diff --git a/command.go b/command.go
index 0a8254a..fc264f8 100644
--- a/command.go
+++ b/command.go
@@ -4,7 +4,7 @@ import(
   "log"
 )
 
-func cmdHead(config configCollect) {
+func cmdHead(config *configCollect) {
   rc := NewRepoCommits(config)
 
   rc.CollectDescs()
@@ -28,5 +28,16 @@ func cmdHead(config configCollect) {
 
 func cmdLs(config *configCollect) {
   rf := NewRepoFs(config)
-  log.Println(rf.EntryNode.String())
+  rf.EntryNode.Walk(ExpandOnlyDirectory, -1)
+
+  stackFolders := []*DirNode{rf.EntryNode}
+  for len(stackFolders) > 0 {
+    fold := stackFolders[0]
+    stackFolders = append(stackFolders[1:], fold.Folders...)
+
+    log.Println(fold.String())
+    for _, file := range fold.Files {
+      log.Println(file.String())
+    }
+  }
 }
diff --git a/commit.go b/commit.go
index b4c7d19..f0d465f 100644
--- a/commit.go
+++ b/commit.go
@@ -13,7 +13,7 @@ type Empty struct{}
 var empty Empty
 
 type RepoCommits struct {
-  Config configCollect
+  Config *configCollect
   CommitDesc map[string]string
   CommitContent map[string]*CommitNode
   Root map[*CommitNode]Empty
@@ -64,7 +64,7 @@ RepoDesc: %v
 `, nilable(c.RootId), nilable(c.CreatorName), nilable(c.Creator), nilable(c.Description), time.Unix(c.Ctime, 0), nilable(c.RepoName), nilable(c.RepoDesc))
 }
 
-func NewRepoCommits (config configCollect) *RepoCommits {
+func NewRepoCommits (config *configCollect) *RepoCommits {
   rc := new(RepoCommits)
   rc.Config =  config
   rc.CommitDesc = make(map[string]string)
diff --git a/fs.go b/fs.go
index b17d58d..eb8d345 100644
--- a/fs.go
+++ b/fs.go
@@ -53,6 +53,7 @@ type FileNode struct {
   Config *configCollect
   Ent *DirEnt
   Elem FileElem
+  AbsolutePath string
 }
 
 type RepoFs struct {
@@ -70,6 +71,7 @@ func NewRepoFs(config *configCollect) *RepoFs {
   rf.EntryNode.AbsolutePath = "/"
   rf.EntryNode.Files = make([]*FileNode,0)
   rf.EntryNode.Folders = make([]*DirNode,0)
+  rf.EntryNode.Config = config
 
   return rf
 }
@@ -90,10 +92,15 @@ func (dn* DirNode) String() string {
   return fmt.Sprintf("%v %v", dn.Ent.Id[:6], dn.AbsolutePath)
 }
 
+func (fn* FileNode) String() string {
+  return fmt.Sprintf("%v %v", fn.Ent.Id[:6], fn.AbsolutePath)
+}
+
 func NewFileNode(parent *DirNode, ent *DirEnt) *FileNode {
   fn := new (FileNode)
   fn.Ent = ent
   fn.Config = parent.Config
+  fn.AbsolutePath = parent.AbsolutePath + ent.Name
 
   return fn
 }
@@ -144,22 +151,27 @@ const (
   ExpandAll
 )
 
-func (dn* DirNode) Expand(strat ExpandStrat) {
-  for _, cdn := range dn.Folders {
-    cdn.Parse()
-  }
+func (dn* DirNode) Walk(strat ExpandStrat, depth int) {
+  qNode := []*DirNode{dn}
+  for len(qNode) > 0 && depth != 0{
+    if depth > 0 { depth = depth - 1 }
 
-  if strat == ExpandAll {
-    for _, cfn := range dn.Files {
-      cfn.Parse()
+    cursor := qNode[0]
+    qNode = qNode[1:]
+    cursor.Parse()
+
+    for _, ndn := range dn.Folders {
+      qNode = append(qNode, ndn)
+    }
+
+    if ExpandAll == strat {
+      for _, nfn := range dn.Files {
+        nfn.Parse()
+      }
     }
   }
 }
 
-func (dn* DirNode) Walk(strat ExpandStrat) {
-
-}
-
 /*func (rf* RepoFs) Walk() {
   qPathIds := make([]string, 0)
   qPathIds = append(qPathIds, rf.PathId)
diff --git a/seafile_recovery.go b/seafile_recovery.go
index a04a83d..4f851f5 100644
--- a/seafile_recovery.go
+++ b/seafile_recovery.go
@@ -19,10 +19,10 @@ Options:
   -h --help  Show this screen
   --storage=<sto>  Set Seafile storage path [default: ./storage]`
 
-  var config configCollect
+  config := new(configCollect)
   opts, err := docopt.ParseDoc(usage)
   if err != nil { log.Fatal(err) }
-  opts.Bind(&config)
+  opts.Bind(config)
 
   checkRootFolder(config.Storage)
   rexists := repoExistsIn(config.Storage, config.RepoId)
@@ -32,7 +32,7 @@ Options:
     cmdHead(config)
   } else if config.Ls {
     if !rexists["fs"] { log.Fatal("No fs folder found for repo ",config.RepoId) }
-    cmdLs(&config)
+    cmdLs(config)
   } else if config.Dump {
     if !rexists["fs"] { log.Fatal("No fs folder found for repo ",config.RepoId) }
     if !rexists["blocks"] { log.Fatal("No blocks folder found for repo ",config.RepoId) }