portable bash shebang
diff --git a/spot-ingest/common/kafka_topic.sh b/spot-ingest/common/kafka_topic.sh
index ab95495..4c078c9 100755
--- a/spot-ingest/common/kafka_topic.sh
+++ b/spot-ingest/common/kafka_topic.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
#
# Licensed to the Apache Software Foundation (ASF) under one or more
diff --git a/spot-ingest/start_ingest_standalone.sh b/spot-ingest/start_ingest_standalone.sh
index 0e3bfd5..1a16612 100755
--- a/spot-ingest/start_ingest_standalone.sh
+++ b/spot-ingest/start_ingest_standalone.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
#
# Licensed to the Apache Software Foundation (ASF) under one or more
diff --git a/spot-ml/ml_ops.sh b/spot-ml/ml_ops.sh
index dd00bbc..abe3d06 100755
--- a/spot-ml/ml_ops.sh
+++ b/spot-ml/ml_ops.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
#
# Licensed to the Apache Software Foundation (ASF) under one or more
diff --git a/spot-ml/ml_test.sh b/spot-ml/ml_test.sh
index 3036c93..7a4971a 100755
--- a/spot-ml/ml_test.sh
+++ b/spot-ml/ml_test.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
#
# Licensed to the Apache Software Foundation (ASF) under one or more
@@ -80,4 +80,4 @@
--ldabeta ${LDA_BETA} \
--ldaoptimizer ${LDA_OPTIMIZER} \
--precision ${PRECISION} \
- $USER_DOMAIN_CMD
\ No newline at end of file
+ $USER_DOMAIN_CMD
diff --git a/spot-oa/runIpython.sh b/spot-oa/runIpython.sh
index 38a4121..26eaeff 100755
--- a/spot-oa/runIpython.sh
+++ b/spot-oa/runIpython.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
diff --git a/spot-setup/hdfs_setup.sh b/spot-setup/hdfs_setup.sh
index 86a26c0..df898c8 100755
--- a/spot-setup/hdfs_setup.sh
+++ b/spot-setup/hdfs_setup.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
#
# Licensed to the Apache Software Foundation (ASF) under one or more
