Linux

PYTHON

Website with tools to check other info website:

mxtoolbox.com
just-ping.com
http://vger.kernel.org/mxverify.html


Scripts
Useful Linux Command

Linux command:

http://www.oreillynet.com/linux/cmd/

LPI ( Linux Professional Institute )
* LPIC-1
* LPIC-2
* LPIC-3
Download LPI Documents Click Here

CEH -  Certified Ethical Hacker
Download Hack Douments Click Here

SSL
cheapssls.com

Web Site:
linux.org​
freeos.com
oreilly.com
linux-sxs.org​
superuser.com​
beginlinux.com​
netadmintools.com

Ubuntu Basic Shell Script
Linux Fun:
http://www.cyberciti.biz/tips/unix-linux-draw-any-kind-of-boxes-around-text-editor.html