Shell脚本 centOS7中自动安装JDK

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#切换到root权限sudo su#create java dirjava_file="/usr/local/java"if [ ! -d "$java_file" ];then mkdir $java_fileficd /usr/local/javaif [ ! -d "jdk-8u131-linux-x64.tar.gz" ];then wget --no-check-certificate --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie" http://download.oracle.com/otn-pub/java/jdk/8u131-b11/d54c1d3a095b4ff2b6607d096fa80163/jdk-8u131-linux-x64.tar.gzfiif [ ! -d "jdk1.8.0_131" ];then tar -xvf jdk-8u131-linux-x64.tar.gzfi#set environmentexport JAVA_HOME="/usr/local/java/jdk1.8.0_131"if ! grep "JAVA_HOME=/usr/local/java/jdk1.8.0_131" /etc/environmentthen    echo "JAVA_HOME=/usr/local/java/jdk1.8.0_131" | sudo tee -a /etc/environment    echo "export JAVA_HOME" | sudo tee -a /etc/environment    echo "PATH=$PATH:$JAVA_HOME/bin" | sudo tee -a /etc/environment    echo "export PATH" | sudo tee -a /etc/environment    echo "CLASSPATH=.:$JAVA_HOME/lib" | sudo tee -a /etc/environment    echo "export CLASSPATH" | sudo tee -a /etc/environmentfisource /etc/environmentecho "jdk is installed !"

如果系统中无 wget就安装一下

archlinux pacman -S wget

ubuntu debian apt-get install wget

fedora yun install wget

cenhOS yum -y install wget

等等..

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