http://www.imagemagick.org/Usage/thumbnails/#shadow

find . |grep -i jpg | awk '{system("identify -ping \"" $0 "\"" )}' |more


convert DSC05005.JPG -resize 1024x1024 DSC05005.JPG

#resize all pictures
find . |grep -i jpg | awk '{system("convert \"" $0 "\" -resize 1000x1000 \""$0"\"")}'

tif -> jpg
find . |grep -i tif$ | awk {'print "convert \""$0"\" \""$0".jpg\""'}
bmp -> jpg
find . |grep -i bmp$ | awk {'print "convert \""$0"\" \""$0".jpg\""'}

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