javaUp.sh

#!/bin/sh
cd /opt
JRE=$(ls | grep jre*)
echo "would you like to remove $JRE, and update java? (y)es or else to quit:"
read word1
if [ $word1 = "yes" -o $word1 = "y" -o $word1 = "Y" ]; then
    echo "REMOVING JAVA!"
    sudo rm -r ./$JRE
    echo "ENTER THE URL FOR NEW JAVA TARBALL:"
    read word2
    sudo wget $word2 -O ./java.tar.gz
    sudo tar -zxvf java.tar.gz
    JRE=$(ls | grep jre*)
    sudo update-alternatives --install "/usr/bin/java" "java" "/opt/$JRE/bin/java" 1
    sudo update-alternatives --install "/usr/lib/mozilla/plugins/libjavaplugin.so" "mozilla-javaplugin.so" "/opt/$JRE/lib/amd64/libnpjp2.so" 1
    sudo update-alternatives --install "/usr/bin/javaws" "javaws" "/opt/$JRE/bin/javaws" 1
    sudo rm java.tar.gz
    echo "JAVA UPDATE COMPLETE"
else
    echo "OPERATION CANCELED"
fi