code: func init() {
  	flag.Int64VarP(&number, "number", "n", 10, "how many lines to return")
  	flag.BoolVarP(&follow, "follow", "f", false, "follow file changes")
  	flag.BoolVarP(&reopen, "reopen", "F", false, "implies -f and re-opens moved / truncated files")
  }
docs: // "number" and "follow" are ignored for now, since the follower is the only behavior
  // until reading the end of the file is implemented