=====================安装jdk==========================
mkdir /soft
上传jdk的tar包
tar -zxvf jdk-8u161-linux-x64.tar.gz
ll
mv jdk1.8.0_161/ /usr/local/
/usr/local/
cd /usr/local/
ll
vi ~/.bash_profile
JAVA_HOME=/usr/local/jdk1.8.0_161
export PATH=$JAVA_HOME/bin:$PATH
CLASSPATH=$JAVA_HOME/jre/lib/ext:$JAVA_HOME/lib/tools.jar
export PATH JAVA_HOME CLASSPATH
source ~/.bash_profile
java -version
安装jdk
原文：http://blog.51cto.com/guoshaoliang789/2106678
