编写shell脚本自动安装JDK环境

1 #!/bin/bash
2 echo "install jdk"
3 A=`rpm -qa | grep jdk1.8 | wc -l`
4 if [ $A -eq 0 ]; then
5     rpm -ivh jdk-8u261-linux-x64.rpm
6     echo 'export JAVA_HOME=/usr/java/jdk1.8.0_261-amd64' >> /etc/profile
7     echo 'export PATH=$JAVA_HOME/bin:$PATH' >> /etc/profile
8     source /etc/profile
9 fi