Software (and hardware)


I am an enthusiastic emacs user and I encourage any computer user willing to be productive at her/his computer environment to use it.

If you've never used it, Getting Started with Emacs is worth reading.


If you're upset by the false positives in the GMail's spam filter, here is a way to disable the spam filter in GMail


If apt crashes in your Debian GNU/Linux system with the message

Reading package lists... Error!
E: Read error - read (5 Input/output error)
E: The package lists or status file could not be parsed or opened.

try commenting-out some of the entries at /etc/apt/sources.list and then updating the package list (ie, run apt-get  update or equivalent)


If your NumLock key is unresponsive, not turning the numeric keypad on, try pressing Shift-NumLock.


Instruções para configuração do Exim4 num Sistema Debian-GNU/Linux para usar mx.inf.ufpr.br como relay de SMTP


If the browser's java plugin at your GNU/Linux system stopped working mysteriously, and /etc/sysctl.d/bindv6only.conf says net.ipv6.bindv6only = 1 try exchanging the 1 for a 0. See http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=560044 for the explanation.


Subversion is a free/open-source version control system. That is, Subversion manages files and directories, and the changes made to them, over time. This allows you to recover older versions of your data, or examine the history of how your data changed. It is a general system that can be used to manage any collection of files.

Subversion is a great tool for colaborative work. This page gives minimal instructions on getting access to my repositories.

I am not a Subversion user anymore. I converted all my repositories to git using git-svn.


Does your GNU/Linux system hangs at boot time while starting the udev subsytem?

Possible solutions are:

  1. Check out if there is a /etc/modprobe.conf file obscuring /etc/moprobe.d directory
  2. Add udevtimeout=3 to your boot parameters

For a long time, I was a user of the Palm Computing Platform. Here you'll find the page I maintained for the Palm Computing Platform through those times.

Nowadays I use Android.


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