Archive for the ‘Tech’ Category

If you’re running CentOS, you may find yourself frustrated that you have GCC 4.2 or older, when you need to be running at least 4.3 for some features – for example, if you want to compile HipHop for PHP.

Never fear, you don’t need to compile a compiler from source!

As well as the gcc RPMs in the repository, there are also a set for GCC 4.4, appropriately enough named gcc44 and you can install them in the usual way.

yum install gcc44 g++44

Apache comes with a cool load testing script called Apache Bench, which lets you throw loads of requests at a URL. It comes bundled with Apache, so if you’re running the LAMP stack, you probably already have it.

The syntax is simple.

ab -n 1000 http://www.google.com/

This will throw a thousand requests at Google and then produce a report on how long it look. You can also use the -c option to set the number of concurrent requests. There are lots more options too – see the Apache docs for full details.

If you need to view a file on the terminal, the traditional way to do it is using more. More is fine. But less is better.

less filename

If is very similar to more, but has extended capabilities, for example you can go back as well as forward through a file.

For those of you who attended last year’s Secular Ball, you may remember that we did all the registrations though the website, SecularBall.org.

At the time we also registered SecularBall.com but those having come up for renewal, we decided only to renew the .org domain as barely anyone visits that, so having the .com isn’t even worth the $8 it would cost to renew it.

Anyway, someone recently sent me this email.

Hello,

I believe you’re the owner of secularball.org. I’ve got a proposition
concerning your website. Would you be interested in acquiring
secularball.com?

I understand that you may be concerned about the legitimacy of this.
If you’re a bit skeptical, I can upload an HTML page to verify
ownership beforehand. We can also use a third party escrow (who will
essentially ensure your money is safe until you retain complete
control over the domain name) for optimal security.

PS: I’m only emailing you because I believe you can benefit from this.
I do not intend to email you again unless you respond to this inquiry.

Regards,
Faheem.

It’s bad enough these lowly bottom feeders gouge out a living based on registering other people’s trademarks, but you would think that if you were in such a business you would have at least the basic common sense to do just a bit of research and see that we already were the owner of said domain until recently and obviously had no interest in it (or at least make reference to the idea of selling it back to us).

Last month, I went to a talk by Richard McIntyre on “The Future of PHP”.

Turns out, it’s JavaScript.

More and more these days, web applications are being developed with fat front end clients loaded with JavaScript, and the server-side processing is primarily used for data processing and APIs. So we’re seeing a shift from PHP being used as a somewhat front-end technology to merely (I say merely, there is a lot of work to do it) delivering the content in a format the JavaScript front end can consume.

Perhaps this is why we’ve seen a rise in the number of microframeworks, such as Silex, that I recently blogged about.

I think the overriding message I took away from the talk though is that they’re inventing development platforms faster than I can learn them! I’ve already got a large list of technologies and libraries I need to review and I think I came away from this talk with another half a dozen!

Really enjoyed the talk though, and if you’re interested in PHP and in the Leeds area you should definitely check out the Leeds PHP User Group who host such events on a monthly basis.

Back to basics today. Creating a user and setting their password.

useradd test
passwd test

Following on from my previous post about installing ImageMagick from source, to get it working with Apache you need to do the following. First, we need to install something from Pecl. So make sure you have the pecl command at hand – if not, install it.

apt-get install pear

Then run the following.

apt-get install php5-dev
pecl install imagick

Finally, add the extension to your php.ini.

extension=imagick.so

Recently, I stopped using Foursquare.

I really like the concept. Making every day life a little more fun. It’s good because it encourages you to go out and do new things – if only to get the Foursquare points, and anything that encourages people to go out and explore the big wide world is a positive.

However, I found it was just taking over a little too much. The first thing I would do when arriving at somewhere new to check in, and it was just taking too much time to log onto my phone all the time and check in somewhere. So I decided to go cold turkey and remove it from my phone.

By this point, most developers have realised that Firefox is a cludgey pile of crap that eats up all your memory, and made the switch to Chrome, those developer tools long since surpassed Firebug.

Recently though, I’ve been running out or memory a lot and I don’t think it’s accurate to say Chrome isn’t to blame. As it runs everything in different processes, it’s easy to miss how much memory it is eating up, but I found it using 620MB of memory with just four tabs open.

Of course having Netbeans eating up so much clearly isn’t helping either, but IDEs are always a bag of crap (Eclipse is worse, I miss Notepad++).

There is an RPM available for ImageMagick on Debian, but it isn’t the most update to date, so if you need all the new features, you’ll need to compile and install it from source. Luckily, it’s very easy to do.

wget ftp://ftp.imagemagick.org/pub/ImageMagick/ImageMagick.tar.gz
tar xvfz ImageMagick.tar.gz
cd 
./configure
make
make install
make check