DD-WRT and IPv6

I recently purchased a WRT610N router to replace my old WRT54GL. The main reasons for change have been that the second (despite being one of the most versatile routers on the market) falls a bit short on network speed and memory. I have chosen the first b...

Simple way to manage lots of system users in distributed environments.

Few years ago I was working in design of a large cluster of systems to perform some actions (solving some mathematical models, sharding database). From the point of view of the systems, I had to deal with a number of pesky troubles. One of them was the us...

Hands on dreamplug

Update: Óscar García gently published a similar spanish version of this article. Couple of weeks ago I received my dreamplug, from NewIT. Though I knew some software troubles in device, I remains hopeful. However when I unpacked and powered on the plug...

New dtools and a bit more

Last week was crazy. I published a new release of dtools, the 4.2, a new web site for the dtools project and a couple of patches for version 5.0 of collectd. In the last months, dtools becomes in an useful tool for me. I use dtools everyday for system adm...

Integer conversions in bash

Since version 2, bash support a single aritmethic operations. Altough bash is not a mathematical shell (use bc instead), you can perform certain conversions using the bash arithmetic logic. For example you can remove the left zeroes in a decimal number wi...