Tag Archives: ubuntu server 12.04

Time synchronization on Ubuntu 12.04LTS using NTP

To install the ntp, just enter this command at the terminal:

sudo apt-get install ntp

After installation, edit the default ntp configuration:

sudo nano /etc/ntp.conf

Commented out the default Ubuntu server,you can add your own time-servers here to synchronize with, http://www.pool.ntp.org/zone/europe or http://www.pool.ntp.org/zone/north-america lists:

After you are done with the configuration, just restart the ntp service:

sudo service ntp restart

To check if the NTP service is synchronizing:

sudo ntpq -c lpeer

To check the synchronization log:

sudo tail -f /var/log/syslog

Geeky Comparison with Windows clock after synchronization 🙂


If you are using the firewall, then just allows port 123 on UDP level.

Hope this will help you!

Please Remember me in your prayers!

How to install Java 6 on Ubuntu 12.04

First, we will check that java is already install or not on our system:

java -version

As, we can see that the java is not install on our system, so we will downloads the Java binary installer from Oracle. (In this example, we will download & install the jre, but the procedure is exactly the same for jdk).

Transfer the downloaded file (jre-6u31***) to the Ubuntu from Windows machine using WinSCP.

Now, move to the directory where you copy the jre file(in my case, it is in tmp directory)

cd /tmp/

Give execute permission to jre file.

sudo chmod +x jre-6u31-linux-x64.bin

Run the jre file.

sudo ./jre-6u31-linux-x64.bin

After execution, it makes a new directory in the same location where jre file reside.

Move this newly created directory to /usr/lib/jvm/

sudo mv jre1.6.0_31 /usr/lib/jvm/

Enter this command:

sudo update-alternatives --install "/usr/bin/java" "java" "/usr/lib/jvm/jre1.6.0_31/bin/java" 1

We are done!

Check the installed version of java.

java -version

Confirmation (Optional 🙂 ):

Here is a confirmation that we successfully installed the java on Ubuntu 12.04.

Hope this will help you!

Please Remember me in your prayers!

Step by Step tutorial to install Ubuntu Server 12.04

I hate to write the long articles, so I will make it short and sweet.

First, download the server version of Ubuntu from here,create the CD and boot the machine with the CD:

Once you successfully boot from CD, it will present you with the following screen in order to select your desired language and then press [Enter]

Select “Install Ubuntu Server

Select the language, you would like to use for the install

Select your Country/City

It’s time to detect your keyboard layout. If you want to detect it then select “Yes” or else use the predefined one by using the “No” option.

Choose the Keyboard layout from pre-defined list

Choose a hostname for Ubuntu Server

Setting up username and password

It will show you warning if you are using the weak password

Select “Yes“, if you want to encrypted private directory (but I will use No)

If it finds the correct time zone for your location you can select Yes. If it says none or is not the time you wish to use, select No.

You have to partition your hard disk before use it, here I am using the “use entire disk” option

Configuring the package manager and select continue

Select how do you want to update your sever

Select the software that you wish to install by highlighting them and hitting the spacebar

Select Yes to install the grub in the master boot record

Installation complete message here, you need to remove the CD

After reboot, Login to the server by entering the username and password you created during installation

Hope this will help you!

Please Remember me in your prayers!

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