A picture for users of lesser OSs
All in all, GNU/Linuxes are pretty mundane operating systems. There is nothing too fancy about them - It's more or less a collection of operating systems good ideas (Andrew Tanenbaum will never read this, fortunately), rolled out as a kernel (Linux itself), with a very polished userland (GNU, plus other programs that particular distros select) on top of it.
Its roots date back to the 70s, to Unix - it was made to its image. Current versions of both are quite similar and a Linux user will be pretty much at home on OSX, BSD, Solaris or AIX.
But those 70's ideas do not mean Linux is an old-fashined OS that brought nothing new to the world of operating systems.
One of the nicest things GNU/Linux introduced is comprehensive software package dependency and update management. With it, if you want to install a program, you can pick it from a list and, like by magic, all libraries, resources and everything else the program depends, plus the program itself, are installed. No need to browse the web after an installer, no need to run programs as a super-user, nothing. Everything quick and simple. And then, when the time comes a new version of something in your computer becomes available, the machine warns you and prompts you to install it, regardless of where it came from, as long as its publisher is registered with the software management system (like the Chrome browser and the VirtualBox VM tools in the picture you see, as well as Skype, which you don't see in the picture because mine is up-to-date). Software components are neatly divided in packages that depend on each other. Need a DVD burner? Codecs will be downloaded with it.
And then, when something becomes unnecessary or obsolete, the machine offers to delete it and conserve disk space.
Other operating systems attempt to accomplish the same with a variety of tools, but none, perhaps with the exception of OpenSolaris (because they hired the guy who designed Debian's package management), has anything that comes even close.
Cool, isn't it?
Editor nirvana
To say GNU Emacs is merely a text editor is an understatement. Ever since I decided I would learn to use it (out of a never quite accomplished mission of learning Lisp once and for all), it impresses me almost on a daily basis.
Yesterday, while playing with my choice of screen fonts for the editor (something every bit as important as choosing one's text editor), I discovered two pop-up menu options, to increase and decrease font size. A little playing with Meta-X and I arrived a couple functions, "text-scale-increase" and "text-scale-decrease". A little more digging brought me to the key combinations "Control X Control plus" and "Control X Control minus" sequences. Usable, but I wanted something easier to type.
Few non-Emacs users appreciate the fact Emacs has no configuration file. What it has is a program, in its own Lisp dialect, that's executed every time the editor is started. Within this program I can define new functions, load external libraries and even write a credible implementation of vi. This time I made two simple edits to my init.el file that added two new key bindings:
(global-set-key (kbd "C--") 'text-scale-decrease) (global-set-key (kbd "C-+") 'text-scale-increase)
The first one binds the "Control minus" key combination to the text-scale-decrease function (that decreases text size) while the second binds "Control plus" to the opposite text-scale-increase function. Easy enough for me. Now, every time Emacs starts, it has a couple bindings extra key bindings (on top of all other already added by loading external libraries, modules and so on) that make my life more convenient.
And this concludes my Emacs praise of the day. Thanks for coming.
An obvious answer and why I still won't switch to Mac
There was one nagging thought that was lurking in my brain while I wrote my last post that finally condensed into a fully-formed idea: you should use the platform that has everything the platform you develop for has.
Five reasons why this developer won't switch to Mac
There are many reasons to switch to Mac (or, better, to switch away from Windows), but being a software developer is most certainly not one of them
