Commands using du (244)

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

Hold off any screensavers/timeouts
Moves the mouse 1 pixel down and to the right, then immediately back again, every 4 minutes. This keeps screensavers from turning on. I have used this extensively and I've never even noticed the mouse movement because it is so subtle.

Scans for open ports using telnet

list all crontabs for users
additionally use "find /etc/cron*" for cronscripts

Print all 256 colors for testing TERM or for a quick reference
This is super fast and an easy way to test your terminal for 256 color support. Unlike alot of info about changing colors in the terminal, this uses the ncurses termcap/terminfo database to determine the escape codes used to generate the colors for a specific TERM. That means you can switch your terminal and then run this to check the real output. $ tset xterm-256color at any rate that is some super lean code! Here it is in function form to stick in your .bash_profile aa_256 () { ( x=`tput op` y=`printf %$((${COLUMNS}-6))s`; for i in {0..256}; do o=00$i; echo -e ${o:${#o}-3:3} `tput setaf $i;tput setab $i`${y// /=}$x; done ) } From my bash_profile: http://www.askapache.com/linux-unix/bash_profile-functions-advanced-shell.html

display a smiling smiley if the command succeeded and a sad smiley if the command failed
you could save the code between if and fi to a shell script named smiley.sh with the first argument as and then do a smiley.sh to see if the command succeeded. a bit needless but who cares ;)

Find the process you are looking for minus the grepped one
preferred way to query ps for a specific process name (not supported with all flavors of ps, but will work on just about any linux afaik)

Update all packages installed via homebrew
As of March 7, 2012: $ brew update - downloads upgraded formulas $ brew upgrade [FORMULA...] - upgrades the specified formulas $ brew outdated - lists outdated installations Note updating all packages may take an excruciatingly long time. You might consider a discriminating approach: run `brew outdated` and select specific packages needing an upgrade. For more information see homebrew's git repository: https://github.com/mxcl/homebrew

Install pip with Proxy
Installs pip packages defining a proxy

Get CPU thermal data on MacOS


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