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Hypnosis
rather don't depend on those sleepin'pills http://en.wikipedia.org/wiki/Counting_sheep

Fibonacci With Case
Returns the '$1'th Fibonacci number.

Setting global redirection of STDERR to STDOUT in a script
You have a script where =ALL= STDERR should be redirected to STDIN and you don't want to add "2>&1" at the end of each command... E.G.: $ ls -al /foo/bar 2>&1 Than just add this piece of code at the beginning of your script! I hope this can help someone. :)

Verify if ntpd is working properly
Used to verify if Network Time Protocol daemon is working properly.

Check the package is installed or not. There will show the package name which is installed.
The ^python$ is a package name patten. You can change whatever you want.

Find the package that installed a command

Find the biggest files
Show the top 10 file size

Using NMAP to check if a port is open or close
Using NMAP to check to see if port 22(SSH) is open on servers and network devices.

check open ports without netstat or lsof

Bypass with hexencoding, dump /etc/passwd


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