Yesterday I had to debug a Mac OSX program and therefore I had to learn about how Mac Universal Binaries work.

Universal Binaries contain (most of the time) PowerPC code and Intel x86 code as well. While they could easily also feature code for other architectures, like your toaster or microwave, it usually looks somewhat like this: [Header|PowerPC|Intel]. The operating system decides which code it needs and executes the part of the file suitable for its architecture.

Now in order to see what kind of binary information is "sandwiched" in the file, there is a header, very nicely described in the Mac OS X ABI Mach-O File Format Reference.

It starts off with a "magical number", that funnily reads 0xCAFEBABE in hexadecimal. -- Cafe babe? Yup.


Looks like the programmers had some fun coming up with a readable magic number. :)

For a more in-depth explanation of how universal binaries look like, I recommend this blog post.

(thanks to the t-shirt model ;) )

Read more…

Zooomr, a "web 2.0" website for photos, is in my opinion the most promising flickr competitor around. It shares a lot of features with its well-known big brother that was bought by yahoo a while ago.

As I found out today, since a few months, Zooomr is still handing out "pro" accounts for bloggers that are free for one year. So today I upgraded my free zooomr account, uploading my first high-resolution picture to the service and blogging it in my German blog:

Christmas in November

My first impression of Zooomr is that it works very flawlessly and is by all means worth a thought when you decide where to host your photos. While I have set up an instance of Gallery 2 for my own photos, I always had the problem that I needed to scale them down to, say, 800x600 pixels. Otherwise every single photo would eat up around 2 megabytes-or-so of my personal web space, eventually filling up space needed for the actual websites etc.

Also, modern photo sharing sites come with a lot of nice features like RSS feeds, tags etc.; through their photo sharing capabilities, they are much easier to integrate into blogs or other web applications than classic photo tools.

Therefore I will give zooomr a shot for a while now, and eventually I will decide if I want to put all my photos on there or not. A big part of my decision will obviously be how much they want to charge me after the free year. Flickr takes 25 Dollars per year which, while it is not a lot, has kept me from signing up there so far, because I was unsure if I would use it enough to justify the (long-term) investment.

Come on, zooomr, convince me! ;)

Read more…

A week ago, the Firefox crop circle (finally) made it into Google Earth. This is a screenshot of how it looks like:

The Firefox Crop Circle on Google Earth

Now, as Asa found out, today the photos also made it into Google Maps:

The Firefox Crop Circle on Google Maps

Very nice! And well done, dear friends from the OSU Linux User Group!

(thanks to bagawk on #osu-lug for the Google Earth screenshot; thanks to Asa for the link to the Google Maps location!)

Read more…

About a week ago, Skype came up with its beta version 2.5 for Mac, so today I gave it a shot. Ambitiously, I dared to call into a meeting, where I was expected to enter the access code using my phone's number pad (DTMF dialing is what they call it, I think).

Skype's built in dial pad

Of course, it did not work: The numbers I dialed were not understood and after a few seconds, the computer on the other side cut off my connection.

Sadly, this funcionality is meanwhile needed for a vast majority of automatic caller systems, for banks, insurances, other businesses, even the government. And, the respective Skype bug was therefore already found a long time ago, one of the first forum topics that I could find on the issue is dated in April 2005.

By the way, on Windows this feature allegedly works without problems, so this issue is not related to the "Skype Out provider issue" they once had.

Seeing that long-known problems like these are simply ignored does not make me feel excited about their new features like SMS, the webcam stuff etc. anymore.

Instead, this just makes me wish they would spend a little more time fixing important bugs every once in a while.

Read more…

Yesterday I had an interesting conversation about the meaning(lessness) of several software project names, such as the well-known PHP, Wine and others, but also smaller projects like OSUOSL's RAIV.

As it turns out, every fancy project name is also an acronym. That's something that got really popular among Open Source projects, and even though some people argue it is kind of lame, it is nice to see how many more or less meaningful project names and acronyms have come up over time.

A very nice one I learned about yesterday is: The TWAIN Scanner API, heavily used on Mac and Windows systems to connect image scanning devices to the operating system, is, when unraveled, simply:

Technology without an interesting name


But there are also projects that are missing a "useful" solution for their "acronymic" name: I recently learned about the project called Oink. Oink is a collection of C++ static analysis tools and comes with a pretty awesome, still not-yet-"acronymed" name.

Anyone want to give it a shot?

Read more…

A big "oops" probably went through the slashdot office when the hit the limit of 16,777,216 comments in their system which used an unsigned mediumint as the ID type in their mysql database.

Changing the column in question apparently took three hours easily -- no wonder on a multi-million row table.

A quote:

We shall flog ourselves accordingly -- the slashdot people themselves

Or, to say it with the words of the first commenter (after the issue was solved...):

*Clap clap clap*

Golfclap for slashdot!

(via google blogoscoped)

Read more…

How you you know you just walked straight through a worm hole and reached 1985?

Spinning Beachball of Death; Source: WikipediaWhen you try to unmount an unreachable network drive and instead of succeeding after a little while, you get a spinning beachball of death leaving you -- after waiting naively for 15 minutes (I went to get my mail etc.) -- with no other possibility than hard-resetting your computer.

While I like my Mac a lot, this is one of the days when I want to ask:

Apple, when do you finally reach the 21st century?

Read more…

It's the second time in only a few days that I read this, so I guess I have to comment on it.

Today I had some minor problems loading my GMail account, so it showed me an error as follows:

Google: Switch off your Firewall

Alright, so imagine I am a naive computer user who just got this message and I obviously believe what they are saying. Now I am going to go ahead and disable my firewall altogether and live happily ever after -- until I come across the first script kiddie that turns my workstation into a spam bot, virus nest, or both.

Similar issue: That blogger on who nicely suggested to switch off the Phising protection altogether when the CPU usage of your new instance of MSIE 7 spikes on some AJAX websites. -- While he meanwhile revised it to an acceptable "add these individual sites to a whitelist for which you switch off the phishing protection", his initial suggestion was just as bad as the one up there by Google.

Come on, people. Not everybody is a computer geek. People actually believe what you are writing there.

So please start thinking before you type. Having people switch all their security features off first (but burying the information that this might be a bad idea somewhere deep inside the help files) is harmful and -- sorry -- just plain stupid. People will switch it all off, they will see that "everything works" and they will stop reading about the issue right afterwards.

If you really, really, really have to have them switch off part of their software (which is not too surprising for some paranoid security products), at least spend half a minute explaining how the workaround can be done securely, and only for the page in question.

You owe this to your customers. Or, to put it differently: If you handle your customers' privacy as carelessly as you handle their web security, I sincerely hope nobody ever tells you their social security number.

Read more…

alexa -- a search engine that provides traffic rankings about web pages too -- currently lists the first five websites on their "movers and shakers" list from Mozilla.

This blog is ranked #6 with an 80,000% growth and a weekly traffic rank of 4,277.

Chances are that's the one of the biggest growths Alexa has ever recorded for a single website :) -- I'm impressed! on the Alexa movers and shakers list

Update: I am number 2 now! :) The growth percentage has fallen to a less impressive 460% this week but I guess being higher in the list is nice too ;)

Alexa, number 2

Read more…

So, the MySpace DNS admins seriously point one address of the round-robin record for to localhost. Smart move.

$ host -vv
Trying ""
;; ->>HEADER< <- opcode: QUERY, status: NOERROR, id: 61932
;; flags: qr rd ra; QUERY: 1, ANSWER: 5, AUTHORITY: 2, ADDITIONAL: 2

;                   IN      A

;; ANSWER SECTION:            8282    IN      A            8282    IN      A            8282    IN      A            8282    IN      A            8282    IN      A

While is most certainly "my space", I don't think many people host a copy of MySpace on their workstation...

Wonder how many people have to blog it until they fix it ;) In any case, Thinkgeek already has the right t-shirt for them.

(via OpenDNS and Elliot Back)

Read more…