Convert .psd files to .png files keeping the transparency.

to_png.sh

#!/usr/bin/env bash

#
# Convert .psd files to .png files keeping the transparency.
# It uses `imagemagick` library.
# Usage:
#
# sh to_png.sh path/
#
# Author: Rafael Rinaldi (rafaelrinaldi.com)
# Since: Oct 7, 2012
# 

for f in $1/*.psd;
	do
		base=${f%\.*};
		convert $f -background transparent -flatten $base.png
	done