#!/usr/bin/env bash
trap 'kill -TERM 0' EXIT

s="<${1% }>"
files=(/var/irclogs/_esoteric/????-??-??.txt)

for file in "${file[@]:${#files[@]} - 30}"
do echo "$file"
	line=
	while read -r t n m; do [[ $n =~ $s ]] && line="$t $n $m"; done <"$file"
	[[ -n "$line" ]] && { printf '%s:%s\n' "${file##*/}" "$line"; exit; }
done &

wait && echo 'well, not lately'