diff --git a/desirae.js b/desirae.js
index 18d6b66..05d6755 100644
--- a/desirae.js
+++ b/desirae.js
@@ -242,6 +242,14 @@
   };
 
   // read config and such
+  Desi._initFileAdapter = function (env) {
+    if (!exports.window) {
+      // TODO pull state out of this later
+      Desi.realFsapi.create(Desi, env);
+    }
+    return PromiseA.resolve();
+  };
+
   Desi.init = function (desi, env) {
     console.log('');
     console.log('');
diff --git a/lib/node-adapters/fsapi-real.js b/lib/node-adapters/fsapi-real.js
index c58d226..3a5c01c 100644
--- a/lib/node-adapters/fsapi-real.js
+++ b/lib/node-adapters/fsapi-real.js
@@ -8,7 +8,7 @@ function create(Desi, options) {
   var fsapi = Desi.fsapi
     ;
 
-  options.blogdir = options.working_path;
+  options.blogdir = options.blogdir || options.working_path;
 
   fsapi.getMeta = function (dirnames, opts) {
     opts = opts || {};
@@ -53,7 +53,7 @@ function create(Desi, options) {
     return fsapi.copyfs(options.blogdir, files);
   };
 
-  fsapi.putFiles = function (files) {
+  fsapi.putFiles = function (files, opts) {
     files.forEach(function (file) {
       if (!file.contents || 'string' === typeof file.contents) {
         return;
@@ -62,12 +62,12 @@ function create(Desi, options) {
         file.contents = JSON.stringify(file.contents);
       }
       else if (/\.ya?ml$/i.test(file.path)) {
-        file.contents = exports.jsyaml.dump(file.contents); 
+        file.contents = Desi.YAML.stringify(file.contents); 
       }
     });
 
     // TODO size
-    return fsapi.putfs(options.blogdir, files);
+    return fsapi.putfs(options.blogdir, files, opts);
   };
 }
 
diff --git a/lib/node-adapters/fsapi.js b/lib/node-adapters/fsapi.js
index f662fb8..ddcbd78 100644
--- a/lib/node-adapters/fsapi.js
+++ b/lib/node-adapters/fsapi.js
@@ -270,8 +270,10 @@ function copyfs(blogdir, files) {
   });
 }
 
-function putfs(blogdir, files) {
-  var results = { errors: [] }
+function putfs(blogdir, files, options) {
+  options = options || {};
+
+  var putfsResults = { errors: [] }
     , dirpaths = {}
     ;
 
@@ -294,7 +296,7 @@ function putfs(blogdir, files) {
     return forEachAsync(Object.keys(dirpaths), function (pathname) {
       return mkdirp(pathname).catch(function (e) {
         // TODO exclude attempting to write files to this dir?
-        results.errors.push({
+        putfsResults.errors.push({
           type: 'directory'
 
         , directory: pathname
@@ -311,19 +313,23 @@ function putfs(blogdir, files) {
   }).then(function () {
     // TODO sort deletes last
     return forEachAsync(files, function (file) {
-      var p
-        ;
-
       // TODO use lastModifiedDate as per client request?
       // TODO compare sha1 sums for integrity
-      if (file.delete || !file.contents) {
-        p = fs.unlinkAsync(file.realPath);
-      } else {
-        p = fs.writeFileAsync(file.realPath, file.contents, 'utf8');
-      }
+      // NOTE existsAsync is backwards
+      return fs.existsAsync(file.realPath).then(function () {
+        return fs.writeFileAsync(file.realPath, file.contents, 'utf8');
+      }).catch(function (/*exists*/) {
+        if (file.delete || !file.contents) {
+          return fs.unlinkAsync(file.realPath);
+        }
 
-      return p.catch(function (e) {
-        results.errors.push({
+        if (false === options.replace || false === options.overwrite) {
+          throw new Error('EEXIST: the file already exists');
+        }
+
+        return fs.writeFileAsync(file.realPath, file.contents, 'utf8');
+      }).catch(function (e) {
+        putfsResults.errors.push({
           type: 'file'
 
         , file: file.realPath
@@ -341,7 +347,7 @@ function putfs(blogdir, files) {
       });
     });
   }).catch(function (e) {
-    results.error = {
+    putfsResults.error = {
       message: e.message
     , code: e.code
     , errno: e.errno
@@ -349,7 +355,7 @@ function putfs(blogdir, files) {
     , syscall: e.syscall
     };
   }).then(function () {
-    return results;
+    return putfsResults;
   });
 }
 /*