Linux stuff from "The Geek Stuff"

Nice beginners guides:

The Geek Stuff

1. 6 Steps to Secure Your Home Wireless Network
2. Turbocharge PuTTY with 12 Powerful Add-Ons
3. 15 Examples To Master Linux Command Line History
4. Firefox Add-On: Hire 7 Personal Bodyguards to Browse Internet Securely
5. Get a Grip on the Grep! – 15 Practical Grep Command Examples
6. Backup and Restore MySQL Database Using mysqldump
7. How To Monitor Remote Linux Host using Nagios 3
8. Mommy, I found it! — 15 Practical Linux Find Command Examples
9. Bash Shell PS1: 10 Examples to Make Your Linux Prompt like Angelina Jolie
10. Top 5 Best Linux OS Distributions
11. Linux Crontab: 15 Awesome Cron Job Examples

Emacs and calc: Part 2, Advanced Calculations

Vectors, etc

Part 2

Emacs and Numbers: Part 1

This is pretty nice since it also does units:

emacs and calc: Part 1

textext for Inkscape: LaTeX Objects

Seems useful but I do not know if it works in Windows or just Linux.

textext

Native Android Applications

Not sure I really understand all of it but this is the link:

Native Android Apps