Writing a Linux device driver module for kernel 3.0 or 2.6 with udev

http://pete.akeo.ie/2011/08/writing-linux-device-driver-for-kernels.html

How to deal with 4 insanely tough interview questions

http://www.thedailymuse.com/job-search/4-insanely-tough-interview-questions-and-how-to-nail-them/

Loading and unloading modules in Linux

# /sbin/lsmod
List of modules and the programs /kernel use


http://www.techrepublic.com/article/loading-and-unloading-modules-in-linux/5031591

rmmod ppp

Wiki Transimission Line

Wikipedia Transmission Line

http://en.wikipedia.org/wiki/Transmission_line

"However, when the voltage changes in a time interval comparable to the time it takes for the signal to travel down the wire, the length becomes important and the wire must be treated as a transmission line. Stated another way, the length of the wire is important when the signal includes frequency components with corresponding wavelengths comparable to or less than the length of the wire."

"A common rule of thumb is that the cable or wire should be treated as a transmission line if the length is greater than 1/10 of the wavelength. At this length the phase delay and the interference of any reflections on the line become important and can lead to unpredictable behavior in systems which have not been carefully designed using transmission line theory."

What is stray capacitance?

What is stray capacitance?
http://www.edaboard.com/thread179679.html

Wiki
http://en.wikipedia.org/wiki/Capacitance#Stray_capacitance

Convert .gif to png under Linux

convert image.gif image.png

http://superuser.com/questions/71028/batch-converting-png-to-jpg-in-linux

ubuntu backup solution

help center
https://help.ubuntu.com/community/BackupYourSystem

rsync and grsync
https://help.ubuntu.com/community/rsync#Grsync