volumetric-regimes-book/command-line/tools/separatecolors.sh

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# From: https://stackoverflow.com/questions/30518547/cmyk-overprinting-and-knockout-in-ghostscript
bn=$(basename $1 ".pdf")
gs -dBATCH -dNOPAUSE -dSAFER \
-sDEVICE=tiffsep \
-sOutputFile=$bn.tif \
$1