最終更新:2015-07-17 (金) 09:05:12 (3204d)
mogrify
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Use the mogrify program to resize an image, blur, crop, despeckle, dither, draw on, flip, join, re-sample, and much more. This tool is similiar to convert except that the original image file is overwritten (unless you change the file suffix with the -format option) with any changes you request.
http://www.imagemagick.org/script/mogrify.php
