Author: Dave Farquhar

Book scanning on the (relatively) cheap

Dave Farquhar Copyright , , , ,

Ars Technica has a fascinating article on the trials and tribulations of building a book scanner from a kit.

They lament the lack of software support, however–namely, a program to convert the image files generated by the digital camera into a PDF. Should I point them in the right direction? Why not? The key is Imagemagick, of course.
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Use Apachebench to test your webserver optimizations

Dave Farquhar Apache , , , , ,

If your web server is slow and you want to fix it, it’s nice to be able to quantify what you got. Enter Apachebench, which is part of Apache and probably already on your server. Read more

Home network projects for a budding sysadmin

Dave Farquhar Servers and Networking , , ,

A very good question came in as a comment to my earlier post, the benefits of practicing IT at home. What do I mean by putting some Windows 7 machines on a domain? It’s one of several good home network projects.

I mean standing up a server with centralized user accounts and shares, running on Windows Server or Samba, whichever you can afford. Make it a print server too, and print from it, just like you would from an office. Then extend it, and extend your sysadmin skills. Here are several ideas for projects of varying length, difficulty, and expense.

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The LCMS won’t be able to work out its differences in the dark

Dave Farquhar Christianity , , , , , , , , ,

I wish I had a nickel for every time I heard a journalism professor say, “Don’t ever do something you wouldn’t want to see on the front page of the New York Times.”

It’s worse today. In the 1990s, the news cycle was hours long. Today, with three major cable news channels and the Internet, the news cycle is minutes long, and marching toward real-time.

That’s the problem with Dr. Matthew Harrison’s hope, reported in the Post-Dispatch, to handle the LCMS’s Sandy Hook Vigil controversy “[Internally,] well out of the public spotlight.”
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How to maximize a Computer Science degree

Dave Farquhar Careers , , , ,

Yesterday an interesting question popped up on Slashdot, asking for an alternative to a computer science degree for an aspiring web developer. He complained that what he’s learning in class doesn’t relate to what he wants to do in the field.

Assuming that by “web developer” he means someone who can code stuff in ASP and/or PHP with a database backend and do stuff in Javascript–as opposed to a designer who just does HTML and CSS–I think he’s best off staying where he is and asking better questions.
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The problem with dictionary passwords

Dave Farquhar security , , ,

Consulting firm Deloitte is warning that 8-character passwords will be obsolete this year. Sound familiar? Of course, the Slashdot crowd blamed it as security “experts” (their words) creating hype to make money.

Well, I’m a certified security professional who doesn’t have a dog in this fight, except that I don’t want your accounts getting stolen. So here’s the problem with many of the solutions the Slashdot crowd posed.

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I do not agree with my church president’s forced apology over Newtown, Conn.

Dave Farquhar Christianity , , , , , ,

This morning, I read something in the St. Louis-Post Dispatch that disturbed me greatly. I didn’t say anything about it until I had a chance to confirm with my pastor that it is true.

In the aftermath of the shooting in Newtown, Conn., Rev. Rob Morris, pastor of Christ the King Lutheran Church, spoke at an interfaith service designed to give comfort to the community. the Rev. Dr. Matthew Harrison, the president of the Lutheran Church-Missouri Synod, of which I am a member and a former employee, forced Rev. Morris to apologize. (I will refer to him as Dr. Harrison throughout because he has earned that degree, not because I agree with what he says. It is possible to acknowledge rank while expressing disagreement.)

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Making gradual improvements, starting with whatever bugs you the most

Dave Farquhar Uncategorized , , , , ,

A long project can be paralyzing at times, making it hard to figure out where to start. A trick that I learned in model railroading is to just work on whatever small percentage of the project that bothers you the most. Then, when that’s done, cycle back, create another subproject that fixes whatever bugs you the most now, and keep making incremental improvements like that until you get where you want.

I’ve used the same trick on home improvement projects, and I applied it to this web site over the course of the last few weeks, doing a series of incremental improvements. It led places I didn’t expect it.
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The benefits of doing IT at home, too

Dave Farquhar Hardware , , , , , , , ,

Earlier this week, The Register touted the benefits of having a home lab.

That lab doesn’t necessarily have to be elaborate. But there is definitely something to be said for having some equipment that you can learn and experiment on, and that can break without the world ending. Read more

Update Flash now

Dave Farquhar security ,

Adobe updated Flash today, to fix a couple of 0-day vulnerabilities. Here’s how to force a manual update on Windows and Mac OS X. I put on my sysadmin hat and looked over the update scripts on the page; they’re a little complex but don’t do anything nefarious.

Grab the appropriate update script for the type of computer you’re running, close your browser, run it, and stay safe. And remember, you’re doing me and the rest of the world a favor; if your computer is up to date, then it isn’t attacking my network, and if mine’s up to date and secure, mine isn’t attacking yours.