Heres a list of blog posts avilable

2017-09-02 - Raspberry PI - Router Guide
2013-02-14 - Linux - Getting sshfs to work
2012-12-04 - Linux - sudo without a password
2012-10-10 - How to run tcpdump as root
2012-04-05 - Using gdb to debug a core file
2012-01-16 - Linux - Color Coding The Bash Prompt
2012-01-14 - Linux - Automatically set the DISPLAY environment variable in SSH connection
2012-01-06 - Adding extra swap space to linux