查看电脑的操作位数:
uname -ar

jdk-8u131-linux-x64.tar.gz

rpm -qa|grep jdk

rpm -e --nodeps 软件名称 //如果检查到有安装就执行卸载命令

tar -xvf jdk-8u131-linux-x64.tar.gz -C /usr/local/

cd /usr/local

mv jdk1.8.0_131 jdk

vi /etc/profile

#java runtime seting
export JAVA_HOME=/usr/local/jdk
export CLASSPATH=$JAVA_HOME/lib:.
export PATH=$JAVA_HOME/bin:$PATH

source /etc/profile

java -version

class Hello{
	public static void main(String[] args){
	System.out.println("hello,java");
	}
}

javac Hello.java

#!/bin/bash

base_home='/data/test'
app_name='myjar'

pid=`ps -ef|grep ${app_name}|grep -v grep|grep -v restart|awk '{print$2}'`
if [ -n "${pid}" ] ;then
 kill -9 ${pid}
 sleep 10
fi

gclog_file=$base_home/log/gc.log
dump_dir=$base_home/heapdump
errorlogs_dir=$base_home/log

java -Xmx1g -Xms1g -XX:+UseParallelGC -XX:+UseParallelOldGC -XX:+PrintGCDetails -XX:+PrintGCTimeStamps -XX:+UseGCLogFileRotation -XX:GCLogFileSize=128M -XX:NumberOfGCLogFiles=1 -Xloggc:${gclog_file} -XX:HeapDumpPath=${dump_dir} -jar $base_home/app/${app_name}.jar --spring.config.location=$base_home/config/application.yml  $base_home/log/${app_name}_$(date +'%Y%m%d').log &

Error: Unable to access jarfile /app/myjar.jar

/datat/test/app/${app_name}.jar