hadoop/hadoop-yarn-project/hadoop-yarn/bin/yarn-daemon.sh

#!/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
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#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
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function hadoop_usage
{
  echo "Usage: yarn-daemon.sh [--config confdir] (start|stop|status) <hadoop-command> <args...>"
}

# let's locate libexec...
if [[ -n "${HADOOP_PREFIX}" ]]; then
  DEFAULT_LIBEXEC_DIR="${HADOOP_PREFIX}/libexec"
else
  this="${BASH_SOURCE-$0}"
  bin=$(cd -P -- "$(dirname -- "${this}")" >/dev/null && pwd -P)
  DEFAULT_LIBEXEC_DIR="${bin}/../libexec"
fi

HADOOP_LIBEXEC_DIR="${HADOOP_LIBEXEC_DIR:-$DEFAULT_LIBEXEC_DIR}"
# shellcheck disable=SC2034
HADOOP_NEW_CONFIG=true
if [[ -f "${HADOOP_LIBEXEC_DIR}/yarn-config.sh" ]]; then
  . "${HADOOP_LIBEXEC_DIR}/yarn-config.sh"
else
  echo "ERROR: Cannot execute ${HADOOP_LIBEXEC_DIR}/yarn-config.sh." 2>&1
  exit 1
fi

daemonmode=$1
shift

hadoop_error "WARNING: Use of this script to ${daemonmode} YARN daemons is deprecated."
hadoop_error "WARNING: Attempting to execute replacement \"yarn --daemon ${daemonmode}\" instead."

exec "${HADOOP_YARN_HOME}/bin/yarn" \
--config "${HADOOP_CONF_DIR}" --daemon "${daemonmode}" "$@"