hadoop-daemons.sh
6c2cef95801efuture

hadoop-daemons.sh
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			#!/usr/bin/env bash

			# Licensed to the Apache Software Foundation (ASF) under one or more
			# contributor license agreements. See the NOTICE file distributed with
			# this work for additional information regarding copyright ownership.
			# The ASF licenses this file to You 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.


			# Run a Hadoop command on all slave hosts.

			usage="Usage: hadoop-daemons.sh [--config confdir] [--hosts hostlistfile] [start\|stop] command args..."

			# if no args specified, show usage
			if [ $# -le 1 ]; then
			echo $usage
			exit 1
			fi

			bin=`dirname "${BASH_SOURCE-$0}"`
			bin=`cd "$bin"; pwd`

			DEFAULT_LIBEXEC_DIR="$bin"/../libexec
			HADOOP_LIBEXEC_DIR=${HADOOP_LIBEXEC_DIR:-$DEFAULT_LIBEXEC_DIR}
			. $HADOOP_LIBEXEC_DIR/hadoop-config.sh

			exec "$bin/slaves.sh" --config $HADOOP_CONF_DIR cd "$HADOOP_PREFIX" \; "$bin/hadoop-daemon.sh" --config $HADOOP_CONF_DIR "$@"