Use /usr/bin/env for scripts (#2315)

`/usr/bin/env bash` is more flexible than `/bin/bash` when using different OSes.
This also fixes files and script with wrong permissions.

.pre-commit-config.yaml

@@ -15,6 +15,9 @@ repos:
       - id: check-case-conflict
       - id: check-vcs-permalinks
       - id: check-json
+      - id: check-executables-have-shebangs
+      - id: check-shebang-scripts-are-executable
+      - id: check-symlinks
       - id: pretty-format-json
         args: [--autofix, --no-sort-keys, --no-ensure-ascii]
       - id: mixed-line-ending

tests/Makefile

@@ -37,7 +37,7 @@ run-conformance-tests: ## Run conformance tests
 		--restart=Never -- sh -c "go test -v . -tags conformance,experimental -args --gateway-class=$(GATEWAY_CLASS) \
 						        --supported-features=$(SUPPORTED_FEATURES) --version=$(NGF_VERSION) \
 								--report-output=output.txt; cat output.txt" | tee output.txt
-	bash scripts/check-pod-exit-code.sh
+	./scripts/check-pod-exit-code.sh
 	sed -e '1,/CONFORMANCE PROFILE/d' output.txt > conformance-profile.yaml
 	rm output.txt
 	grpc_core_result=`yq '.profiles[0].core.result' conformance-profile.yaml`; \
@@ -77,27 +77,27 @@ setup-gcp-and-run-nfr-tests: create-gke-router create-and-setup-vm nfr-test ## C
 
 .PHONY: create-gke-cluster
 create-gke-cluster: ## Create a GKE cluster
-	bash scripts/create-gke-cluster.sh $(CI)
+	./scripts/create-gke-cluster.sh $(CI)
 
 .PHONY: create-and-setup-vm
 create-and-setup-vm: ## Create and setup a GCP VM for tests
-	bash scripts/create-and-setup-gcp-vm.sh
+	./scripts/create-and-setup-gcp-vm.sh
 
 .PHONY: create-gke-router
 create-gke-router: ## Create a GKE router to allow egress traffic from private nodes (allows for external image pulls)
-	bash scripts/create-gke-router.sh
+	./scripts/create-gke-router.sh
 
 .PHONY: sync-files-to-vm
 sync-files-to-vm: ## Syncs your local NGF files with the NGF repo on the VM
-	bash scripts/sync-files-to-vm.sh
+	./scripts/sync-files-to-vm.sh
 
 .PHONY: run-tests-on-vm
 run-tests-on-vm: ## Run the functional tests on a GCP VM
-	bash scripts/run-tests-gcp-vm.sh
+	./scripts/run-tests-gcp-vm.sh
 
 .PHONY: nfr-test
 nfr-test: ## Run the NFR tests on a GCP VM
-	NFR=true CI=$(CI) bash scripts/run-tests-gcp-vm.sh
+	NFR=true CI=$(CI) ./scripts/run-tests-gcp-vm.sh
 
 .PHONY: start-longevity-test
 start-longevity-test: export START_LONGEVITY=true
@@ -135,19 +135,19 @@ cleanup-gcp: cleanup-router cleanup-vm delete-gke-cluster ## Cleanup all GCP res
 
 .PHONY: cleanup-router
 cleanup-router: ## Delete the GKE router
-	bash scripts/cleanup-router.sh
+	./scripts/cleanup-router.sh
 
 .PHONY: cleanup-vm
 cleanup-vm: ## Delete the test GCP VM and delete the firewall rule
-	bash scripts/cleanup-vm.sh
+	./scripts/cleanup-vm.sh
 
 .PHONY: delete-gke-cluster
 delete-gke-cluster: ## Delete the GKE cluster
-	bash scripts/delete-gke-cluster.sh
+	./scripts/delete-gke-cluster.sh
 
 .PHONY: add-local-ip-to-cluster
 add-local-ip-to-cluster: ## Add local IP to the GKE cluster master-authorized-networks
-	bash scripts/add-local-ip-auth-networks.sh
+	./scripts/add-local-ip-auth-networks.sh
 
 HELM_PARAMETERS += --set nameOverride=nginx-gateway --set nginxGateway.kind=skip --set service.create=false
 

tests/reconfig/scripts/create-resources-gw-last.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 num_namespaces=$1
 

tests/reconfig/scripts/create-resources-routes-last.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 num_namespaces=$1
 

tests/reconfig/scripts/delete-multiple.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 num_namespaces=$1
 

tests/scripts/add-local-ip-auth-networks.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 source scripts/vars.env
 

tests/scripts/check-pod-exit-code.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 CODE=$(kubectl get pod conformance -o jsonpath='{.status.containerStatuses[].state.terminated.exitCode}')
 if [ $CODE -ne 0 ]; then

tests/scripts/cleanup-router.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 source scripts/vars.env
 

tests/scripts/cleanup-vm.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 source scripts/vars.env
 

tests/scripts/create-and-setup-gcp-vm.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
 

tests/scripts/create-gke-cluster.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 source scripts/vars.env
 
@@ -34,5 +34,5 @@ gcloud container clusters create ${GKE_CLUSTER_NAME} \
 # Add current IP to GKE master control node access, if this script is not invoked during a CI run.
 if [ "${IS_CI}" = "false" ]; then
     SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
-    bash ${SCRIPT_DIR}/add-local-ip-auth-networks.sh
+    ./${SCRIPT_DIR}/add-local-ip-auth-networks.sh
 fi

tests/scripts/create-gke-router.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 source scripts/vars.env
 

tests/scripts/delete-gke-cluster.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 source scripts/vars.env
 

tests/scripts/remote-scripts/run-nfr-tests.sh

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

tests/scripts/remote-scripts/run-tests.sh

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

tests/scripts/run-tests-gcp-vm.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
 
@@ -14,7 +14,6 @@ gcloud compute scp --zone ${GKE_CLUSTER_ZONE} --project=${GKE_PROJECT} ${SCRIPT_
 gcloud compute ssh --zone ${GKE_CLUSTER_ZONE} --project=${GKE_PROJECT} username@${RESOURCE_NAME} \
     --command="export START_LONGEVITY=${START_LONGEVITY} &&\
         export STOP_LONGEVITY=${STOP_LONGEVITY} &&\
-		source /etc/profile &&\
         bash -s" < ${SCRIPT_DIR}/remote-scripts/${SCRIPT}; retcode=$?
 
 if [ $retcode -ne 0 ]; then

tests/scripts/sync-files-to-vm.sh

@@ -1,8 +1,8 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 source scripts/vars.env
 
-NGF_DIR=$(dirname "$PWD")
+NGF_DIR=$(dirname "$CUR")
 
 gcloud compute config-ssh --ssh-config-file ngf-gcp.ssh > /dev/null
 

tests/suite/scripts/longevity-wrk.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 SVC_IP=$(kubectl -n nginx-gateway get svc ngf-longevity-nginx-gateway-fabric -o jsonpath='{.status.loadBalancer.ingress[0].ip}')