CentOS安装jdk1.8 及服务器之间的拷贝

下载jdk1.8：http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html

如果不是root用户需转到root用户下：[yingruyin@localhost ~]#su root

[root@localhost ~]#mkdir /usr/java

[root@localhost ~]#cd /usr/java

[root@localhost java]# rpm -ivh jdk-8u91-linux-x64.rpm

[root@localhost java]# mv jdk1.8.0_91 jdk1.8

[root@localhost java]#vi  /etc/profile

向文件里面追加以下内容：

JAVA_HOME=/usr/java/jdk1.8

JRE_HOME=/usr/java/jdk1.8/jre

PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin

CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JRE_HOME/lib

export JAVA_HOME JRE_HOME PATH CLASSPATH

使修改生效

[root@localhost java]# source /etc/profile   //使修改立即生效

[root@localhost java]#        echo $PATH   //查看PATH值

服务器之间的拷贝：

[root@localhost java]# vi /etc/ssh/ssh_config

向文件里面追加以下内容：//处理Host key verification failed的异常

StrictHostKeyChecking no

UserKnownHostsFile /dev/nul

[root@localhost java]# scp ./jdk-8u91-linux-x64.rpm root@192.168.236.132:/usr/java