Make scripts in hack compatible with NixOS (gardener#6155)

This should not make any difference on other OSes but improves
usability on NixOS by a lot.

Signed-off-by: Jens Schneider <schneider@23technologies.cloud>

hack/check-apidiff.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # Copyright (c) 2022 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
 #

hack/check-charts.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # Copyright (c) 2019 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
 #

hack/check-generate.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # Copyright (c) 2019 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
 #

hack/check.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # Copyright (c) 2019 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
 #

hack/clean.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # Copyright (c) 2019 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
 #

hack/compare-k8s-controllers.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!usr/bin/env bash
 #
 # Copyright (c) 2022 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
 #

hack/compare-k8s-feature-gates.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # Copyright (c) 2021 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
 #

hack/format.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # Copyright (c) 2019 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
 #

hack/generate-controller-registration.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # Copyright (c) 2019 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
 #

hack/generate-imagename-constants.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # Copyright (c) 2021 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
 #

hack/generate-parallel.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # Copyright (c) 2021 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
 #

hack/generate.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # Copyright (c) 2019 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
 #

hack/get-build-ld-flags.sh

@@ -1,4 +1,4 @@
-#!/bin/bash -e
+#!/usr/bin/env bash
 #
 # Copyright (c) 2018 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
 #
@@ -14,6 +14,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+set -e
+
 PACKAGE_PATH="${1:-k8s.io/component-base}"
 VERSION_PATH="${2:-$(dirname $0)/../VERSION}"
 PROGRAM_NAME="${3:-Gardener}"

hack/install-requirements.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # Copyright (c) 2019 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
 #

hack/install.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # Copyright (c) 2019 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
 #

hack/local-development/common/helpers

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!usr/bin/env bash
 #
 # Copyright (c) 2018 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
 #

hack/local-development/common/local-imagevector-overwrite

@@ -1,4 +1,4 @@
-#!/bin/bash -e
+#!/usr/bin/env bash
 #
 # Copyright (c) 2020 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
 #
@@ -14,6 +14,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+set -e
+
 __tmp_imagevector_overwrite=""
 mktemp_imagevector_overwrite() {
   if [ -z "$1" ] || [ -z "$2" ] || [ -z "$3" ]

hack/local-development/dev-setup

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # Copyright (c) 2018 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
 #

hack/local-development/dev-setup-register-gardener

@@ -1,4 +1,4 @@
-#!/bin/bash -e
+#!/usr/bin/env bash
 #
 # Copyright (c) 2018 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
 #
@@ -14,6 +14,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+set -e
+
 source $(dirname "${0}")/common/helpers
 
 IP_ROUTE=$(ip route get 1)

hack/local-development/start-admission-controller

@@ -1,4 +1,4 @@
-#!/bin/bash -e
+#!/usr/bin/env bash
 #
 # Copyright (c) 2020 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
 #
@@ -14,6 +14,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+set -e
+
 source $(dirname "${0}")/common/helpers
 
 kubeconfig="$KUBECONFIG"

hack/local-development/start-apiserver

@@ -1,4 +1,4 @@
-#!/bin/bash -e
+#!/usr/bin/env bash
 #
 # Copyright (c) 2021 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
 #
@@ -14,6 +14,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+set -e
 source $(dirname "${0}")/common/helpers
 
 kubeconfig="$KUBECONFIG"

hack/local-development/start-controller-manager

@@ -1,4 +1,4 @@
-#!/bin/bash -e
+#!/usr/bin/env bash
 #
 # Copyright (c) 2018 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
 #
@@ -14,6 +14,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+set -e
+
 source $(dirname "${0}")/common/helpers
 
 kubeconfig="$KUBECONFIG"

hack/local-development/start-extension-provider-local

@@ -1,4 +1,4 @@
-#!/bin/bash -e
+#!/usr/bin/env bash
 #
 # Copyright (c) 2021 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
 #
@@ -14,6 +14,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+set -e
+
 source $(dirname "${0}")/common/helpers
 REPO_ROOT=$(dirname "${0}")/../..
 ETCD_BACKUP_DIR=$REPO_ROOT/dev/local-backupbuckets

hack/local-development/start-gardenlet

@@ -1,4 +1,4 @@
-#!/bin/bash -e
+#!/usr/bin/env bash
 #
 # Copyright (c) 2018 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
 #
@@ -14,6 +14,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+set -e
+
 source $(dirname "${0}")/common/helpers
 source $(dirname "${0}")/common/local-imagevector-overwrite
 

hack/local-development/start-resource-manager

@@ -1,4 +1,4 @@
-#!/bin/bash -e
+#!/usr/bin/env bash
 #
 # Copyright (c) 2021 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
 #
@@ -14,6 +14,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+set -e
+
 source $(dirname "${0}")/common/helpers
 
 mktemp_kubeconfig

hack/local-development/start-scheduler

@@ -1,4 +1,4 @@
-#!/bin/bash -e
+#!/usr/bin/env bash
 #
 # Copyright (c) 2019 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
 #
@@ -14,6 +14,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+set -e
+
 source $(dirname "${0}")/common/helpers
 
 kubeconfig="$KUBECONFIG"

hack/local-development/start-seed-admission-controller

@@ -1,4 +1,4 @@
-#!/bin/bash -e
+#!/usr/bin/env bash
 #
 # Copyright (c) 2020 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
 #
@@ -14,6 +14,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+set -e
+
 source $(dirname "${0}")/common/helpers
 
 mktemp_kubeconfig

hack/tools/install-promtool.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # Copyright (c) 2021 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
 #

hack/update-codegen.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # Copyright (c) 2020 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
 #

hack/update-protobuf.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # Copyright (c) 2020 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
 #

hack/usage/delete

@@ -1,4 +1,4 @@
-#!/bin/bash -eu
+#!/usr/bin/env bash
 #
 # Copyright (c) 2018 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
 #
@@ -14,6 +14,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+set -e
+set -u
+
 RESOURCE="$1"
 NAME="$2"
 NAMESPACE=""

hack/usage/shoot-operation

@@ -1,4 +1,4 @@
-#!/bin/bash -eu
+#!usr/bin/env bash
 #
 # Copyright (c) 2018 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
 #
@@ -14,6 +14,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+set -e
+set -u
+
 NAME="$1"
 NAMESPACE="${2:-$(id -u -n)}"
 OPERATION="${3:-reconcile}"