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  • \$\begingroup\$ Comments are not for extended discussion; this conversation has been moved to chat. \$\endgroup\$ Commented Jan 27, 2016 at 0:35
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    \$\begingroup\$ FYI, using the =(tail +2 $0) trick from my answer, you can create a single ZSH script which contains both the ImageMagick script and the PNG input file. \$\endgroup\$ Commented Jan 28, 2016 at 8:06