Commands by Mikachu (3)

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HourGlass
Displays an animated hourglass for x amount of seconds

Database size
Mysql command to list the disk usage of the database

Display a block of text with AWK
I find this terribly useful for grepping through a file, looking for just a block of text. There's "grep -A # pattern file.txt" to see a specific number of lines following your pattern, but what if you want to see the whole block? Say, the output of "dmidecode" (as root): $ dmidecode | awk '/Battery/,/^$/' Will show me everything following the battery block up to the next block of text. Again, I find this extremely useful when I want to see whole blocks of text based on a pattern, and I don't care to see the rest of the data in output. This could be used against the '/etc/securetty/user' file on Unix to find the block of a specific user. It could be used against VirtualHosts or Directories on Apache to find specific definitions. The scenarios go on for any text formatted in a block fashion. Very handy.

Recursive chmod all files and directories within the current directory

Stop Flash from tracking everything you do.
Brute force way to block all LSO cookies on a Linux system with the non-free Flash browser plugin. Works just fine for my needs. Enjoy.

Generate a (compressed) pdf from images
use imagemagik convert

Remove a range of lines from a file
Deletes lines to of a file. You must put the end line first in the range for the curly brace expansion, otherwise it will not work properly.

Perl One Liner to Generate a Random IP Address

Check variable has been set

Inverted cowsay
It's quite fun to invert text using "flip.pl" (ref: http://ubuntuforums.org/showthread.php?t=2078323 ). Slightly more challenging is to flip a whole "cowsay". :-)


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