<hppavilion[2]> le/rn hppavilion/hppavilion is the generator including, but not limited to, hppavilion[1], hppavilion[2], and hppavilion[42]. hppavilion is of length 37-42i-28j+4k-28ij+38ik+62jk+20ijk

#!/bin/sh
find /var/irclogs/_esoteric -mindepth 1 -maxdepth 1 -type f -name '????-??-??.txt' | sort -r | xargs -d'\n' -r tac -- | grep "^..:..:..: <$1>" | head -n 1