Code: Select all
case:Desktop mike$ rm foo.jpg
case:Desktop mike$ file foo.jpg
foo.jpg: cannot open `foo.jpg' (No such file or directory)
case:Desktop mike$ convert Galactic_Cntr_full_cropped.jpg -resize 50% foo.jpg
Abort trap
case:Desktop mike$ file foo.jpg
foo.jpg: JPEG image data, JFIF standard 1.01
case:Desktop mike$ ls -lh foo.jpg
-rw-r--r-- 1 mike staff 2.6M Mar 18 23:10 foo.jpg
case:Desktop mike$ file foo.png
foo.png: cannot open `foo.png' (No such file or directory)
case:Desktop mike$ convert Galactic_Cntr_full_cropped.jpg -resize 50% foo.png
Abort trap
case:Desktop mike$ file foo.png
foo.png: PNG image, 1955 x 2550, 8-bit/color RGB, non-interlaced
case:Desktop mike$ ls -lh foo.png
-rw-r--r-- 1 mike staff 14M Mar 18 23:16 foo.png
case:Desktop mike$ convert --help | head
Version: ImageMagick 6.6.0-0 2010-03-18 Q16 http://www.imagemagick.org
Copyright: Copyright (C) 1999-2010 ImageMagick Studio LLC
Features: OpenMP OpenCL
Usage: convert [options ...] file [ [options ...] file ...] [options ...] file