Friday, April 27, 2012

reverse engineering math

Nice treasure trove of information on the subject

Saturday, April 21, 2012

Friday, April 20, 2012

Useful information for Mac gamers

Some useful information here for people that also like to play games on their Apple computers. In particular for people playing Steam games for Mac. [Mac] Frequently Asked Questions + Games List Unsupported Video Cards on Mac Steam warns me that my video card is not supported and my Source games do not work. What is wrong

Wednesday, April 11, 2012

Monday, April 9, 2012

Favorite quotes

Our Earth is degenerate in these later days; there are signs that the world is speedily coming to an end; bribery and corruption are common; children no longer obey their parents; every man wants to write a book and the end of the world is evidently approaching. -- Inscription on an Assyrian clay tablet, circa 2800 B.C.E. (Maggie Koerth-Baker, Boing Boing)

Apple MCX

Apple’s Managed Preferences system (also known as MCX) is under-documented, often misunderstood, and sometimes outright unknown by sys admins. I never knew about them and now I do. Here's an Apple article that talks more about them: Summary Learn how to locate and manage preferences using Workgroup Manager's preference editor. Managed Client: How to manage settings using the preference editor

Wednesday, April 4, 2012

Macports and latest Xcode

If you are having problems with Macports and latest version of Xcode, name messages saying you don't have Xcode installed you might need to run some commands to fix it: sudo xcode-select -switch /Applications/ MacPorts stops working after installing Xcode 4.3

Tuesday, April 3, 2012

Very confusing world of multiple Apple ID's

Apple's official support of multiple Apple ID's. And no you cannot merge them :( Might help someone. An Apple ID is the email address you use as a login for just about everything you do with Apple, including using iCloud to store your content, buying songs from the iTunes Store, and downloading apps from the App Store. When you set up your iPhone, iPad, or iPod touch, you use the same Apple ID for iCloud services and purchases on the iTunes Store, App Store, and iBookstore. You can, however, use one Apple ID for iCloud services and another Apple ID for store purchases (including iTunes in the Cloud and iTunes Match). You will get all the benefits of iCloud whether you use the same Apple ID for iCloud and store purchases, or different IDs for each.

Monday, April 2, 2012

Upside down or sideways photos in Mac OS X

A plausible explanation for those random Upside down or sideways photos in Mac OS X you sometimes get. I figured it was an endianness issue but apparently it's caused a EXIF Orientation flag issue. Software Support for Orientation While there are countless software programs available today that display JPEG images, only a subset of them actually interpret the EXIF Orientation flag. Just like color management, many programs simply display the JPEG image as it is stored, and completely ignore any extra details stored in the file's metadata. The most important of these additional details is the Orientation flag, stored in the JPEG APP1 marker under EXIF IFD0.

Sunday, April 1, 2012


Wow getting Jenkins working on Windows and Mac a lot harder than it should be. Was getting strange cannot determine git version and CreateProcess error=5, Access is denied from Jenkins for git I could see from the console. Had to guess and finally setting Git's path to C:\Program Files\Git\bin\git.exe finally got it to work! C:\Program Files\Git\bin is not good enough for some reason. On Mac OS X failed to work until I manually set Git path to /usr/bin/git. After all this it's also obvious that this is pretty new software or not widely used since I usually get pretty good results from Google but this time didn't help very much at all!
Tweets by @daviangel