diff --git a/metatool b/metatool
index 723762f..57c7561 100755
--- a/metatool
+++ b/metatool
@@ -3,17 +3,38 @@
 set -e
 
 manyrepos_dir=.many
+manyrepos_branch=master
+metarepo_branch=meta
 
 init() {
   ls $manyrepos_dir |
-  while read path
+  while read project
   do
-    git subtree add --prefix=$path $manyrepos_dir/$path master
+    git subtree add --prefix=$project $manyrepos_dir/$project $manyrepos_branch
   done
 }
 
 sync() {
-  echo sync
+  ls $manyrepos_dir |
+  while read project
+  do
+    pull $project
+    push $project
+  done
+}
+
+pull() {
+  project=$1
+  git subtree pull --prefix=$project $manyrepos_dir/$project $manyrepos_branch
+}
+
+push() {
+  project=$1
+  git subtree push --prefix=$project $manyrepos_dir/$project $metarepo_branch
+  pushd $manyrepos_dir/$project
+  git merge $metarepo_branch --no-commit
+  git commit --no-edit
+  popd
 }
 
 print_usage() {