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Posts Categorized: Technology

Continuous integration testing for WordPress plugins on Github using Travis CI

Intro We have open sourced and published some plugins on wordpress.org. We only publish them to wordpress.org and do the development in Github. Our goal is to keep them simple but effective. Quite a few people are using them actively and some of them have contributed back by creating additional features or fixing bugs/docs. It’s super nice to […]

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Ubuntu Phone review by a non-geek

  Few weeks ago I found a pretty black box waiting on my desk at the office. There it was, the BQ Aquaris E4.5, Ubuntu edition. Now available for sale all over Europe, the world’s first Ubuntu phone had arrived to the eager hands of Seravo. (Working in an open office with a bunch of […]

Why and how to publish a plugin at WordPress.org

The first ever WordCamp was held in Finland on May 8th and 9th in Tampere. Many from our staff participated in the event and Seravo was also one of the sponsors. On Friday Otto Kekäläinen had a talk with the title “Contributing to WordPress.org – Why you (and your company) should publish plugins at WordPress.org”. […]

OpenFOAM – Open Computational Fluid Dynamics

OpenFOAM (Open source Field Operation And Manipulation) is a numerical CFD (Computational Fluid Dynamics) solver and a pre/postprocessing software suite. Special care has been taken to enable automatic parallelization of applications written using OpenFOAM high-level syntax. Parallelization can be further extended by using a clustering software such as OpenMPI that distributes simulation workload to multiple […]

How to create good OpenPGP keys

The OpenPGP standard and the most popular open source program that implements it, GnuPG, have been well tested and widely deployed over the last decades. At least for the time being they are considered to be cryptographically unbroken tools for encrypting and verifying messages and other data. Due to the lack of easy-to-use tools and […]

A guide to modern WordPress deployment (part 2)

Recently we published part one in this series on our brand new WordPress deployment platform in which we covered some of the server side technologies that constitute our next-gen WordPress platform. In part 2 we’ll be briefly covering the toolkit we put together to easily manage the Linux containers that hold individual installations of WordPress. […]

A guide to modern WordPress deployment (part 1)

As a Linux and open source specialist company, Seravo provides services to many companies that run Linux in a web server. Not surprisingly, in many of these cases, the top-level software running on the server is of course, the world’s most popular CMS, WordPress. We love it!

Turn any computer into a wireless access point with Hostapd

Do you want to make a computer function as a WLAN base station, so that other computers can use as it as their wifi access point? This can easily be done using the open source software Hostapd and compatible wifi hardware. This is a useful thing to do if computer acting as a firewall or […]

Optimal Sailfish SDK workflow with QML auto-reloading

Sailfish is the Linux based operating system used in Jolla phones. Those who develop apps for Jolla use the Sailfish SDK (software development kit), which is basically a customized version of Qt Creator. Sailfish OS apps are written using the Qt libraries and typically in the C++ programming language. The user interfaces of Sailfish apps […]

Open source for office workers

Open source software is great and it’s not only great for developers who can code and use the source directly. Open source is a philosophy. Open source is for technology like what democracy is for society: it isn’t magically superior right away, but it enables a process which over time leads to best results – […]

How’s (battery) life with Jolla?

Some years ago Nokia conducted a large survey among its customers on what people most liked about Nokia phones. One of the top features turned out to be their unrivaled battery life. Despite the hype around screen resolutions, processor performance and software versions, one of the most important features for a mobile device is simply […]

Installing Node.js on SUSE Linux Enterprise

The officially supported collection of software in SUSE Linux Enterprise Linux 11 Service Pack 3 does not contain all conceivable Linux software, but in the Open Build System there are tons of software that is build for SLES 11SP3. Installing these software packages and repositories is of course on your own risk, as they are […]

The Jolla phone – first impressions

The first device running SailfishOS, the successor of Meego, has finally been released. It’s elegant and beautiful both on the outside and inside. It has multiple unique features that makes it unlike any mobile device we’ve seen so far. We have been waiting for Jolla to release their phone for more than a year and […]

Dual-booting Ubuntu 12.04 and Windows 8 with Restricted Boot

In parallel with the introduction of Windows 8, Microsoft also introduced new hardware requirements to all manufacturers who sell pre-installed Windows 8 computers. As Microsoft Windows still has a monopoly in the desktop and laptop computer market, lots of people who buy computers suffer from a new anti-feature Microsoft introduced: Secure Boot. All Windows 8 […]

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Tips to optimize images for faster loading websites

For a multitude of reasons ranging from user conversion rate to search engine ranking, it is important for web sites to load fast. The first rule of thumb to having fast loading pages is to keep the amount of data the users need to transfer small. The smaller the web page file and its dependencies […]

Dell XPS 13 Ubuntu Edition – first impressions

Update October 2013: We bought a new Dell XPS 13 in October with Ubuntu pre-installed but unfortunately it seems to have problems with the wireless: wifi connections seem to disconnect at random and thus wifi is useless. We found out that the in the new laptop shipped to us this fall the Intel wifi card […]

Improve MySQL performance to speed up websites

In every business the rule is that if your service is slow, you’ll loose customers, and it certainly applies online too. If your website takes two seconds to load instead of a half second, you’ll loose visitors and business. Even if it is just about improving by a few seconds, on the web it does […]

Optimizing web server performance with Nginx and PHP

Who would not want to have a fast service? No matter how good your web service is, if it takes 5 seconds to load a page, people will dislike using it. Even search engines dislike slow servers and decrease their ranking. Faster is always better. In our article a few months ago we asked what […]

Free Your Android phone (and upgrade to the latest Android version)!

Most Android phone manufacturers provide operating system upgrades, so you can run the latest version of Android even with an older smart phone. With closed software phones like iPhone this is not possible, since Apple wants to force its customers into always buying a new phone. However not all Android phone manufacturers provide upgrades, or […]

Installing Android-x86 4.0 on the ExoPC (WeTab)

The official Android project only releases versions for the ARM platform, but there is an unofficial porting project for the Intel x86 platform called Android-x86. Using this version you can in theory install Android on any home computer lying around. In practice however you need to consider what kind of components your device has and […]

Git training with Devaamo

On November 28th Otto Kekäläinen of Seravo ran a Git training session on request by the Tampere-based developer community Devaamo ry. Git is great revision management system authored by Linus Torvalds, and in last two years its popularity has exploded because it is so great, but certainly not because it would be easy to use, so there […]

The fastest web server in the world?

Speed matters. Over and over research shows that when the speed of a website increases, the activity of users increase. Even if the changes are small, like a half second, and users are perhaps not conscious about it, users will view the overall experience as better. Besides website popularity, high-speed websites are also capable of handling more […]

Virtualized bridged networking with MacVTap

Introduction A virtual machine typically needs to be connected to a network to be useful. Because a virtual machine runs as an application inside the host computer, connecting it to the outside world needs support from the host operating system. There are a number of options for networking a virtual machine, both on the Link […]

How to try out IPv6 on your home computer

IPv6 is slowly, but steadily making itself present on the Internet today. Major web sites like Google, Yahoo, YouTube and Facebook are now serving their content off IPv6-enabled servers. You can expect IPv6 adoptation to pick up speed as the IPv4 address shortage becomes increasingly acute in the years ahead. What is IPv6? Internet Protocol […]

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Trying out Meego offspring Mer and Nemo on ExoPC (WeTab)

Even though Steven Elop, Intel and the Linux Foundation killed the Meego project, the code base is not dead. In October 2011 the Mer Project was forked out of Meego and quickly attracted the development community that had grown distrust in the original Meego project, for very obivious and good reasons, of course. In the […]

Cross-distribution packaging with the Open Build Service

The Open Build Service is a great innovation that significantly lowers the barrier to package software for multiple Linux distributions. It enables building packages for many different Linux distributions at one go, both RPM and Deb based. For example the Seravo Remote support program is built via OBS for 15 different Linux distribution versions. Actually the […]

Make your Android phone last a week without recharging

Modern touch screen smart phones are great and enables you to do almost anything, but there is one feature that older mobile phones are still better at: battery life. I imagine most smart phone users recharge their devices every other day or so, which is fine as long you have easy access to electricity. However, […]

Google Navi for Android in Finland

For some reason, which we where unable to find information on, Google hasn’t published their navigation app for Android in Finland. However it does exist, and it works wonderfully. To install the Google Navi app, you must first uninstall your current Maps app, and then install the modified Maps app with Navi enabled, which can […]

Migrating from VirtualBox to Virt-Manager

The Linux virtualization module KVM is gaining a lot of popularity and system administrators everywhere are interested to learn about it. As many Linux users run VirtualBox to host other OS’s under their primary OS, the easiest way to get experience about KVM is to replace VirtualBox with it and thus getting used to KVM. […]