Auto-poweroff that server in your cellar
Our cellar houses an old grey box that acts as a home server for the family. It's quite useful in a number of ways, as a file server, web server, database server, and so on. It also, traditionally, had a habit of wasting power—it's so much nicer to just have the machine running when you use it. But, with the wonders of Wake on LAN, even the “I'm too lazy to run into the cellar” argument has lost any validity it might have had.
So much for turning the box on, how about turning it off? Figuring out when nobody is using the machine and then remembering to turn it off as well is hardly a task for a mere mortal. So I wrote a script that does it for me. is_anyone_here.py checks whether anyone is logged in, and looks for any evidence of recent usage. It was written on/for a Debian GNU/Linux (lenny) system with vsftpd and samba, and may require some modifications to work properly in your environment.
Have a look at the whole script after the break.
Creating the perfect keyboard layout
After having read this post's title, you might have though “ah, he'll be presenting [insert favourite subculture keyboard layout eg neo]! nice!”. If so, you'd be wrong. If, on the other hand, you're thinking “perfect keyboard layout? There's no such thing!”, then I couldn't agree more. Anyway, …
I have been using the standard US keyboard layout for years, almost always without actually using an American keyboard. The main reason I chose it over the German layout is that characters like []{}\|/`, used in many programming languages, are placed in a civilized manner, meaning I can type them quickly and without breaking my fingers.
The standard US layout has a certain problem, though: when it comes to typing in languages that don't happen to be English, it fails spectacularly. Since I have to write quite a lot of German and, nowadays, French, on my computer(s), this is quite a drawback.
Umn, I fixed it
It's not that hard to create your own keyboard layout, which I have done. I chose to use a standard US layout as base, leaving every single key binding intact, using level-3, i.e. AltGr, bindings to represent missing characters.
The German umlauts and ligature ÄäÖöÜüß? (the last character is the capital ß) I decided to map to the most obvious places imaginable: on the A, O, U and S keys, so AltGr+Shift+U produces Ü.
I created support for most romance languages by adding Çç to the C key (as above), Ññ to the N key, and a number of hidden dead keys: AltGr+' e renders é, AltGr+" e renders ë; the keys for `,~ and ^ act equivalently. The characters Ææ,Œœ,Øø and Åå are on the W,I,Q and Z keys, respectively, ensuring full support for French, Danish, Norwegian, Swedish, and probably other languages. The Esperanto alphabet is completed by the dead circumflex ˆ and AltGr+y, rendering ?. Some other possibly useful characters, beside the quotes „ « » ‹ › “ ”, are ¿ ¡ € £ ‰ ? ? ? § ¦ - —. If you're really interested in the details of the layout, please, try it out!
Yes, you can have it
For X11 (Linux and other Unices): us_tj2.tgz.
For Microsoft Windows: us_tj2c.zip. (older version, missing a number of characters. German, French, and Spanish are supported equally.)
Why do I use Linux ?
Years ago, I used Linux because it was new and interesting to me, and I had the time and motivation to just play around with it. The fact that I switched distributions all the time was a mark of that.
At some point or points in between, it might have been the freedom.
Now, the reason is: “Why not?”; I've used GNU/Linux for ages, I can almost always make it do what I want to do when I want it – it works. Windows or Mac OS X would probably also work just as well if I was as used to them as I am used to Linux. But I'm not.
Bringing synergy to the table
Once again, my desk is rather clean (a state that doesn't tend to last for long, let's see how long it holds this time), and I have decided to reintroduce a multi-head setup at my workstation. I've done this twice, and always enjoyed the space, and now I've also seen what it's like to have only a 20in wide flat screen sitting in front of you. In addition to that, I made sure there was a place for my laptop, as the recent acquisition of a PCMCIA network card made it desktop-compatible once again.
To spice things up a bit, and, I'll be honest, to spare myself the tedious labour of stretching toward my laptop whenever I want to use it, I've started using one quite magnificent piece of software called Synergy. What Synergy does is, quite simply, allow me to control my laptop with my desktop's keyboard and mouse (over the network). This feels just like having multiple X11 displays: I just move my mouse pointer off the left edge of my big screen and focus is on my laptop. This allows me, for instance, to have an IRC client running on the wee laptop screen without really being distracting :-)
By the way, the video deliberately placed on the right-hand screen in the photograph is one of Julien Doré's extremely arty «Les Limites»-clips. Grep Youtube for it if you will.