| #!/usr/bin/env bash | 
 |  | 
 | # Copyright 2017 The Bazel Authors. All rights reserved. | 
 | # | 
 | # Licensed under the Apache License, Version 2.0 (the "License"); | 
 | # you may not use this file except in compliance with the License. | 
 | # You may obtain a copy of the License at | 
 | # | 
 | #    http://www.apache.org/licenses/LICENSE-2.0 | 
 | # | 
 | # Unless required by applicable law or agreed to in writing, software | 
 | # distributed under the License is distributed on an "AS IS" BASIS, | 
 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | 
 | # See the License for the specific language governing permissions and | 
 | # limitations under the License. | 
 |  | 
 | # exit immediately if a command or pipeline fails, unless it is in a test expression | 
 | set -e | 
 |  | 
 | # treat unset variables as errors | 
 | set -u | 
 |  | 
 | # exit code of a pipeline is 0, or the non-zero exit code of the rightmost failing command | 
 | set -o pipefail |