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In my last article, I looked at NumPY and some of its uses in numerical simulations. Although NumPY does provide some really robust building blocks, it is a bit lacking in more sophisticated tools. SciPY is one of the many Python modules that build on NumPY's.

Death from above brought to you by the happy, peaceful world of open source Hey, Linux fans: a high-profile, colossal, global outfit is about to dump a proprietary operating system and replace it with Linux in a very, very, demanding application that literally involves life and death situations.…

When I walked into Carroll Hall, for a moment I felt like I was back in college... and at the World’s Best Slumber Party. There were tables full of salty snacks, stacks of sleeping bags, and the chatter of excited young women. But, unlike the sleepovers of my youth, talk was about Python, HTML, and Ruby. These were young women interested in learning to code.

Logical Volume Manager (LVM) is a versatile disk management system that can easily be used in Linux or similar operating systems. traditional partitions are created in fixed sizes, and resizing them is a tedious process. On the other hand, LVM creates and manages "logical" volumes off of physical hard disks, and provides administrators the flexibility […]Continue reading... The post How to use LVM in Linux appeared first on Xmodulo. Related FAQs: How to create a Linux LVM partition How to build a network attached storage (NAS) server with Openfiler How to run fdisk in non-interactive batch mode How to create an encrypted disk partition on Linux How to change a XenServer’s local storage repository from LVM to EXT

I do a lot of work on open source, but my most valuable contributions haven't been code. Writing a patch is the easiest part of open source. The truly hard stuff is all of the rest: bug trackers, mailing lists, documentation, and other management tasks. Here's some things I've learned along the way.

The Perfect Server - Ubuntu 14.04 (nginx, BIND, MySQL, PHP, Postfix, Dovecot and ISPConfig 3) This tutorial shows how to prepare an Ubuntu 14.04 (Trusty Tahr) server (with nginx, BIND, Dovecot) for the installation of ISPConfig 3, and how to install ISPConfig 3. ISPConfig 3 is a webhosting control panel that allows you to configure the following services through a web browser: Apache or nginx web server, Postfix mail server, Courier or Dovecot IMAP/POP3 server, MySQL, BIND or MyDNS nameserver, PureFTPd, SpamAssassin, ClamAV, and many more. This setup covers nginx (instead of Apache), BIND (instead of MyDNS), and Dovecot (instead of Courier).

A roundup of events in Fedora.

A project's choice of a license will have significant effects on its ability to sustain itself. Despite the rivers of ink that have flowed regarding the recent Heartbleed vulnerability, I believe the developer community has not addressed the right problem. Developers have fixated on a debate about one of open-source's most touted advantages: With many eyes looking at the code, is open source able to correct bugs faster than closed-source projects?

When AMD revealed an “ambidextrous” processor roadmap based on both x86 and ARM cores last Fall, it saved one surprise for today: they’ll be pin compatible!

You might be wondering why you might want to attach an Arduino to your Raspberry Pi. While there are lots of reasons, probably the most poignant is the extra six PWM-capable pins and another six analogue pins that a standard Arduino Uno offers.

When it comes to managing infrastructure deployments of a certain size, even a ninja sysadmin can't do it all without some help. In fact, one might argue that knowing when and how to use IT automation tools for managing infrastructure is a prerequisite to getting your admin blackbelt. Enter Puppet. 

When it was released in 2011, Drupal 7 was the most accessible open source content management system (CMS) available. I expect that this will be true until the release of Drupal 8. Web accessibility requires constant vigilance and will be something that will always need attention in any piece of software striving to meet the Web Content Accessibility Guidelines (WCAG) 2.0 guidelines.

Can a compact and low-cost circuit board piggybacked onto the Raspberry Pi microcomputer’s GPIO header turn it into a high-quality audio powerhouse?

Difio is a Django based application that keeps track of packages and tells you when they change. It provides multiple change analytics so you can make an informed decision on when or what to upgrade. Difio was created as closed software, then I decided to migrate it to open source to allow for in-house deployments and attract a larger community around the project. 10 steps to migrate your closed software to open source

If you are on a quest to get rid of your desktop environment and do everything from the console, well good luck with that. However, if you are a bit more serious, and would like to learn to do a new thing from the terminal, what about mastering spreadsheets? Sure, LibreOffice or any office suite […]Continue reading... The post How to make spreadsheets in a Linux terminal appeared first on Xmodulo. Related FAQs: What are games to play from a Linux terminal? How to manage multiple terminal windows on Linux Desktop How to record and replay a terminal session on Linux How to convert xlsx files to xls or csv format on Linux How to remove overlay scrollbars in Ubuntu

Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (Ubuntu 14.04LTS) This document describes how to install a Postfix mail server that is based on virtual users and domains, i.e. users and domains that are in a MySQL database. I'll also demonstrate the installation and configuration of Courier (Courier-POP3, Courier-IMAP), so that Courier can authenticate against the same MySQL database Postfix uses.

UltraDNS said it has mitigated a distributed denial of service (DDoS) attack for most of its customers after the service was held down for most of the day. "Currently, only customers utilizing a segment of UltraDNS Name Server addresses are experiencing resolution latency due to intermittent network saturation in the Western US," said Neustar director of product management, security solutions, Jim Fink in an email to Threatpost.

Avalue announced a 3.5-inch SBC and a Qseven format COM supporting the full range of Intel Atom E3800 SoCs and equipped with a wide range of PC-style I/O. Avalue is a bit late in announcing these new embedded boards based on Intel’s 22nm Atom E3800 system-on-chip, although being on Intel’s embedded roadmap, the SoCs will […]

I love SSH. I mean, I really, really love SSH. It's by far the most versatile, useful, amazingly powerful tool in my system administration quiver. One of the problems with SSH, however, is that when it dies, it doesn't automatically recover. Don't get me wrong.

Who doesn't know the challenges in complex project teams and organizations? Multiple projects need to be managed, often with various dependencies to other teams, partners, external suppliers or other parties. Different stakeholders require a different level of information. Questions arise and often cannot be answered satisfactory in many project teams: What is the timeline of our project? What needs to be done to reach the next milestone? How can we track dependencies to other parties in the project plan? Surprisingly, even with the existing OSS tool environment for project management, teams are often still not able to manage complexity.