Showing headlines posted by linuxaria

I think that is a common question for every Linux user soon or later in their career of desktop or server administrator “Why Linux uses all my Ram while not doing much ?”. To this one today I’ve add another question that I’m sure is common for many Linux system administrator “Why the command free show swap used and I’ve so much free Ram ?”, so from my study of today on SwapCached i present to you some useful, or at least i hope so, information on the management of memory in a Linux system.

I think that every user that has some skill know that a simple rm of a file or deleting it via any file manager is not enough to really remove it from your hard disk.

In Linux there are some tools that can offer you way more secure to really delete your files: DBAN if you need to erase completely a hard disk o partition or if you just have to delete some files you can use Shred or Wipe

If you are a computer user and have been around for a while on the internet, you must have heard about Linux already. Contrary to what many people believe, you do not have to go through the labyrinth of complicated command-lines in order to get an experience with Linux. In fact, you do not even have to install any fancy thing on your computer to try Linux. In this article, I will show you two easy ways to try Linux without the fear of crashing your computer.

A lot of people use cloud storage systems like Dropbox, Spideroak or Ubuntu One, these software allow you to store your files on a remote server (on the clouds) and be able to access them on all your devices: computers with Linux,mac or Windows and also from tablets and smarthphones. But it wouldn’t better to manage yourself your own storage system ?

This could be really useful for small and large company to setup their own storage with their security policy and permission systems, or also for people that want to have the full control on their files.

We all know the incredible versatility of our beloved Linux. To our great pleasure we can find it in the PC of the school of our son, or on the netbook of our secretary, in the terminals of the Internet Café of Madrid but also, for the amazement of many, in the most common security devices or in the more sophisticated satellite receivers. But I am quiet sure that you have never heard of Linux distributions for the space. That’s right! What reaction would you have in discovering that many of the satellites scattered in outer space have entrusted our beloved Linux? Shocked? Then, you have not heard anything! The future of Linux and its philosophy is finally conquering the space my dears.

I’ve discovered this Indie game thanks to Humble Indie Bundle Number 5, buying it I’ve got this one as Bonus game, and I must say that it’s been a great, and positive surprise. Lone Survivor is a psychological survival adventure, with art, design, and music by the one-man studio, Superflat Games. The surgical-mask wearing protagonist has survived a disaster and must now face the world’s twisted creatures, as well as the potential unraveling of his own mind.

Designed by the Apache Software Foundation, Hadoop is a Java-based open-source platform designed to process massive amounts of data in a distributed computing environment. Hadoop’s key innovations lay in its ability to store and access massive amounts of data over thousands of computers and to coherently present that data. Though data warehouses can store data on a similar scale, they are costly and do not allow for effective exploration of huge amounts of discordant data. Hadoop addresses this limitation by taking a data query and distributing it over multiple computer clusters. By distributing the workload over thousands of loosely networked computers (nodes), Hadoop can potentially examine and present petabytes of heterogeneous data in a meaningful format. Even so, the software is fully scalable and can operate on a single server or small network.

This is the winning Article chosen by me in the ZorinOs Contest, wrote by Ken Cominsky. Once upon a time there lived a young squire (engineer) who learned to ride a seasoned horse (computer) with a trusted saddle (UNIX OS) for it was his job. While learning to ride, the squire learned to tweak the saddle (write scripts) to make the horse uniquely his. One day a saddle salesman named William came to the squire’s village (company) and told the village elders (IT department) that, for much gold ($$), he could sell them a new kind of saddle. One that could make the village’s horses do wonderful things. Never mind that the saddle was full of holes and had bugs for if they did not buy his new saddle, the village across the river would best them in tournament for they had already purchased his new saddle. All the saddles of the village elders were sold and soon all the old saddles, along with the squire’s saddle, were retired. Unfortunately the horses, with William’s new saddle, didn’t do all that William had promised. When asked about this, William replied “to make the new saddles work best you must spend more gold and buy new, more powerful horses.” The village elders were sold and soon the trusted horses were retired for new, more powerful ones.

The mythology and history tell us of great struggles between sworn enemies. David and Goliath, Caesar and Brutus, Robespierre and Louis XVI are only a few. But for some years now in addition to this huge list we have two big names in the information technology! The multinational Microsoft and the GNU/Linux open source operating system. The struggles between the two never ends!

While Microsoft is trying by all means to keep under its control the market of the desktop, Linux itself in recent years is reaching incredibly important goals, mostly on the servers and embedded systems (Android ?). Despite the low blows of Microsoft, we can just take a look at the mythological UEFI chips, Linux does not give up though. Indeed, it always win a larger slice of users thanks to its distributions. Each of which, of course, choose a different path.

I’m a Xubuntu user, and so i was a bit disappointed that for some days my Xubuntu 12.04 missed the 4.10 release of XFCE.

Luckily there is an easy way to install this version of XFCE on Ubuntu, there is an PPA that can bring the new feature of XFCE in your Ubuntu in few minutes.

With the rapid change of technology nowadays, computers become obsolete very fast. The latest versions of Windows and Mac are now incompatible with outdated computers. But with Linux, which is well known for running very well on old hardware, you still can utilize your outdated computer for many things. In this article, I will show you some tips to keep your old computers useful with the help of Linux.

An useful tool for the management of a shared server is etckeeper. This software is a collection of bash scripts that allow you to control through a distributed revision system our directory /etc/ where there are the configuration files of most of our Linux daemons. You could do the same thing without etckeeper leaning on a revision system such as darcs or git, but you must remember that for this directory is essential to maintain, for each file, its permissions and also its owner and group as well as the entire structure including empty directory.

Etckeeper helps us in the management, automating many of these tasks.

Attractive though this board is in price at least, it measures about the size of a credit card, it is quite hard to get one I know I have been waiting 4 or 5 months since I knew I could place an order and still don’t have one. I don’t know how true this figure is but am lead to believe some 350,000 people have ordered and waiting delivery for their Raspberry PI Board. If you cant wait to try Raspberry PI you can at least emulate the operating system and it’s processor using a method described below.

Below is a procedure for Raspberry PI Debian and to get working there are other distro which you could use instead and should be able to run using a slight variation on the command line executed in fact all you need do is change the image filename

Software packaging systems are a strange phenomenon. They all seem to aim at solving the general problem of shipping some named, versioned collection of files to the world. Yet, this common ground seems insufficient given the overwhelming number of incompatible packaging systems in the wild. The “overwhelming” part of above is what we need to talk about. Specifically, despite having similar goals, one package system is rather unlikely to have anything in common with another. Different terminologies, different tools, different technologies, different distribution mechanisms, different policies. The side effect with this phenomenon of “similar goal, nothing meaningful in common” is that you get punished.

This is a terrible news for my spare time, a new, and IMO really good, Humble Indie Bundle (HIB) is out and there are some really good games in this offer.

Your beloved son, while heading back from a wonderful holiday, has magically overcome all the intricate steps of the camera and was able to remove hundreds of photos of the entire trip? Have you carelessly formatted an hard disk? Have you corrupted the file system of a SD card or USB stick? Wow! They are all very unpleasant situations … Situations that have made ??put you in trouble ! Today, thanks to two simple tools, we will see how to retrieve all the lost data, or at least those recoverable …

Milton Friedman the American Economist said “There’s no such thing as a free lunch” and even though Open Source is free to use, alter, and pass on, there’s still a price to pay. To date, I have used two Open Source Content Management Systems (CMSs) to run five on-line communities and paid the price.

Do you write HTML, PHP, Java or some other code ? You probably don’t want to spend hundreds of dollars for software that you would use maybe only as a hobby? Today, I present an amazing solution, a multi-platform software that can wins ten to zero with the most popular programming editor on the market! Today I talk about Bluefish!

Back in December 2011, data-intensive Linux users rejoiced as Apache Hadoop reached its 1.0.0 milestone. Setting a benchmark for distributed computing software, this wonderful little program is now into release 1.0.3 but what is Hadoop and how can you benefit from using it? Designed with ‘web-scale’ operations in mind, Hadoop can handle massive amounts of information, allowing you to quickly and efficiently process volumes of data that other systems simply cannot handle. But that’s just the beginning. Hadoop also allows you to network this process – it can distribute large amounts of work across a cluster of machines, allowing you to handle workloads that a single processor simply cannot manage.

OpenVAS is a framework that includes services and tools for scanning and the complete managment of vulnerability. A vulnerability scanner is a tool that allows you to scan a target system (IP/HOSTNAME) based on a range of ports and a set of policies. The tool is supported by a database that is used from the vulnerability scanner to analyze possible problems whenever you find a listening service. The tool that scans receives daily updates from the database Network Vulnerability Tests “NVTs”.