jdk

#!/bin/bash
#https://mirrors.huaweicloud.com/java/jdk/8u202-b08/
tar xf jdk-8u301-linux-x64.tar.gz -C /usr/local
export JAVA_HOME="/usr/local/jdk1.8.0_301"
if ! grep "JAVA_HOME=/usr/local/jdk1.8.0_301" /etc/profile
then
    echo "JAVA_HOME=/usr/local/jdk1.8.0_301" | sudo tee -a /etc/profile
    echo "export JAVA_HOME" | sudo tee -a /etc/profile
    echo "PATH=$PATH:$JAVA_HOME/bin" | sudo tee -a /etc/profile
    echo "export PATH" | sudo tee -a /etc/environment
    echo "CLASSPATH=.:$JAVA_HOME/lib" | sudo tee -a /etc/profile
    echo "export CLASSPATH" | sudo tee -a /etc/profile
fi

#update environment
source /etc/profile
echo "jdk is installed !"