Mat Banik Mat Banik - 3 months ago 13
Java Question

Installing and Upgrading Java on Linux / CentOS without prompts

I have the scripts below to download, install or update Java on Linux OS such as CentOS.
Is there anything better than that around? It is a quite cumbersome script and I'd like a more elegant solution.

###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

An "improvement" can be using yes instead of echo y >answers.txt and ...< answers.txt.

It may worth to check if an update is available using the next number from current 0X (in case if oracle won't change distr naming convention) and then download and install it. But I'm not sure it really worths.