Refs #25328 Use a portable shebang

BSD systems don't place bash in /bin and a lot of the dart tools
hardcode a #!/bin/bash shebang that fails the 'all' target build
(not able to execute dart2js since the interpreter is not found).

Solve the issue by using #!/usr/bin/env as the shebang. For scripts
that need to pass arguments to bash modify the script to use the set
command as the first executed line of shell.

BUG=
R=whesse@google.com

Review URL: https://codereview.chromium.org/1552313002 .

pkg/analysis_server/tool/spec/generate_files

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.

pkg/analyzer/tool/generate_files

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.

runtime/tools/bmu_benchmark_gallery.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a

sdk/bin/dart

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.

sdk/bin/dart2js

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.

sdk/bin/dart2js_developer

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.

sdk/bin/dart2js_sdk

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.

sdk/bin/dartanalyzer

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.

sdk/bin/dartanalyzer_developer

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.

sdk/bin/dartanalyzer_sdk

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.

sdk/bin/dartdoc

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.

sdk/bin/dartfmt

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.

sdk/bin/dartfmt_sdk

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.

sdk/bin/pub

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.

sdk/bin/pub_sdk

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.

site/try/create_manifest.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.

tests/standalone/io/create_sample_certificates.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.

tools/apps/update_homebrew/bin/ssh_with_key

@@ -1,2 +1,2 @@
-#!/bin/bash
+#!/usr/bin/env bash
 ssh -i $SSH_KEY_PATH $@

tools/apps/update_homebrew/bin/update_homebrew.dart

@@ -186,7 +186,7 @@ class Dart < Formula
 
   def shim_script target
     <<-EOS.undent
-      #!/bin/bash
+      #!/usr/bin/env bash
       exec "#{prefix}/#{target}" "\$@"
     EOS
   end

tools/bots/run_android_tests.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.

tools/create_debian_chroot.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a

tools/dartium/download_shellscript_template.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.

tools/dartium/start_dartium_roll.sh

@@ -1,4 +1,6 @@
-#!/bin/bash -e
+#!/usr/bin/env bash
+
+set -e
 
 # Requirements:
 #    sudo apt-get install xclip

tools/dom/scripts/go.sh

@@ -1,5 +1,8 @@
-#!/bin/bash -x
+#!/usr/bin/env bash
 #
+
+set -x
+
 #   go.sh [systems]
 #
 # Convenience script to generate systems.  Do not call from build steps or tests

tools/precompilation/test_linux.sh

@@ -1,4 +1,6 @@
-#!/bin/bash -ex
+#!/usr/bin/env bash
+
+set -ex
 
 # Usage:
 #   cd sdk

tools/precompilation/test_linux_simarm.sh

@@ -1,4 +1,6 @@
-#!/bin/bash -ex
+#!/usr/bin/env bash
+
+set -ex
 
 # Usage:
 #   cd sdk

tools/precompilation/test_macos.sh

@@ -1,4 +1,6 @@
-#!/bin/bash -ex
+#!/usr/bin/env bash
+
+set -ex
 
 # Usage:
 #   cd sdk

tools/presubmit.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a

tools/testing/bin/jsshell

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.