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dublado/gist:1477590

Created December 14, 2011 17:36
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cria thumbnail preenchendo canvas com cor branca
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gistfile1.sh
convert 1.jpg -resize 450x450 -background white -gravity center -extent 450x450 1_g.jpg
for img in *; do convert $img -resize 180x180 -background white -gravity center -extent 180x180 $img|echo $img ; done
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