Added full path to exports_setup (if you haven't yet done a boss-install)

doc/setup-ops.txt

@@ -91,9 +91,9 @@ nfs_server_flags="-u -t -n 16"
 
 Create /etc/exports.head . This should contain exports of /users/, /proj/,
 /groups/, and /var/ to all other control nodes BUT NOT testbed nodes. When this
-is done, run exports_setup on the boss node, which will create an /etc/exports
-file by concatenating this with dynamically-generated exports of directories to
-nodes that need them.
+is done, run $(BUILD_DIR)/tbsetup/exports_setup on the boss node, which will
+create an /etc/exports file by concatenating this with dynamically-generated
+exports of directories to nodes that need them.
 
 ##### Step 6 - Capture setup