Refs
批处理图片用到的脚本：
#!/bin/bash
X="75"
Y="79"
dX="+0"
dY="+0"
for i in *.png;
do
image=`basename ${i} .png`
echo Input: ${i}
convert ${i} -gravity Center -crop ${X}x${Y}%${dX}${dY} ${i} && echo "Croping done"
convert ${i} -resize %50 ${i} && echo "Resizing done"
done
echo ===============
echo all done
log: $1. 2014-06-21;
