elasticsearch自动安装脚本(elasticsearch-7.7.1-x86

#! /bin/bash
#上传jdk-8u201-linux-x64.tar.gz和elasticsearch到/opt下
yum install -y gzip
#准备jdk环境
cd /opt
java -version
if [ $? -eq 0 ]
	then
		rpm -ivh elasticsearch-7.7.1-x86_64.rpm
		#手撕一个elasticsearch.yml.bak
		cat >/etc/elasticsearch/elasticsearch.yml.bak <> /etc/profile
		echo 'export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar'  >> /etc/profile
		echo 'export PATH=$PATH:$JAVA_HOME/bin'  >> /etc/profile
		source /etc/profile
fi