code that walks a file system directory hierarchy renaming a bunch of ugly ogg files I pulled from a server with wget.

walker.go

package main

import (
	"fmt"
	"os"
	"path/filepath"
)

func main() {
	err := filepath.Walk(os.Getenv("PWD"), walk)
	if err != err && err != filepath.SkipDir {
		panic(err)
	}
}
func walk(path string, info os.FileInfo, err error) error {
	fmt.Printf("%v,\t%v,\t%v\n", path, info.Name(), err)
	if err != nil {
		fmt.Printf("%v,\t%v,\t%v\n", path, info.Name(), err)
		return filepath.SkipDir
	}

	if info.IsDir() {
		fmt.Println(os.Getenv("PWD"))
		fmt.Println(path)
		return os.Chdir(path)
	}

	if len(info.Name()) > 6 && filepath.Ext(info.Name()) == ".ogg" {
		fmt.Printf("%v -> %v\n", info.Name(), info.Name()[:2]+".ogg")
		err := os.Rename(info.Name(), info.Name()[:2]+".ogg")
		if err != nil {
			fmt.Println(err)
			return err
		}
		return nil
	}
	return os.Chdir("..")
}