detect_os_type.sh

#!/bin/bash -e
# Copyright 2015 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.

function platform {
 PLATFORM=darwin
 case "$OSTYPE" in
   darwin*)
     PLATFORM=darwin
     ;;
   linux*)
     PLATFORM=ubuntu
     if [ -f /etc/redhat-release ] ; then
       PLATFORM=centos
     fi
     ;;
   *)
     echo "WARNING: Your platform is not currently supported!" >&2
     echo "Currently supported platforms are:" >&2
     echo "  darwin, ubuntu, and centos"
     exit 1
     ;;
 esac
 echo ${PLATFORM}
}