Merge pull request kubernetes#62657 from matthyx/master

Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Update all script shebangs to use /usr/bin/env interpreter instead of /bin/interpreter

This is required to support systems where bash doesn't reside in /bin (such as NixOS, or the *BSD family) and allow users to specify a different interpreter version through $PATH manipulation.
https://www.cyberciti.biz/tips/finding-bash-perl-python-portably-using-env.html
```release-note
Use /usr/bin/env in all script shebangs to increase portability.
```

build/build-image/rsyncd.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #

build/common.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #

build/copy-output.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #

build/lib/release.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #

build/make-build-image.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #

build/make-clean.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #

build/package-tarballs.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright 2017 The Kubernetes Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");

build/release-in-a-container.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright 2017 The Kubernetes Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");

build/release.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #

build/run.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #

build/shell.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #

build/util.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #

cluster/addons/addon-manager/kube-addons.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #

cluster/centos/build.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #

cluster/centos/config-build.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #

cluster/centos/config-default.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #

cluster/centos/config-test.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #

cluster/centos/deployAddons.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #

cluster/centos/make-ca-cert.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #

cluster/centos/master/scripts/apiserver.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #

cluster/centos/master/scripts/controller-manager.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #

cluster/centos/master/scripts/flannel.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #

cluster/centos/master/scripts/post-etcd.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #

cluster/centos/master/scripts/scheduler.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #

cluster/centos/node/bin/mk-docker-opts.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #

cluster/centos/node/bin/remove-docker0.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #

cluster/centos/node/scripts/docker.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #

cluster/centos/node/scripts/flannel.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #

cluster/centos/node/scripts/kubelet.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #

cluster/centos/node/scripts/proxy.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #

cluster/centos/util.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #

cluster/clientbin.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #

cluster/common.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #

cluster/gce/config-common.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #

cluster/gce/config-default.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #

cluster/gce/config-test.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #

cluster/gce/delete-stranded-load-balancers.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #

cluster/gce/gci/configure-helper.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #

cluster/gce/gci/configure.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #

cluster/gce/gci/flexvolume_node_setup.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
@@ -119,7 +119,7 @@ generate_chroot_wrapper() {
 
       mkdir -p $wrapper_dir
       cat >$wrapper_path <<EOF
-#!/bin/bash
+#!/usr/bin/env bash
 chroot ${MOUNTER_PATH} ${driver_path} "\$@"
 EOF
 

cluster/gce/gci/health-monitor.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #

cluster/gce/gci/helper.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #

cluster/gce/gci/master-helper.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #

cluster/gce/gci/node-helper.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #

cluster/gce/list-resources.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #

cluster/gce/upgrade-aliases.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2018 The Kubernetes Authors.
 #

cluster/gce/upgrade.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #

cluster/gce/util.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #

cluster/get-kube-local.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #

cluster/juju/config-default.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #

cluster/juju/config-test.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #

cluster/juju/layers/kubernetes-e2e/actions/test

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -ex
 

cluster/juju/layers/kubernetes-master/actions/restart

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set +ex
 

cluster/juju/layers/kubernetes-master/exec.d/vmware-patch/charm-pre-install

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 MY_HOSTNAME=$(hostname)
 
 : ${JUJU_UNIT_NAME:=`uuidgen`}

cluster/juju/layers/kubernetes-worker/actions/pause

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -ex
 

cluster/juju/layers/kubernetes-worker/actions/resume

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -ex
 

cluster/juju/layers/kubernetes-worker/exec.d/vmware-patch/charm-pre-install

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 MY_HOSTNAME=$(hostname)
 
 : ${JUJU_UNIT_NAME:=`uuidgen`}

cluster/juju/prereqs/ubuntu-juju.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #

cluster/juju/util.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #

cluster/kube-down.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #

cluster/kube-up.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #

cluster/kube-util.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #

cluster/kubeadm.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #

cluster/kubectl.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #

cluster/kubemark/gce/config-default.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #