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Category: Software

Essential Color Design Tool

Posted on 2007-10-15 By rolfje 1 Comment on Essential Color Design Tool

For those people out there designing user interfaces, web frontends or anything else displayed on a screen: About 8% of all males are color blind. This could mean that because of a simple color choice, 8% of your target audience (customers) could have serious difficulty in using your design. 5% of all males can’t distinguish green from red, although they are regarded as high contrast to eachother.

Do you want to test how your design looks to colorblind people? Now you can, with Color Oracle, a tool for Mac OSX and Windows which transposes the colors of your screen to reflect what it would look like if you were color blind. In fact, it can simulate 3 different kinds of color blindness.

From the site: “Color Oracle takes the guesswork out of designing for color blindness by showing you in real time what people with common color vision impairments will see. Color Oracle applies a full screen color filter to art you are designing – independently of the software that you are using. Eight percent of all males are affected by color vision impairement – make sure that your graphical work is readable by the widest possible audience.”

Software

AFP breaks when messing with your Public folder!

Posted on 2007-10-04 By rolfje No Comments on AFP breaks when messing with your Public folder!

Hi, just a quick reminder to myself and users of the AFP protocol (Apple File Protocol) who are wondering why it is not working. For some strange reason, if you start messing (deleting) the “Public” folder of any user which is on the system providing the AFP share, you will break the AFP protocol.

Read More “AFP breaks when messing with your Public folder!” »

Apple, Software

Phrack still in ASCII

Posted on 2007-08-04 By rolfje No Comments on Phrack still in ASCII

It is a long time since I read this stuff, but I stumbled upon a paper discussing the non-executable stack on OSX (a trick to prevent buffer/stack overflow exploits). Ah, the good old days. And with all this markup, it’s good to see that Phrack magazine stuck to their format. It’s still the same as over 20 years ago… Well written articles, focussed on correctness and content, for the coders out there who are not afraid experimenting with some assembly. The amount of (nightly) hours that go into the research and proof of these articles are unbelievable, and it shows.

Read More “Phrack still in ASCII” »

Fun, Software

Programmer Personality Test

Posted on 2007-06-06 By rolfje No Comments on Programmer Personality Test

Just found this funny page where you can take a Programmer Personality Check.

My programmer personality type is DHTB, which is explained as follows:

You’re a Doer.
You are very quick at getting tasks done. You believe the outcome is the most important part of a task and the faster you can reach that outcome the better. After all, time is money.

You like coding at a High level.
The world is made up of objects and components, you should create your programs in the same way.

You work best in a Team.
A good group is better than the sum of it’s parts. The only thing better than a genius programmer is a cohesive group of genius programmers.

You are a liBeral programmer.
Programming is a complex task and you should use white space and comments as freely as possible to help simplify the task. We’re not writing on paper anymore so we can take up as much room as we need.

Software

Technology does not sell

Posted on 2007-05-09 By rolfje No Comments on Technology does not sell

Seth Godin did a talk at Google campus in Februari last year. I recently stumbled upon this video of his talk, in which he explains to the Google people why Google sells.

He is very clear in explaining to technology people that technology does not sell. It’s technology that gives you a shot at marketing, nothing more. He makes some very good points which I’ll try to summarize, because the video takes 48 minutes to watch 🙂

Read More “Technology does not sell” »

Hardware, Software

The Digital Revolution

Posted on 2007-05-04 By rolfje 1 Comment on The Digital Revolution

Nice example of digital revolution and power to the people can be found at http://blog.outer-court.com/archive/2007-05-02-n67.html. Let’s hope manufacturers understand that people don’t want to pay for crippled content.

Digital copies where copyright is removed are actually better than their DRM protected originals, which makes good willing people move to pirated content, like I stated earlier. The important sentence here being “If I buy a DVD, I have to watch a few minutes of copyrights notices and commercials, without being able to skip them. If I rip it, and re-write it, these notices are gone…”.

Viva la Revolution!

Software

Disabling the Windows Clipboard

Posted on 2007-04-17 By rolfje No Comments on Disabling the Windows Clipboard

When copy-pasting in Windows, sometimes the clipboard bar appears, and if you’re really “lucky”, it also pops up a waring, distracting you from your work. The clipboard holds only 12 items, and I have never met anyone who used more than one. There is no way to turn this irritating feature off, unless you want to use the dreaded registry editor.

Feeling brave? Follow the instructions at http://support.microsoft.com/kb/207438.

Microsoft, Software

Parameter List Too Long

Posted on 2007-04-17 By rolfje 1 Comment on Parameter List Too Long

If your are “fortunate” enough to have to delete a lot of file from a directory on a Unix system, you are likely to encounter the “Parameter List Too Long” problem. This problem is caused by Unix trying to replace the “*” you just used by all names in the directory. This list is then passed to the rm command, which complains that it can not handle that much parameters.

To get around this limitation, you have a couple of options:

Delete all files in the current directory
By far the fastest and most compatible way to delete all files in the current directory without recursing into subdirectories is:
ls | xargs rm
This is the fastest command, because xargs makes sure the maximum allowed number of parameters is passed to rm, resulting in fewer calls/startups to rm.

Delete all files in the current directory and all subdirectories
To delete files not only from the current, but also from all subdirectories, use
find . -name "*" -exec rm -rf {} \;
This is somewhat slower, since rm is executed seperately for each file.

Above commands are tested on AIX and Linux.

Software

Thoughts on Widgets, Gadgets, Screenlets

Posted on 2007-04-11 By rolfje No Comments on Thoughts on Widgets, Gadgets, Screenlets

Just now, I was listening to the Java Posse podcast about the ab5k screenlet framework for Java, and I am finally convinced that software developers are a bunch of crazy, unrealistic, memory-hungry, cpu cycle stealers and by lack of normal people telling them otherwise are proud of it, too. The problem? Look at this list (no particular order):

  • Linux screenlets or applets
  • Windows Sidebar Gadgets
  • Apple Dashboard Widgets
  • Google Desktop Gadgets
  • Yahoo Widgets
  • and recently added: ab5k.org java screenlets

Read More “Thoughts on Widgets, Gadgets, Screenlets” »

Software

Apple and EMI follow up

Posted on 2007-04-03 By rolfje 1 Comment on Apple and EMI follow up

In a previous post I told you that Steve Jobs wants to provide DRM-free music through iTunes, but was held back by music companies. Steve must have had a few long and hard talks, because now EMI and Apple are teaming up to provide high quality DRM-free tracks through the iTunes music store, priced at $1.30. The same track, in a lower sound quality, with DRM costs $0.99. For 30 cents, you get a track you can actually use, with a higher bitrate.

At the same time this could be a trick by Apple to get around the legal issues currently being discussed about iTunes music not being available to other players than the iPod. Smart eh?

Apple, Software

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