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Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Sort file greater than a specified size in human readeable format including their path and typed by color, running from current directory
1. find file greater than 10 MB 2. direct it to xargs 3. xargs pass them as argument to ls

Determine if a port is open with bash
For times when netcat isn't available. Will throw a Connection refused message if a port is closed. Scriptable: $ (: /dev/null && echo "OPEN" || echo "CLOSED"

Convert the output of one or more (log, source code ...) files into html,
Requires the "enscript" package. frank@zappa:~# sudo apt-get install enscript Or http://www.codento.com/people/mtr/genscript/ "use your head"

Secure copy from one server to another without rsync and preserve users, etc
Source: http://unix.derkeiler.com/Newsgroups/comp.unix.shell/2008-04/msg00068.html

Delete empty directories
Recursively delete empty directories. Use with care.

List .log files open by a pid
Uses lsof to display the full path of ".log" files opened by a specified PID.

Rotate all jpeg images in current folder, rename them to EXIF datetime and set files timestamp to EXIF datetime

RTFM function
RTFMFTW.

list block devices
Shows all block devices in a tree with descruptions of what they are.


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