Add install-java script

Author: chrishantha

install-java.sh

@@ -0,0 +1,153 @@
+#!/bin/bash
+# ----------------------------------------------------------------------------
+# Description : Installation script for setting up Java on Linux
+# Author      : M. Isuru Tharanga Chrishantha Perera
+# ----------------------------------------------------------------------------
+
+set -e
+
+java_dist=""
+java_dir="/usr/lib/jvm"
+
+function help {
+    echo ""
+    echo "Usage: "
+    echo "install_java.sh -f <java_dist> [-p] <java_dir>"
+    echo ""
+    echo "-f: The jdk tar.gz file"
+    echo "-p: Java installation directory"
+    echo ""
+}
+
+confirm () {
+    # call with a prompt string or use a default
+    read -r -p "${1:-Are you sure?} [y/N] " response
+    case $response in
+        [yY][eE][sS]|[yY]) 
+            true
+            ;;
+        *)
+            false
+            ;;
+    esac
+}
+
+# Make sure the script is running as root.
+if [ "$UID" -ne "0" ]; then
+	echo "You must be root to run $0. Try following"; echo "sudo $0"; 
+	exit 9
+fi
+
+
+while getopts ":f:p" opts
+do
+  case $opts in
+    f)
+        java_dist=${OPTARG}
+        ;;
+    p)
+        java_dir=${OPTARG}
+        ;;
+    \?)
+        help
+        exit 1
+        ;;
+  esac
+done
+
+if [[ ! -f $java_dist ]]; then
+    echo "Please specify the java distribution file (tar.gz)"
+    help
+    exit 1
+fi
+
+if [[ ! -d $java_dir ]]; then
+    echo "Please specify a valid java installation directory"
+    exit 1
+fi
+
+#If no directory was provided, we need to create the default one
+mkdir -p $java_dir
+
+# Extract Java Distribution
+
+java_dist_filename=$(basename $java_dist)
+
+dirname=$(echo $java_dist_filename | sed 's/jdk-\([78]\)u\([0-9]\{2\}\)-linux.*/jdk1.\1.0_\2/')
+
+extracted_dirname=$java_dir"/"$dirname
+
+if [[ ! -d $extracted_dirname ]]; then
+	echo "Extracting $java_dist to $java_dir"
+	tar -xf $java_dist -C $java_dir
+    echo "JDK is extracted to $extracted_dirname"
+else 
+    echo "JDK is already extracted to $extracted_dirname"
+fi
+
+
+if [[ ! -f $extracted_dirname"/bin/java" ]]; then
+    echo "Couldn't check the extracted directory. Please check the installation script"
+    exit 1
+fi
+
+# Install Demos
+
+demos_dist=$(dirname $java_dist)/$(echo $java_dist_filename | sed 's/jdk-\([78]u[0-9]\{2\}\)-linux-\(.*\).tar.gz/jdk-\1-linux-\2-demos.tar.gz/')
+
+if [[ -f $demos_dist && ! -d $extracted_dirname/demo ]]; then
+    # No demo directory
+    if (confirm "Extract demos?"); then
+        echo "Extracting $demos_dist to $java_dir"
+        tar -xf $demos_dist -C $java_dir
+    fi
+fi
+
+# Install Unlimited JCE Policy
+
+unlimited_jce_policy_dist=""
+
+if [[ "$java_dist_filename" =~ ^jdk-7.* ]]; then
+    unlimited_jce_policy_dist="$(dirname $java_dist)/UnlimitedJCEPolicyJDK7.zip"
+elif [[ "$java_dist_filename" =~ ^jdk-8.*  ]]; then
+    unlimited_jce_policy_dist="$(dirname $java_dist)/jce_policy-8.zip"
+fi
+
+if [[ -f $unlimited_jce_policy_dist ]]; then
+    if (confirm "Install Java Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy Files?"); then
+        echo "Extracting policy jars in $unlimited_jce_policy_dist to $extracted_dirname/jre/lib/security"
+        unzip -j -o $unlimited_jce_policy_dist *.jar -d $extracted_dirname/jre/lib/security
+    fi
+fi
+
+# Run update-alternatives commands
+
+commands=( "jar" "java" "javac" "javadoc" "javah" "javap" "javaws" "jcmd" "jconsole" "jarsigner" "jhat" "jinfo" "jmap" "jps" "jstack" "jstat" "jstatd" "keytool" "policytool" "wsgen" "wsimport" )
+
+if (confirm "Run update-alternatives commands?"); then
+	echo "Running update-alternatives --install for ${commands[@]} mozilla-javaplugin.so"
+
+	for i in "${commands[@]}"
+	do
+		sudo update-alternatives --install "/usr/bin/$i" "$i" "$extracted_dirname/bin/$i" 1
+	done
+
+	sudo update-alternatives --install "/usr/lib/mozilla/plugins/libjavaplugin.so" "mozilla-javaplugin.so" "$extracted_dirname/jre/lib/amd64/libnpjp2.so" 1
+
+	echo "Running update-alternatives --config"
+
+	for i in "${commands[@]}"
+	do
+		sudo update-alternatives --config "$i"
+	done
+
+	sudo update-alternatives --config "mozilla-javaplugin.so"
+fi
+
+# Configure Java Mission Control
+
+missioncontrol_config=$extracted_dirname/lib/missioncontrol/configuration/config.ini
+
+if ( (! grep -q mozilla "$missioncontrol_config") && confirm "Change default browser in Java Mission Control to Mozilla?"); then
+    echo org.eclipse.swt.browser.DefaultType=mozilla >> $missioncontrol_config
+fi