<wob_jonas> `` sed -i \'s/M1/Finn|Galen Erso|Gial Ackbar|Grand Moff Tarkin|Greedo|Grievous|Han Solo|Jabba the Hutt|Jan Dodonna|Jango Fett|Jar Jar|Jar Jar Binks|Jocasta Nu|Jyn Erso|K-2SO|Kylo Ren|Lama Su|Lando Calrissian|Leia Organa|Luke Skywalker|Mace Windu|Maz Kanata/\' bin/starwars && cat bin/starwars

sep="//"
[[ "$1" == ?*"$sep"* ]] || exit 1
topic="$(echo "${1%%$sep*}" | lowercase)"
stuff="${1#*$sep}"
perl -i -p -e 's/\n/ /' "wisdom/$topic"
echo "$stuff" >>"wisdom/$topic"
echo -n "Learned '$topic': "
cat "wisdom/$topic"