Browsing All posts tagged under »howto«

Debugging ARM programs inside QEMU

August 17, 2010

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A tutorial that shows how to debug an ARM Linux program inside a platform emulated with QEMU. The tutorial uses gdbserver to connect the program executing in the guest system to the debugger running on the host system.

How to watch Avatar

January 23, 2010

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An explanation of how XpanD 3D technology works with movies like Avatar.

Reinforce ssh security with Denyhosts

November 10, 2009

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…For years I’ve been saying security consists of protection, detection and response–and you need all three to have good security… March 2007, Bruce Schneier I always read Schneier’s site carefully, because everything he says is precise, consistent and grounded in experience. When I stumbled upon this concept of three components of security, I realized that […]

Ubuntu Live CD with LVM capability

September 26, 2009

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How to create an Ubuntu Live CD that can be used to install Ubuntu with LVM and to manage an existing system with LVM graphical tools.

Improve Linux boot time

September 9, 2009

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A few tips to speed up boot for your Linux box: 1. You need a tool to measure performance objectively: bootchart is very useful to track the lifetime of the processes, disk I/O and CPU load during boot. It needs no configuration whatsoever: you install it (for example using “apt-get install bootchart” in Debian-based systems) […]

Google Reader as a Twitter client

August 27, 2009

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I always have a Google Reader tab open in my browser, and I predict I will spend more time on it now that it’s becoming more similar to FriendFeed; for these reasons I tried to use it as a Twitter client. In order to see a Twitter timeline feed, I need to authenticate first. I […]

Simplest serial port terminal in C#

April 18, 2009

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Serial ports are not very useful for the end-user, but they are very important for administration of headless (without monitor) servers and for embedded device development. For example, if you are designing a chip that contains a micro-processor with a serial port (UART) to communicate with an external control (such as a graphical tool running […]