for f in P*[0-9].JPG; do b=`basename $f .JPG` ; convert -gamma 1.2 -resize 25% $f ${b}_hh.JPG ; convert -gamma 1.4 -resize 6.25% $f ${b}_hhhh.JPG ; done; for f in Image*[0-9].jpg; do b=`basename $f .jpg` ; convert -gamma 1.1 -resize 50% $f ${b}_h.jpg ; convert -gamma 1.3 -resize 12.5% $f ${b}_hhh.jpg ; done
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