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The newsletter of the SIE de Investigación y Enseñanza N. 38 - October/November 2010

SIEnews is 5 years old!
With this issue n.38, SIENews celebrates its 5th birthday. The first issue was sent back on September 1st 2005, and since then we have been publishing a new issue every two months or so. Other bulletins have tried to copy our philosophy and format, something we consider as a sincere form of flattering, but unfortunately none has lived so long as ours. If you have joined the IAC recently, and enjoy our SIENews, please note that we maintain a full, easy-to-browse archive of all past issues, in

SIEminar: Work@Home 2 by Ángel de Vicente on November 3rd, 12:30

Our first SIEminar on Working at Home took place a few years ago (see, and it was very successful, but we didn't deal with a couple of issues that come up quite often for people who work at home regularly: how to start a program at home or at the IAC and be able to later check on its progress (or continue work where we left it) from another place, and how to transfer files to and from the IAC network, or better still, work with those files as if they were in our local disk. In this talk, we will show you two tools for each of these needs (VNC, screen, FileZilla and sshfs), which can make your work at home much more efficient and enjoyable.

Meow! The CAT has a brand new website

As part of our efforts to make the websites managed by the "Area de Investigacion" in line with the most modern Web standards, and of streamlining and easing the editing of their content, the CAT website has been rebuilt from the ground up using Website Baker, the same tool used to develop websites for conferences and research projects. The maintainer of the CAT website will be especially happy, as now modifying its pages can be done directly on the server (virtually from any browser and operating system), instead of the cumbersome old way where pages were edited with Dreamweaver, copied to rives (test server), then copied to the external Web server. The Research Area Intranet has been rebuilt too following the same strategy. If you have any comments or suggestions about the above websites, please send them to Thanks!

Linux: Introduction to the Command Line

One of the most important features of Linux (and Unix-like SOs) is the possibility of doing almost everything from the command line (CL), which, while could be regarded by some people as "geeky", is generally much faster and more efficient than using applets or GUIs. Moreover, the vast array of CL commands and the many ways of combining them with pipes, redirections, scripts etc. make Linux even more powerful. Whether you are a Linux newbie and want to learn some basic CL tools, or are a Linux expert and wish to refresh or expand your CL skills, the free Introduction to the Command Line (Second Edition) PDF book is a good starting point. This book "teaches the most important Unix and Linux shell commands in a simple and straight forward manner. Command line programs covered in this book are demonstrated with typical usage to aid in the learning process and help you master the command line quickly and easily."

Cursor movement technology

Many things we now take for granted actually required a lot of work and ingenuity to be developed and implemented. Take for instance the apparently trivial connection between the mouse and the cursor on the screen: move the former, and the latter follows in perfect accord. But how is this possible? The following Flash demo, (turn the sound up), will show you one of the earliest successful realizations of linking mouse and cursor movements.
SIE de Investigación y Enseñanza :: N. 38 - October/November 2010 - Contact: