<izabera> ` echo \'for file do mapfile -t lines < "$file"; for (( i = ${#lines[@]} -1; i >= 0; i-- )) do printf "%s\\n" "${lines[i]}"; done done\' >> bin/tac

#!/bin/sh
cd /var/irclogs/_esoteric
grep -P -i -- "$1" $(ls ????-??-??.txt | head -n -1) | shuf -n 1