Commands using dmesg (14)

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

Backup file, create dir and set perms in one shot
Prior to working on/modifying a file, use the 'install -m' command which can both copy files, create directories, and set their permissions at the same time. Useful when you are working in the public_html folder and need to keep the cp'd file hidden.

Scan Network for Rogue APs.
I've used this scan to sucessfully find many rogue APs on a very, very large network.

list files recursively by size

Quick way to sum every numbers in a file written line by line
If you have a file full of numbers written line by line, you can sum every line to get the total. With a file like this: 3443535 9878977 67554 987798 232324 you will got: 14610188

import a new set of files located in a local directory into a remote Subversion repository

SED - Substitute string in next line
source: http://sed.sourceforge.net/sed1line.txt

a function to put environment variable in zsh history for editing
This only makes sense if you are using command line editing. Create the function in your current zsh session, then type eve PATH go 'UP' in your history and notice the current (editable) definition of PATH shows up as the previous command. Same as doing: PATH="'$PATH'" but takes fewer characters and you don't have to remember the escaping.

Create subdirectory and move files into it
With this form you dont need to cut out target directory using grep/sed/etc.

remove password from openssl key file
Strip a password from a openssl key to use with apache httpd server


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