Extract several kinds of files, taken from: http://bashscripts.org/forum/viewtopic.php?f=28&t=231
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README
ex

README

Usage: x [files] [option]
extracts an archive file. options not shown below are passed to the extracting app.
use {} anywhere in those passed options and the file name (without the extension) of the archive will be placed there.

For help: ex -xh