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Display 16 largest installed RPMs in size order, largest first
Interesting to see which packages are larger than the kernel package. Useful to understand which RPMs might be candidates to remove if drive space is restricted.

Use lynx to run repeating website actions
This command will tell lynx to read keystrokes from the specified file - which can be used in a cronjob to auto-login on websites that give you points for logging in once a day *cough cough* (which is why I used -accept_all_cookies). For creating your keystroke file, use: $ lynx -cmd_log yourfile

Non Numeric Check
use to execute a block of code only if $var is numeric

Create md5sum of a directory

enable all bash completions in gentoo
enable each bash completion that you have installed at your system, that's very nice ;)

Using Git, stage all manually deleted files.
-u tells git to automatically stage all changes to files in the index (eg. deleted and modified files). See: http://stackoverflow.com/questions/1402776/how-do-i-commit-all-deleted-files-in-git http://kernel.org/pub/software/scm/git/docs/git-add.html

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"

Show URL/text in clipboard as QR code
Copy a URL (or Thai text, or whatever) and hit the keyboard shortcut for this fu to display it as a QR code. It's an "air gapped" way to send stuff to your phone [unlike google chart API etc.] as long as you watch out for cameras ;). dependencies [sudo apt-get install]: qrencode xclip xloadimage

Re-read partition table on specified device without rebooting system (here /dev/sda).

Detect encoding of a text file
This command gives you the charset of a text file, which would be handy if you have no idea of the encoding.


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