Oracle Java JDK 7 on Ubuntu Linux – Source or RPM Installation

Introduction

In the previous article we have discussed how to install OpenJDK java on ubuntu from the standard Ubuntu repository or Oracle’s Java JDK 7 using Personal Package Archives ( PPA ). This article will cover installation of Oracle Java JDK 7 from a source package or by converting RPM Java package to the Debian software package format.

Download Oracle Java JDK 7

First, we need to download Oracle Java JDK source package from the official Oracle website. Navigate to JDK Downloads, accept license terms and download jdk-7<version>-linux-<architecture>.tar.gz. Current version of this source package is jdk-7u11-linux-x64.tar.gz and this is also what we are going to use in this tutorial. Store this tarball source package into your home directory or some other arbitrary place.

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Ubuntu 14.04 Lost Password Recovery

If you have forgotten or lost your root password and unable to login to your Ubuntu 14.04 linux system then follow the instructions below to recover your root password.

Step 1 – Reboot to GRUB2 boot menu

First reboot/reset your system to GRUB2 boot loader menu. Navigate to the menu item you normally boot you Ubuntu system from and press “e” for edit.

Step 2 – Modify boot options

Find the line which starts with “linux”. Navigate to the end of the line and add:

init=/bin/bash

as illustrated on the screen-shot below:
Ubuntu 14.04 Lost Password Recovery Grub 2

Step 3 – Boot your system

Once you have changed boot options as indicated in the previous step press F10 to instruct your Ubuntu system to boot. Your system will boot and you will be provided with root command line prompt.

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steam client login Ubuntu 16.04 Xenial Xerus linux

How to install Steam on Ubuntu 16.04 Xenial Xerus

In this config you will learn how to install a digital distribution platform Steam on Ubuntu 16.04 Xenial Xerus Linux. This guide assumes that your system already have appropriate VGA driver installed.

Installation from UBUNTU Repository

The easiest way to install STEAM on Ubuntu 16.04 Xenial Xerus is by using apt-get command to fetch steam installed directly from Ubuntu’s multiverse repository:

$ sudo add-apt-repository multiverse
$ sudo apt-get install steam

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Setting up apt proxy Server Approx on Ubuntu Linux

Introduction

Approx is a proxy server for Debian archive files. Having such a service within your LAN with multiple Debian like systems will provide you with number of benefits such as update speed since any update package needs to be downloaded only once. This will also lower down Internet download usage requirements, etc. This article will describe a process of approx setup for Ubuntu Linux.

Installation

As any other installation from standard Ubuntu repository, installation of the approx apt proxy server is a fairy simple process. Install the approx apt proxy server with:

$ sudo apt-get install approx

The above command will also install all prerequisites including Internet superserver inetd, which is used to invoke the approx server.

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How to restart network on Ubuntu 16.04 Xenial Xerus Linux

The following linux commands will assist you with network restart procedure on Ubuntu 16.04 Xenial Xerus Linux. We will start with the most recommended commands and move down to more obscure or obsolete commands in case the above commands will fail from some reason.
Let’s begin with system and service manager by using systemctl command to restart network service:

$ sudo  systemctl restart NetworkManager.service

Next command service will restart a relevant networking System V init script:

$ sudo service network-manager restart

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Ubuntu Xenial Xerus 16.04 Linux ISO image download with zsync

zsync is a very handy download tool if you would like to keep your Ubuntu Xenial Xerus ISO image up to date without the need to re-download and entire ISO image every time there was an update. This is especially true with a daily build Ubuntu Xenial Xerus ISO images or if you have a limited download speed or bandwidth. In this case thezsync will allow you to download only that part of the ISO image which has been changed since your last download.

Prerequisites

To get begin let’s start by installation of zsync package:

# apt-get install zsync

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Allow ssh root login on Ubuntu 14.04 Linux server

By default the root ssh login to Ubuntu 14.04 Linux server is disable. This is a security feature and even though you chnage the root password the root ssh login will be denied showing message similar to the one below:

$ ssh root@10.1.1.12
root@10.1.1.12's password: 
Permission denied, please try again.
root@10.1.1.12's password: 
Permission denied, please try again.
root@10.1.1.12's password: 
Permission denied (publickey,password).

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