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copied!<ol> <li><p><a href="https://golang.org/pkg/os/#Rename" rel="nofollow noreferrer"><code>os.Rename</code></a> will work fine on directories, including windows. The only bit to question here is whether the operation is atomic, which on all major platforms the answer is yes.</p></li> <li><p>If you want to locate files and directories that match a pattern, you'll want to look at the filepath package. This will let you traverse a directory at which point you can inspect each file and match the name against your requirements. Look at <code>func Walk</code> and <code>type WalkFn</code> of the documentation. <a href="http://golang.org/pkg/path/filepath/#Walk" rel="nofollow noreferrer">http://golang.org/pkg/path/filepath/#Walk</a></p></li> </ol> <p>Here's an example of using <code>Walk</code> to locate png files in a given directory or any of its subdirectories:</p> <pre><code>package main import ( "flag" "fmt" "os" "path/filepath" ) var flagPath = flag.String("path", "", "recursively traverse path and print png filepaths to stdout.") func visit(path string, f os.FileInfo, err error) error { if filepath.Ext(path) == ".png" { fmt.Println(path) } return nil } func main() { flag.Parse() if *flagPath == "" { flag.Usage() return } filepath.Walk(*flagPath, visit) } </code></pre> <p>Here's a <code>func visit</code> that does what your asking about in the comment, be sure to import "strings":</p> <pre><code>func visit(path string, f os.FileInfo, err error) error { if name := f.Name(); strings.HasPrefix(name, "name_") { dir := filepath.Dir(path) newname := strings.Replace(name, "name_", "name1_", 1) newpath := filepath.Join(dir, newname) fmt.Printf("mv %q %q\n", path, newpath) os.Rename(path, newpath) } return nil } </code></pre>

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