<b_jonas> slashlearn farbfeld//zzo38\'s Farbfeld utilities is a package of command-line programs (with rather strange command-line syntax) for manipulating images in a specific raw format called farbfeld. It\'s somewhat underdocumented. http://zzo38computer.org/fossil/farbfeld.ui/home

sep='//`'
[[ "$1" == ?*"$sep"* ]] || { echo 'Usage: `# <comment>'"$sep"'<command>' >&2 ; exit 1; }
nur "${1#*$sep}"