environmentInstaller.txt

#!/bin/sh

verifyTomcat(){
 verify=`echo $CATALINA_HOME`
 retvalue=""
 if [[ "$verify" == "*/usr/share/apache-tomcat-?" || "$verify" == "*/opt/*/apache-tomcat-?" ]]; then
        echo "Tomcat is already installed"
        retvalue="true"
 else
        echo "Tomcat is not found in the directory.. Now installing Tomcat 7... !!"
        retvalue="false"
 fi

tomcaturl="http://tomcat.apache.org/download-70.cgi"

installTomcat(){
wget $tomcaturl
sudo tar zxpvf   /root/apache-tomcat-7.0.32.tar.gz -C /usr/share
echo "Setting up CATALINA_HOME to /usr/share/apache-tomcat-7.0.32"
CATALINA_HOME=/usr/share/apache-tomcat-7.0.32
echo "tomcat can be started by navigating to /usr/share/apache-tomcat-7.0.32 directory"
echo "Start tomcat using /bin/startup.sh"
echo "Stop tomcat using /bin/stop.sh"
}


retvalue=$( verifyTomcat )
if type -p java; then
    echo found java executable in PATH
    _java=java
    if [ "$retvalue" == "true" ]
    then
      echo "Tomcat is installed"
    else
      installTomcat
    fi
elif [ -n "$JAVA_HOME" && -x "$JAVA_HOME/bin/java" ];  then
    echo "found java executable in JAVA_HOME"
    _java="$JAVA_HOME/bin/java"
    if [ "$retvalue" == "true" ]
    then
       echo "Tomcat is installed"
    else
       installTomcat
    fi
else
    echo "no java is found in the executable path"
    echo "Please install Java 1.8 Version to continue running the keymaker PGP Encryption"
fi

if [[ "$_java" ]]; then
    version=$("$_java" -version 2>&1 | awk -F '"' '/version/ {print $2}')
    echo version "$version"
    pinto="*1.8*"

    if [[ "$version" == $pinto ]]; then
        echo "Success Java 1.8 seems to be already installed"
    else
        echo "Please install Java version 1.8 as the currently installed java version is $version"
    fi
fi