local config_file="$HOME/.wakeonlan/$1"
if [[ ! -f "$config_file" ]]; then
  print "$0: $1: There is no such device file." >&2
  return 1
fi

if (( ! $+commands[wakeonlan] )); then
  print "$0: Can't find wakeonlan. Is it installed?" >&2
  return 1
fi

wakeonlan -f "$config_file"