walk directory (Walk does not follow symbolic links)

gistfile1.go

package main                                                                                                                                                                                       
                                                                                                                                                                                                   
import (                                                                                                                                                                                           
    "flag"                                                                                                                                                                                         
    "fmt"                                                                                                                                                                                          
    "os"                                                                                                                                                                                           
    "path/filepath"                                                                                                                                                                                
)                                                                                                                                                                                                  
                                                                                                                                                                                                   
func main() {                                                                                                                                                                                      
    flag.Parse()                                                                                                                                                                                   
                                                                                                                                                                                                   
    root, err := filepath.Abs(flag.Arg(0))                                                                                                                                                         
                                                                                                                                                                                                   
    if err != nil {                                                                                                                                                                                
        panic(err.Error())                                                                                                                                                                         
    }                                                                                                                                                                                              
                                                                                                                                                                                                   
    walkFn := func(path string, info os.FileInfo, err error) error {                                                                                                                               
        if info.IsDir() {                                                                                                                                                                          
            fmt.Printf("Dir: %s\n", path)                                                                                                                                                          
        } else {                                                                                                                                                                                   
            fmt.Printf("File: %s, size: %d bytes\n", path, info.Size())                                                                                                                            
        }                                                                                                                                                                                          
        return nil                                                                                                                                                                                 
    }                                                                                                                                                                                              
                                                                                                                                                                                                   
    fmt.Printf("root: %s\n", root)                                                                                                                                                                 
                                                                                                                                                                                                   
    err = filepath.Walk(root, walkFn)                                                                                                                                                              
    if err != nil {                                                                                                                                                                                
        panic(err.Error())                                                                                                                                                                         
    }                                                                                                                                                                                              
}