echo -n "convert " > itcombino.sh; printf "IMG_%00004u.png " {1..1121} >> itcombino.sh; echo -n "-layers merge _final.png" >> itcombino.sh; chmod +x itcombino.sh && ./itcombino.sh

Combines an arbitrary number of transparent png files into one file

This one liner; combines all sequentially numbered files; in this example IMG_0001.png to IMG_1121.png by generating the shell script, making the shell script executable and then running the shell script to combine the 1121 png into a single png file named _final.png tested on Mac OS X 10.6.3 with ImageMagick 6.5.8-0 2009-11-22 Q16 http://www.imagemagick.org

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