When working in teams, we are sometimes required to share some password / keys with our team. The most common way for me is probably through email or some chat client. But even though its convenience it’s not actually a secure and a good practice. Especially if you are providing a service that deal with sensitive information.

Some simple approach would we communicating the password directly with a person through secure medium. One way to do it is both party ssh through a server and use talk client like write. But for some cases it’s quite impractical.

I've been tinkering with my [raspberry-pi][raspberry-pi] for quite some time now. What I like about it because it is cheap ($25), it's run Linux (especially debian based) and most of all it's have General Purpose Input Output pin. Since I was a kid, I always wanted to control electronic appliance remotely. Luckily my friend [@pimnijdam][pimnijdam] thought me how to control a relay board. Basically it's just like an electric switch that connect/disconnect current when you supply a low voltage.

So I connect one of the GPIO pin to the relay board and from the relay board to the lamp. Now I can control the desk lamp through my raspberry-pi by issuing a linux command. Had been successfully doing this, I wanted to the lamp not only from the raspberry pi but anywhere. The easiest way that I could think of is running a web server inside the raspberry-pi. The debian repository is quite awesome. So I could install a ruby/python and it only took a single command.

I’ve been playing around with twitter bootstrap. It’s like a css framework to help designer or developer create a nice and clean site. It’s offer grid system, predefine layout, button, javascript, carousel etc. You can build website in just a few hours. Very nice for prototyping.

I’ve been using it to build this blog since it was version 1. Recently i had a chance to upgrade it to version 2. The new version offer a lot of functionalities, one the feature that I play a lot is the responsive design.

If you having a problem in jekyll when it didn’t generate a post and there is no error in the log file. you might want to check the content if there is any UTF-8 character encoding such as this ±

The problem arise if you use ruby 1.9. It rejecting a file that contain non-ASCII character. it actually got invalid multibyte char (US-ASCII) error message

to solve this. I added this line to .bashrc or zshrc if you are using zsh

Just a couple days ago I found out therubygame.com which challenge us to solve a problem with ruby. The result were measured by the fastest, slowest, shortest, longest, cheaters (yup there are also some rule).

And also I was listening to an episode of ruby rouge on Benchmarking. And there is one tools called benchmark_suite.

So there is this challenge to capitalize first letter of every word. I want to compare my code to the fastest solution there. so i installed the gem, also the ruby-ffi gem that somewhat fix an error while I tried to run the benchmark.