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The upgrade from Raspbian Wheezy to Raspbian 8 Jessie is a fairly simple procedure. However, a caution must be exercised as there is always a chance to break the entire system. The less packages and services are installed the more likely you will be able successfully upgrade your Raspbian Linux system.

In this config you will learn what is a referer spam traffic, how it is generated and most importantly how to block referer spam on the Linux apache webserver. A referer spam is yet another nuisance invented by spammers causing unaware system admins, marketers or site owners to inadvertently visit or link back to the spammer's site via publicly published access or referer logs on a victim's website. This may consequently lead to a lower search engine ranking, as well as to drain your server's resources.

Before we talk about what is a Sticky bit let's start by explaining why do we need it. For example we have a directory /var/share somewhere on the filesystem with a full access for all permission groups that is owner, group and any, thus all permission bits are set to "on".

phpVirtualBox allows you to manage whether locally or remotely your virtual machines running under VirtualBox via web-based interface. This config will describe a installation and configuration of phpVirtualBox on Debian Linux.

This config is intended to help reader to quickly setup a Django Web development environment with Python 3 and MySQL on Debian Linux 8 Jessie. The outcome will be installed Django Framework ( 1.7.1 ) and Python ( 3.4.2 ). Once completed and would like to learn more by creating your first Django app you can continue with the official Django Documentation by skipping the first part about settings up the Django environment.

Amazon currently accepts limited number of ebook formats that you can directly send to your Amazon Kindle. In this config we are going to show few Linux tools which may assist you with the conversion between various Document and eBook formats.

We get asked about Linux certification frequently. Candidates generally want to know if it is worth their time and effort to pursue a certification. In my opinion, the answer changes on a case-by-case basis.

Having a slow Debian mirror can be frustrating and thus it is always best to choose closest mirror to your geographical location as possible. Even your best guess may not always bring good results. Fortunately netselect-apt command line tool is here to help you find the fastest mirror available.

This article describes an installation of the Valve Steam Linux client on Debian 8 Jessie 64bit. The article assumes that you have already installed your VGA drives required to run Steam client.

The easiest way to install NVIDIA GeForce Driver on Debian Linux 8 ( Jessie ) is to use official contrib and non-free debian repository. First add the following non-free and contrib repositories to your /etc/apt/sources.list.

This article contains a bunch of speed benchmark tests of Samsung SSD 850 PRO for those considering to buy a Samsung solid state drive with V-Nand Technology. All tests were performed on Ubuntu Linux with "Write Cache" disabled and in order shown below.

In this config we are going to compile and install the Wesnoth 1.12 on Ubuntu 14.04 Linux. Wesnoth is a free single-player or multiplayer turn-based strategy game.

In this config we will show you a number of examples how to use mcrypt tool to easily encrypt files whether the file is large or small in size. We will also use Mcrypt to encrypt and compress files and directories on the fly which can be usefully for a number of backup and scripting purposes.

Glacier is a low cost cloud storage provided by Amazon Web Services. There are certain time limitation when retrieving your data so be sure that this is a right service for you before you decide to use Amazon Glacier service. Generally Amazon Glacier service is great for all digital archiving and backup needs, where the archived files do not need to be retrieved instantly.

Did you ever wanted to write and publish book? With GitBook you can create ebook using markdown syntax and with few clicks publish it in multiple formats such as PDF, EPUB, HTML or MOBI. GitBook also allows to split the workload among multiple contributors by using git distributed revision control. In this article we show how to run GitBook on Fedora and Ubuntu Linux.

There is no need to install tons of software in order to create a nice and informative presentation. tpp is a simple to use command line presentation tool which allows you to create a fancy text based slide show presentation and share it with your colleges or students as an ordinary ASCII text file. tpp supports colors, slide-in, source code output, animated command line execution and a real time command executions all available from within your terminal.

If you run Debian Wheezy 7 Linux as your main operating system and you wish to try open source real-time strategy and real-time tactics hybrid computer game WarZone 2100 then here is a short guide on how to install this game on your debian system.

If you have a missing default gateway on your Redhat system you can add new route as per network interface or globally. Defining default gateway using ifcfg files, that is, defining it as per network interface basis takes a precedence over global system wide default gateway configuration defined by /etc/sysconfig/network configuration file.

Apart of the regular local Redhat's installation, the Redhat system allows admin to modify boot options to temporarily setup network interface and instruct the installation program Anaconda to initiate installation via VNC. In this article we will modify default Redhat's boot options to initiate remote installation using VNC.

Are you working on a project and need to submit your progress, statistics or perhaps you need to calculate a value of your code? cloc is a powerful tool that allows you to count all lines of your code, exclude comment lines and white space and even sort it by programming language.