Improve energy consumption with Ubuntu and Lenovo IdeaPad Z370 (sandy bridge-chipset)

Update 2015-03-15: As Antiplex mentioned in the comments, the resources are slighlty out of date. An update is pending

I use my laptop (Lenovo Z370, with Ubuntu 11.10) a lot in the college. Unfortunatly there aren’t enough plugs in the wall for all students and I’m not willing to bring a plug board with me every time. So my approach to the problem was to improve the energy consumption of my laptop. I already had an energy plan with display dimming after two minutes and deactivate bluetooth by default (I don’t have any bluetooth gadget, so why bother).

Continue reading Improve energy consumption with Ubuntu and Lenovo IdeaPad Z370 (sandy bridge-chipset)

Visualizing data with Gnuplot

On my pursuade for a tool to visualize simple list values I found gnuplot:

from Wikipedia:

gnuplot is a command-line program that can generate two- and three-dimensional plots of functions, data, and data fits.

I will focus on the capabilities of gnuplot on two-dimensional plots and in special howto visualize data without a corresponding second data value. But first here is the idea why I needed such a tool:

Continue reading Visualizing data with Gnuplot