Change all fixed-path bash shebangs to /u/b/env bash outside test/

.github/workflows/build_test.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # SPDX-License-Identifier: LGPL-2.1-or-later
 
 set -ex

.github/workflows/run_mkosi.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # SPDX-License-Identifier: LGPL-2.1-or-later
 # shellcheck disable=SC2064
 

.github/workflows/unit_tests.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # SPDX-License-Identifier: LGPL-2.1-or-later
 
 # shellcheck disable=SC2206

.semaphore/semaphore-runner.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # SPDX-License-Identifier: LGPL-2.1-or-later
 
 set -eux

coccinelle/run-coccinelle.sh

@@ -1,5 +1,6 @@
-#!/bin/bash -e
+#!/usr/bin/env bash
 # SPDX-License-Identifier: LGPL-2.1-or-later
+set -e
 
 # Exclude following paths from the Coccinelle transformations
 EXCLUDED_PATHS=(

man/50-xdg-data-dirs.sh

@@ -1,11 +1,11 @@
-#!/bin/bash
+#!/bin/sh
 # SPDX-License-Identifier: CC0-1.0
 
 # set the default value
 XDG_DATA_DIRS="${XDG_DATA_DIRS:-/usr/local/share/:/usr/share}"
 
 # add a directory if it exists
-if [[ -d /opt/foo/share ]]; then
+if [ -d /opt/foo/share ]; then
     XDG_DATA_DIRS="/opt/foo/share:${XDG_DATA_DIRS}"
 fi
 

src/basic/check-filesystems.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # SPDX-License-Identifier: LGPL-2.1-or-later
 set -eu
 set -o pipefail

src/rpm/systemd-update-helper.in

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # SPDX-License-Identifier: LGPL-2.1-or-later
 set -eu
 set -o pipefail

tools/check-api-docs.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # SPDX-License-Identifier: LGPL-2.1-or-later
 set -eu
 set -o pipefail

tools/check-help.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # SPDX-License-Identifier: LGPL-2.1-or-later
 set -eu
 set -o pipefail

tools/get-coverity.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # SPDX-License-Identifier: LGPL-2.1-or-later
 
 # Download and extract coverity tool