<oerjan> mkx bin/slashlearn//sep="/"; [[ "$0" == *//* ]] && sep="//"; [[ "$1" == ?*"$sep"* ]] || exit 1; key="$(echo "${1%%$sep*}" | lowercase)"; value="${1#*$sep}"; [ -e "wisdom/$topic" ] && verb="Relearned" || verb="Learned"; echo "$value" > "$(echo-p "wisdom/$key")" && echo "$verb \xc2\xab$key\xc2\xbb"

b=bottle a=({no+more+$b\s,1+$b,{2..99}+$b\s}+of+beer) w=on+the+wall
x=(Take+one+down,+pass+it+around Go+to+the+store+and+buy+some+more)
for i in {99..0};{
echo "${a[i]^} $w, ${a[i]}.
${x[!i]}, ${a[i-1]} $w."
}|tr + \