Script content
#!/bin/bash
mkdir /usr/java
tar -zxvf jdk* -C /usr/java
cd /usr/java/jdk*
home=`pwd`
echo $home
echo "export JAVA_HOME=${home}" >> /etc/profile
echo "export PATH=\$JAVA_HOME/bin:\$PATH" >> /etc/profile
echo "export CLASSPATH=\$JAVA_HOME/lib/dt.jar:\$JAVA_HOME/lib" >> /etc/profile
source /etc/profile
echo "JDK安装完毕！！！\r下面进行测试"
echo "java版本为："
java -version
echo "脚本执行完毕！！！"
Just download a jdk package and place it in the same directory to execute it. Ignored version processing has been done, and any version can be used universally.
Note that the sh script cannot be named jdk, otherwise it will match the error
