在没有提示的情况下在Linux/CentOS上安装和升级Java

Question

我有以下脚本在Linux OS上下载,安装或更新Java,例如CentOS.还有比周围更好的东西吗？这是一个非常麻烦的脚本,我想要一个更优雅的解决方案.

###INSTALL 
wget http://www.java.net/download/jdk7/binaries/jdk-7-ea-bin-b96-linux-x64-03_jun_2010.bin  
chmod a+x jdk-7-ea-bin-b96-linux-x64-03_jun_2010.bin  
echo y > answers.txt  
./jdk-7-ea-bin-b96-linux-x64-03_jun_2010.bin < answers.txt &>/dev/null  
mkdir /jdk7  
mv /root/jdk1.7.0 /jdk7  
ln -sf /jdk7/bin/java /usr/bin/java  
rm -f jdk-7-ea-bin-b96-linux-x64-03_jun_2010.bin  


###UPGRADE  
wget http://www.java.net/download/jdk7/binaries/jdk-7-ea-bin-b117-linux-x64-04_nov_2010.bin  
chmod a+x jdk-7-ea-bin-b117-linux-x64-04_nov_2010.bin  
echo y > answers.txt  
rm -rf /jdk7  
./jdk-7-ea-bin-b96-linux-x64-03_jun_2010.bin < answers.txt &>/dev/null  
mv /root/jdk1.7.0 /jdk7  
ln -sf /jdk7/bin/java /usr/bin/java  
rm -f jdk-7-ea-bin-b96-linux-x64-03_jun_2010.bin  

Answer 1

“改进”可以使用和yes来代替。echo y >answers.txt...< answers.txt

可能值得使用当前的下一个数字检查更新是否可用0X（以防 Oracle 不会更改 distr 命名约定），然后下载并安装它。但我不确定它是否真的值得。