diff --git a/README.md b/README.md
index 8eec7ad..ef2b8c9 100644
--- a/README.md
+++ b/README.md
@@ -1373,3 +1373,46 @@ sh.mkdirp('/test/mkdirp', function(err) {
   // the root '/' now contains a directory 'test' containing the directory 'mkdirp'
 });
 ```
+
+#### sh.du(dir, [options], callback)<a name="du"></a>
+
+Get the listing of files and deep files and size, returning an array of directory entries
+in the following form:
+```
+{
+  path: <String> the basename of the directory entry
+  size: <Number> the size in bytes of the entry
+}
+```
+
+By default `sh.du()` gives a shallow listing. If you want to follow
+directories as they are encountered, use the `recursive=true` option. NOTE:
+you should not count on the order of the returned entries always being the same.
+
+Example:
+
+```javascript
+/**
+ * Given a dir structure of:
+ *
+ * /dir
+ *  file1
+ *  file2
+ *  dir2/
+ *   file3
+ */
+
+// Shallow listing
+sh.du('/dir', function(err, entries) {
+  if(err) throw err;
+  // entries is now an array of 3 file/dir entries under /dir
+});
+
+// Deep listing
+sh.du('/dir', { recursive: true }, function(err, entries) {
+  if(err) throw err;
+  // entries is now an array of 3 file/dir entries under /dir.
+  // The entry object for '/dir2' also includes a `contents` property,
+  // which is an array of 1 entry element for `file3`.
+});
+```
\ No newline at end of file
diff --git a/dist/filer.js b/dist/filer.js
index a91af50..68b00f1 100644
--- a/dist/filer.js
+++ b/dist/filer.js
@@ -5861,6 +5861,82 @@ Shell.prototype.ls = function(dir, options, callback) {
   list(dir, callback);
 };
 
+/**
+ * Get the list of a directory, returning an array of
+ * file entries in the following form:
+ *
+ * {
+ *   path: <String> the basename of the directory entry
+ *   size: <Number> the size in bytes of the entry
+ *   contents: <Array> an optional array of child entries
+ * }
+ *
+ * By default du() will display all files list.
+ */
+Shell.prototype.du = function(dir, options, callback) {
+  var sh = this;
+  var fs = sh.fs;
+    
+  if(typeof options === 'function') {
+    callback = options;
+    options = {};
+  }
+    
+  options = options || {};
+  callback = callback || function(){};
+
+  if(!dir) {
+    callback(new Errors.EINVAL('Missing dir argument'));
+    return;
+  }
+
+  function list(path, callback) {
+    var pathname = Path.resolve(sh.pwd(), path);
+    var result = [];
+
+    fs.readdir(pathname, function(error, entries) {
+      if(error) {
+        callback(error);
+        return;
+      }
+
+      function getDirEntry(name, callback) {
+        name = Path.join(pathname, name);
+        fs.stat(name, function(error, stats) {
+          if(error) {
+            callback(error);
+            return;
+          }
+          var entry = {
+            path: Path.basename(name),
+            size: stats.size
+          };
+
+          if(stats.type === 'DIRECTORY') {
+            list(Path.join(pathname, entry.path), function(error, items) {
+              if(error) {
+                callback(error);
+                return;
+              }
+              entry.contents = items;
+              result.push(entry);
+              callback();
+            });
+          } else {
+            result.push(entry);
+            callback();
+          }
+        });
+      }
+
+      async.eachSeries(entries, getDirEntry, function(error) {
+        callback(error, result);
+      });
+    });
+  }
+
+  list(dir, callback);
+};    
 /**
  * Removes the file or directory at `path`. If `path` is a file
  * it will be removed. If `path` is a directory, it will be
diff --git a/npm-debug.log b/npm-debug.log
new file mode 100644
index 0000000..7493453
--- /dev/null
+++ b/npm-debug.log
@@ -0,0 +1,20 @@
+0 info it worked if it ends with ok
+1 verbose cli [ 'C:\\Program Files\\nodejs\\\\node.exe',
+1 verbose cli   'C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js',
+1 verbose cli   'install' ]
+2 info using npm@1.4.28
+3 info using node@v0.10.32
+4 verbose node symlink C:\Program Files\nodejs\\node.exe
+5 error Error: ENOENT, stat 'C:\Users\kevin\AppData\Roaming\npm'
+6 error If you need help, you may report this *entire* log,
+6 error including the npm and node versions, at:
+6 error     <http://github.com/npm/npm/issues>
+7 error System Windows_NT 6.2.9200
+8 error command "C:\\Program Files\\nodejs\\\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "install"
+9 error cwd C:\Users\kevin\Documents\GitHub\filer
+10 error node -v v0.10.32
+11 error npm -v 1.4.28
+12 error path C:\Users\kevin\AppData\Roaming\npm
+13 error code ENOENT
+14 error errno 34
+15 verbose exit [ 34, true ]
diff --git a/src/shell/shell.js b/src/shell/shell.js
index 3fd1a58..edb7de3 100644
--- a/src/shell/shell.js
+++ b/src/shell/shell.js
@@ -266,6 +266,84 @@ Shell.prototype.ls = function(dir, options, callback) {
   list(dir, callback);
 };
 
+/**
+ * Get the list of a directory, returning an array of
+ * file entries in the following form:
+ *
+ * {
+ *   path: <String> the basename of the directory entry
+ *   links: <Number> the number of links to the entry
+ *   size: <Number> the size in bytes of the entry
+ *   modified: <Number> the last modified date/time
+ *   type: <String> the type of the entry
+ *   contents: <Array> an optional array of child entries
+ * }
+ *
+ * By default du() will display all deep directory and files.
+ */
+Shell.prototype.du = function(dir, options, callback) {
+  var sh = this;
+  var fs = sh.fs;
+  if(typeof options === 'function') {
+    callback = options;
+    options = {};
+  }
+  options = options || {};
+  callback = callback || function(){};
+
+  if(!dir) {
+    callback(new Errors.EINVAL('Missing dir argument'));
+    return;
+  }
+
+  function list(path, callback) {
+    var pathname = Path.resolve(sh.pwd(), path);
+    var result = [];
+
+    fs.readdir(pathname, function(error, entries) {
+      if(error) {
+        callback(error);
+        return;
+      }
+
+      function getDirEntry(name, callback) {
+        name = Path.join(pathname, name);
+        fs.stat(name, function(error, stats) {
+          if(error) {
+            callback(error);
+            return;
+          }
+          var entry = {
+            path: Path.basename(name),
+            size: stats.size
+          };
+
+          if(stats.type === 'DIRECTORY') {
+            list(Path.join(pathname, entry.path), function(error, items) {
+              if(error) {
+                callback(error);
+                return;
+              }
+              entry.contents = items;
+              result.push(entry);
+              callback();
+            });
+          } else {
+            result.push(entry);
+            callback();
+          }
+        });
+      }
+
+      async.eachSeries(entries, getDirEntry, function(error) {
+        callback(error, result);
+      });
+    });
+  }
+
+  list(dir, callback);
+};
+
 /**
  * Removes the file or directory at `path`. If `path` is a file
  * it will be removed. If `path` is a directory, it will be
diff --git a/tests/index.js b/tests/index.js
index ff930da..8c6e543 100644
--- a/tests/index.js
+++ b/tests/index.js
@@ -54,6 +54,7 @@ require("./spec/shell/ls.spec");
 require("./spec/shell/rm.spec");
 require("./spec/shell/env.spec");
 require("./spec/shell/mkdirp.spec");
+require("./spec/shell/du.spec");
 
 // Ported node.js tests (filenames match names in https://github.com/joyent/node/tree/master/test)
 require("./spec/node-js/simple/test-fs-mkdir");
@@ -73,3 +74,4 @@ require("./bugs/issue254.js");
 require("./bugs/issue258.js");
 require("./bugs/issue267.js");
 require("./bugs/issue270.js");
+
diff --git a/tests/spec/cat.spec.js b/tests/spec/cat.spec.js
new file mode 100644
index 0000000..4bfda9b
--- /dev/null
+++ b/tests/spec/cat.spec.js
@@ -0,0 +1,84 @@
+var Filer = require('../../..');
+var util = require('../../lib/test-utils.js');
+var expect = require('chai').expect;
+
+describe('FileSystemShell.cat', function() {
+  beforeEach(util.setup);
+  afterEach(util.cleanup);
+
+  it('should be a function', function() {
+    var shell = util.shell();
+    expect(shell.cat).to.be.a('function');
+  });
+
+  it('should fail when files argument is absent', function(done) {
+    var fs = util.fs();
+    var shell = fs.Shell();
+
+    shell.cat(null, function(error, data) {
+      expect(error).to.exist;
+      expect(error.code).to.equal("EINVAL");
+      expect(data).not.to.exist;
+      done();
+    });
+  });
+
+  it('should return the contents of a single file', function(done) {
+    var fs = util.fs();
+    var shell = fs.Shell();
+    var contents = "file contents";
+
+    fs.writeFile('/file', contents, function(err) {
+      if(err) throw err;
+
+      shell.cat('/file', function(err, data) {
+        expect(err).not.to.exist;
+        expect(data).to.equal(contents);
+        done();
+      });
+    });
+  });
+
+  it('should return the contents of multiple files', function(done) {
+    var fs = util.fs();
+    var shell = fs.Shell();
+    var contents = "file contents";
+    var contents2 = contents + '\n' + contents;
+
+    fs.writeFile('/file', contents, function(err) {
+      if(err) throw err;
+
+      fs.writeFile('/file2', contents2, function(err) {
+        if(err) throw err;
+
+        shell.cat(['/file', '/file2'], function(err, data) {
+          expect(err).not.to.exist;
+          expect(data).to.equal(contents + '\n' + contents2);
+          done();
+        });
+      });
+    });
+  });
+
+  it('should fail if any of multiple file paths is invalid', function(done) {
+    var fs = util.fs();
+    var shell = fs.Shell();
+    var contents = "file contents";
+    var contents2 = contents + '\n' + contents;
+
+    fs.writeFile('/file', contents, function(err) {
+      if(err) throw err;
+
+      fs.writeFile('/file2', contents2, function(err) {
+        if(err) throw err;
+
+        shell.cat(['/file', '/nofile'], function(err, data) {
+          expect(err).to.exist;
+          expect(err.code).to.equal("ENOENT");
+          expect(data).not.to.exist;
+          done();
+        });
+      });
+    });
+  });
+});
\ No newline at end of file
diff --git a/tests/spec/shell/du.spec.js b/tests/spec/shell/du.spec.js
new file mode 100644
index 0000000..47c588d
--- /dev/null
+++ b/tests/spec/shell/du.spec.js
@@ -0,0 +1,131 @@
+var Filer = require('../../..');
+var util = require('../../lib/test-utils.js');
+var expect = require('chai').expect;
+
+describe('FileSystemShell.du', function() {
+  beforeEach(util.setup);
+  afterEach(util.cleanup);
+
+  it('should be a function', function() {
+    var shell = util.shell();
+    expect(shell.du).to.be.a('function');
+  });
+
+  it('should fail when dirs argument is absent', function(done) {
+    var fs = util.fs();
+    var shell = fs.Shell();
+
+    shell.cat(null, function(error, list) {
+      expect(error).to.exist;
+      expect(error.code).to.equal("EINVAL");
+      expect(list).not.to.exist;
+      done();
+    });
+  });
+
+  it('should return the file size', function(done) {
+    var fs = util.fs();
+    var shell = fs.Shell();
+    var contents = "a";
+    var contents2 = "bb";
+
+    fs.writeFile('/file', contents, function(err) {
+      if(err) throw err;
+
+      fs.writeFile('/file2', contents2, function(err) {
+        if(err) throw err;
+
+        shell.du('/', function(err, list) {
+          expect(err).not.to.exist;
+          expect(list.length).to.equal(2);
+
+          var item0 = list[0];
+          expect(item0.path).to.equal('file');
+          //expect(item0.links).to.equal(1);
+          expect(item0.size).to.equal(1);
+          //expect(item0.modified).to.be.a('number');
+          //expect(item0.type).to.equal('FILE');
+          expect(item0.contents).not.to.exist;
+
+          var item1 = list[1];
+          expect(item1.path).to.equal('file2');
+          //expect(item1.links).to.equal(1);
+          expect(item1.size).to.equal(2);
+          //expect(item1.modified).to.be.a('number');
+          //expect(item1.type).to.equal('FILE');
+          expect(item0.contents).not.to.exist;
+
+          done();
+        });
+      });
+    });
+  });
+
+  it('should return the deep contents of a dir tree', function(done) {
+    var fs = util.fs();
+    var shell = fs.Shell();
+    var contents = "a";
+
+    fs.mkdir('/dir', function(err) {
+      if(err) throw err;
+
+      fs.mkdir('/dir/dir2', function(err) {
+        if(err) throw err;
+
+        fs.writeFile('/dir/dir2/file', contents, function(err) {
+          if(err) throw err;
+
+          fs.writeFile('/dir/file', contents, function(err) {
+            if(err) throw err;
+
+            fs.writeFile('/dir/file2', contents, function(err) {
+              if(err) throw err;
+
+              shell.du('/dir', { recursive: true }, function(err, list) {
+                expect(err).not.to.exist;
+                expect(list.length).to.equal(3);
+
+                // We shouldn't rely on the order we'll get the listing
+                list.forEach(function(item, i, arr) {
+                  switch(item.path) {
+                  case 'dir2':
+                    //expect(item.links).to.equal(1);
+                    expect(item.size).to.be.a('number');
+                    //expect(item.modified).to.be.a('number');
+                    //expect(item.type).to.equal('DIRECTORY');
+                    expect(item.contents).to.exist;
+                    expect(item.contents.length).to.equal(1);
+                    var contents0 = item.contents[0];
+                    expect(contents0.path).to.equal('file');
+                    //expect(contents0.links).to.equal(1);
+                    expect(contents0.size).to.equal(1);
+                    //expect(contents0.modified).to.be.a('number');
+                    //expect(contents0.type).to.equal('FILE');
+                    expect(contents0.contents).not.to.exist;
+                    break;
+                  case 'file':
+                  case 'file2':
+                    //expect(item.links).to.equal(1);
+                    expect(item.size).to.equal(1);
+                    //expect(item.modified).to.be.a('number');
+                    //expect(item.type).to.equal('FILE');
+                    expect(item.contents).not.to.exist;
+                    break;
+                  default:
+                    // shouldn't happen
+                    expect(true).to.be.false;
+                    break;
+                  }
+
+                  if(i === arr.length -1) {
+                    done();
+                  }
+                });
+              });
+            });
+          });
+        });
+      });
+    });
+  });
+});