diff --git a/asterix-installer/src/main/resources/zookeeper/start_zk.sh b/asterix-installer/src/main/resources/zookeeper/start_zk.sh
old mode 100644
new mode 100755
index 0a2b51e..86769cd
--- a/asterix-installer/src/main/resources/zookeeper/start_zk.sh
+++ b/asterix-installer/src/main/resources/zookeeper/start_zk.sh
@@ -1,3 +1,4 @@
+#!/usr/bin/env bash
 #/*
 # Copyright 2009-2013 by The Regents of the University of California
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -11,7 +12,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-#*/
+
 ZK_HOME=$1
 ZK_ID=$2
 JAVA_HOME=$3
diff --git a/asterix-installer/src/main/resources/zookeeper/stop_zk b/asterix-installer/src/main/resources/zookeeper/stop_zk
index 9bef86e..84d9b74 100644
--- a/asterix-installer/src/main/resources/zookeeper/stop_zk
+++ b/asterix-installer/src/main/resources/zookeeper/stop_zk
@@ -1,3 +1,5 @@
+#!/usr/bin/env bash
+
 ZK_HOME=$1
 shift 1
 for zk_host in  $@
diff --git a/asterix-installer/src/main/resources/zookeeper/zk.init b/asterix-installer/src/main/resources/zookeeper/zk.init
index 8ef6f5f..6b26363 100644
--- a/asterix-installer/src/main/resources/zookeeper/zk.init
+++ b/asterix-installer/src/main/resources/zookeeper/zk.init
@@ -1,3 +1,5 @@
+#!/usr/bin/env bash
+
 ZK_HOME=$1
 SERVER_JAVA_HOME=$2
 shift 2