#!/bin/sh

if [ $# -lt 2 ]; then
  echo "usage: $0 <timeout> <filenames>\n  Waits until any of the given files has been created or the timeout (in seconds) expires." >&2
  exit 1
fi

TIMEOUT=$1
shift

wait-until-created "$@" &
PID=$!
(sleep ${TIMEOUT}; kill ${PID}) 2> /dev/null &
wait ${PID} 2> /dev/null