package main

import (
	"fmt"
	"io/ioutil"
	"log"
	"sort"
	"strings"
)

func main() {
	const path = "/bin"
	files, err := ioutil.ReadDir(path)
	if err != nil {
		log.Fatal(err)
		return
	}

	names := make([]string, 0, len(files))
	for _, f := range files {
		name := f.Name()
		if strings.HasPrefix(name, ".") {
			continue
		}
		names = append(names, name)
	}
	sort.Strings(names)
	for _, name := range names {
		fmt.Println(name)
	}
}