<Jafet> addquote <Bike> a dark day for all of humankind <zzo38> Bike: Wrong. Not all of humankind lives in the same timezone. <shachaf> a dark day for some of humankind <zzo38> OK

#!/bin/sh
topic=$(echo "$1" | tr A-Z a-z)
[ -e "wisdom/$topic" ] || { echo "$1? ¯\(°_o)/¯"; exit 1; }
cat "wisdom/$topic"