Showing headlines posted by linuxaria

In my desktop I use Xubuntu 12.04, and today i noticed that this distribution shippedd by default the Zeitgeist daemon, a thing that I’m not using at all and that is using resources of my system, so I’ve decided to remove this daemon totally from my system, please note that if you use Gnome 3 or Unity you could have some side effect, or perhaps the system will just become more faster, like the author of the article: Removing Zeitgeist Sped Up Unity .

Today I’ll present you 5 Linux distribution focused on computer security, in this list I’ve not put 2 distro I’ve already talked about: Backtrack and Damn Vulnerable Linux. The 5 Linux distribution are: DEFT (Digital Evidence & Forensic Toolkit), QubesOs, Pentoo, Lightweight Portable Security and CAINE.

There are many pdf reader available for Linux, and in a former article I’ve took a look at some of the traditional programs, such as Evince, Xpdf or Okular, but sometime you have to do a presentation with a file in PDF format and so you could use some more special effect to keep the attention of your public alive, so let’s take a look at PDFcube and Impressive.

The compgen builtin command expands a list of arguments to generate completion matches, so it allows us to display the commands, functions, directories and aliases available for the current user. In short compgen is a command that displays commands.

With the profound changes that mobile computing has brought to the table during the past few years, one fact has remained relatively constant for the better part of a decade. Linux based computers, and specifically the Linux desktop still comprise only 2% of all the computers out there in the world. If you're a die hard fan of Linux, then you have really have to accept that you're almost on an island when it comes to support for Metatrader 4

Sometimes you have some firewall that don’t allows you to accept connection other than some specific ports let’s say that you can connect on your VPS or remote server only on the ports 80 (http) and 443 (https), but you need a port also for ssh to manage your vps/server but the port 443 is used by your Web server with its https protocol, so what can you do? This is where sslh comes in. It’s a really simple tool that wraps incoming connections to a port and then depending on protocol redirects it onto sshd back on port 22, or to your web server on localhost:443.

When you look online for reviews of social media applications, Windows and Apple platform applications always dominate the list. Linux geeks, however, have a long history of using social media tools to discuss geeky and techie topics online. Until fairly recently, however, most large scale development around social media tools on Linux was virtually non-existent. Linux users were expected to follow their usual fare of bare bones interfaces and text based controls. With the growing interest of Linux on the desktop for the more general audience, however, many developers have started putting effort toward creating more user friendly applications for social media. While this of course is beneficial for newer users of Linux who came from the Microsoft and Apple platforms, using and contributing to these social media apps is also in the best interest of anyone who wants to further the Linux cause and gain more market acceptance for our favorite open source operating system.

Today I’ll talk about a very important type of monitoring that is rarely discussed (perhaps because not so many people are privileged to work with hardware that supports this technology: IPMI). The Intelligent Platform Management Interface (IPMI) is a standard used to manage a computer system and monitor its operation. Its development was led by Intel and is today supported by more than 200 hardware manufacturers. Its operation is independent of an operating system, which allows administrators to remotely manage the hardware resources even before any OS starts. For example, we can monitor through IPMI system temperatures, voltages, fans (FAN), power supplies, chassis intrusion, etc.. For the ones that wants to go deeper in IPMI specifics, I suggest reading the website of Intel

Linux Tycoon is a management game set in the world of the Linux distributions. We will have to create our distribution with the goal of making it the most used and famous in the world. An interesting thing of this game is the economical plan that its author Bryan Lunduke is “testing”, getting paid by the community for working on open source projects, the goal is to get 4.000 $ in donations every month. In the first month (June 2012) he reached the goal in just 1 week, and so he released this game and other projects he’s working on as GPL software, but sadly just the following month he made a sad post on his blog “Open Source Funded By Donations? Not So Much” where in short he wrote ;

Unfortunately things didn’t quite work out.

If you are a system administrator and you want to push the performance of your PHP website such as Drupal, WordPress or wrote by you or other programmers, there are good chances that you’ve heard about the Alternate PHP Cache or simply APC.

The Alternative PHP Cache (APC) is a free and open opcode cache for PHP. Its goal is to provide a free, open, and robust framework for caching and optimizing PHP intermediate code.

That everything you’ll read about APC on the php.net site, and i think is not enough in comparison to the huge boost of performance that this small component can give you

I just realized that I’ve never wrote anything about one of my favorite commands on the Linux shell: locate. This command take as input the name (or part of it) and instantly it gives you all the locations where that file is located, an alternative to this could be to use the command find, but there is an huge difference in the time that takes find to search large file systems in comparison to a locate, this difference is given from the fact that locate uses his own database where it stores all the file names, while find scan the directory and looks for the file name you have given as input.

OpenDNS is a popular DNS provider used widely both in the server as in home desktop, one of the feature they provide to their customer is DNSCrypt, a security enhancement that should add protection against all DNS based attacks, such as cache poisoning.

In the same way the SSL turns HTTP web traffic into HTTPS encrypted Web traffic, DNSCrypt turns regular DNS traffic into encrypted DNS traffic that is secure from eavesdropping and man-in-the-middle attacks. It doesn’t require any changes to domain names or how they work, it simply provides a method for securely encrypting communication between OpenDNS customers and their DNS servers. The software is released as open source on GitHub.

With the recent development of cloud computing, many big companies have already launched their cloud sync services. The most conspicuous examples are Dropbox, Sugarsync and Google Drive. And Ubuntu, the most popular Linux distribution currently, also offers its own cloud sync tool. this is Ubuntu One. With 5GB of free storage, Ubuntu is better than Dropbox and equal to Sugarsync and Google Drive. If you want more storage, then you will have to pay for the additional storage space. The good thing about Ubuntu is that their paid storage is split into small 20GB pieces and the cost is more affordable than other service. Also the storage space of Ubuntu One is unlimited so you can just keep adding more and more 20GB bundles to your account in order to have as much storage as you need.

Sometimes is useful to sync automatically files over the net between 2 or more computers, maybe you want to keep some configuration files aligned on different servers or maybe you have a cluster of web servers and you want to keep their document root aligned so your customer will always see the same result.

You could do this with a network filesystem like NFS, GlusterFS or Coda File system. But why do complicated things when you could easily do this just keeping in sync the local filesystem ?

In a former article I’ve talked about Unison to do a work like that, and it works, the limit of Unison is that you can have just 2 nodes, but if you have more nodes you have to use a different solution like the one i present you today: csync2

Sometime is useful to have information on a system when you login into it via ssh or via a local terminal, or perhaps just to have a warmer welcome with some ASCII art and information on your system, on Linux there are many software that do this work, we can call them Shell information tools.

These tools are designed to run in a terminal to show information on your distribution/system.

With the latest version of WordPress just arriving, version 3.4, I’m sure people who are using the self-hosted version of WordPress are interested to know what is included with this update. Along with the usual bug fixes, included are many improvements and additions that will benefit both designers, developers and end users. Let’s take a look and see why.

Minecraft is one of the most funny and popular games of the moment. It is available for Microsoft platforms and for GNU/Linux. Made in Java relies entirely on its gameplay and not on graphics. The game offers the opportunity to gather resources from any “cube” around you and use it to build everything you can imagine in your mind. In this guide we will see two possible ways to install it on ArchLinux, how to get an account and what are the requirements.

This time we are going to have a look at Linux permissions. Every current operating system deals with permissions, whether it is ownership of a file or just gaining read access to a folder. As with everything else in Linux there are command line tools and the graphical user interface so we shall discuss both.

Secure Boot is a type of mechanism that verifies that the code executed is digitally signed. Thus the computer can only boot an operating system that has a bootloader properly signed. This is a requirement that Microsoft asked to put on computers the badge “Windows 8 Certified”. This request by Microsoft has split the waters among the major Linux distributions , find out why.

As the open source community continues to grow and thrive through the popularity of such enterprise ready platforms as Red Hat, the number of open source medical applications also grows with it. The truth is, medical software is expensive. Most health care providers – doctors, hospitals, dentists, independent clinics – have been under a lot of pressure to maintain or reduce run costs while at the same time continuing to provide the quality patient care and customer service expected of the medical care industry. In an effort to control these costs, many health care organizations are looking toward open source software to help them manage their complex billing and electronic medical records.