Golang : Read directory content with filepath.Walk()

Golang's filepath.Walk function allow a program to traverse a directory content and tree with ease. In this tutorial, we will see how to read a directory and display its content name with file size. This example will use the http://golang.org/pkg/path/filepath/#Walk function.


 package main

 import (

 func walkpath(path string, f os.FileInfo, err error) error {
 fmt.Printf("%s with %d bytes\n", path,f.Size())
 return nil

 func main() {
 root := flag.Arg(0) // 1st argument is the directory location
 filepath.Walk(root, walkpath)

execute go run readdirwalk.go ./ and see how it goes. You can change to different directory and test out the output as well. Hope this tutorial is helpful to you.

  See also : Golang : Read directory content with os.Open

By Adam Ng

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