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nmap fast scan all ports target

Indent a one-liner.
Bash builtin type also indents the function.

Write comments to your history.
A null operation with the name 'comment', allowing comments to be written to HISTFILE. Prepending '#' to a command will *not* write the command to the history file, although it will be available for the current session, thus '#' is not useful for keeping track of comments past the current session.

Reboot without being root
For more, See: https://github.com/noureddin/bash-scripts/blob/master/user_scripts/userpower

Read aloud a text file in Ubuntu (and other Unixes with espeak installed

Fibonacci numbers with awk
Another combination of seq and awk. Not very efficient, but sufficiently quick.

Analyze awk fields
Breaks down and numbers each line and it's fields. This is really useful when you are going to parse something with awk but aren't sure exactly where to start.

Prefix command output with duration for each line
Prefixes each output line with time between it and the previous one.

faster version of ls *
I know its not much but is very useful in time consuming scripts (cron, rc.d, etc).

Save an HTML page, and covert it to a .pdf file
Uses htmldoc to perform the conversion


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