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Script to generate Retina conpatible iamge.
#!/bin/bash
# How to use
# $makeRetinaImages.sh folder_name
# The folder name should end by '/'.
#
for file in `ls $1`; do
if expr "$file" : ".*\.png" >/dev/null; then
file2x=`echo $file|sed 's/\(.*\)\(\.png\)/\1\@2x\2/'`
mv $1$file $1$file2x
convert -geometry 50% $1$file2x $1$file
else
echo "only support .png file"
fi
done
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