<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

#!/bin/sh
cd /var/irclogs/_esoteric
if [ "$1" ]; then
    grep -P -i -- "$1" ????-??-??.txt | shuf -n 1| sed "s=<[^>]*> =="
else
    file=$(shuf -en 1 ????-??-??.txt)
    echo "$file:$(grep "<.*>" $file | shuf -n 1)" | sed "s=<[^>]*> =="
fi