to company-specific wiki pages would be available in Wikipedia pages. Has anyone else tried to do something like this? I know it sounds like a logistical nightmare; are there any thoughts on how to make this successful?"
Education

Tomorrow's Science Heroes? 799

Posted by kdawson from the mister-wizard-reincarnated dept.
An anonymous reader writes "As a kid I was (and still am) heavily influenced by Carl Sagan, and a little later by Stephen Hawking. Now as I have started a family with two kids, currently age 5 and 2, I am wondering who out there is popularizing science. Currently, my wife and I can get the kids excited about the world around them, but I'd like to find someone inspiring from outside the family as they get older. Sure, we'll always have 'Cosmos,' but are there any contemporaries who are trying to bring science into the public view in such a fun and intriguing way? Someone the kids can look up to and be inspired by? Where is the next Science Hero?"
Education

Which Language Approach For a Computer Science Degree? 537

Posted by timothy from the do-both-and-compare dept.
wikid_one writes "I recently went back to college to finish my CS degree, however this time I moved to a new school. My previous school taught only C++, except for a few higher level electives (OpenGL). The school I am now attending teaches what seems like every language in the book. The first two semesters are Java, and then you move to Python, C, Bash, Oracle, and Assembly. While I feel that it would be nice to get a well-rounded introduction to the programming world, I also feel that I am going to come out of school not having the expertise required in a single language to land a good job. After reading the syllabi, all the higher level classes appear to teach concepts rather than work to develop advanced techniques in a specific language. Which method of teaching is going to better provide me with the experience I need, as well as the experience an employer wants to see in a college graduate?"
Networking

How Do You Create Config Files Automatically? 113

Posted by timothy from the hire-7-new-admins dept.
An anonymous reader writes "When deploying new server/servergroup/cluster to your IT infrastructure, deployment (simplified) consist of following steps: OS installation: to do it over network, boot server must be configured for this new server/servergroup/cluster; configuration/package management: configuration server has to be aware of the newcomer(s); monitoring and alerting: monitoring software must be reconfigured; and performance metrics: a tool for collecting data must be reconfigured. There are many excellent software solutions for those particular jobs, say configuration management (Puppet, Chef, cfengine, bcfg2), monitoring hosts and services (Nagios, Zabbix, OpenNMS, Zenoss, etc) and performance metrics (Ganglia, etc.). But each of these tools has to be configured independently or at least configuration has to be generated. What tools do you use to achieve this? For example, when you have to deploy a new server, how do you create configs for, let's say, PXE boot server, Puppet, Nagios and Ganglia, at once?"
Programming

Developer Stigma After a Bad Or Catastrophic Release? 223

Posted by Soulskill from the don't-call-us-we'll-call-you dept.
An anonymous reader writes "We hear in the news all the time about how executives can drive a company into the ground and yet somehow become more desirable to other big companies. What we don't hear about are the grunts who implemented those decisions, and whether or not they end up resume-stained or blacklisted. Since we've got so many developers with lots of time in the trenches, I thought I would appeal to their experience. When disaster looms and sales starts pushing for development that has little chance but to end in disaster, what happens to the programmer who decides he needs his job enough to follow orders? Have they ever become unhireable?"

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