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This tutorial describes the installation and configuration of ProFTPD on a CentOS 7.2 Server. ProFTPD is an FTP daemon for Unix and Linux operating systems and distributed under the GNU Public License (GPL).
Taming the Chaos of Modern Caches
“If you’re a bit tired, this is a presentation on cache maintenance, so there will be plenty of opportunity to sleep.” Despite this warning from ARM Ltd. kernel developer Mark Rutland at his recent Embedded Linux Conference presentation, Stale Data, or How We (Mis-)manage Modern Caches, it was actually kind of an eye opener -- at least as far as cache management presentations go.
What is Git?
Welcome to my series on learning how to use the Git version control system! In this introduction to the series, you will learn what Git is for and who should use it.
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Managing networks in a software-defined future
Most in our industry have heard dramatic descriptions of the ways that software-defined networking (SDN) is set to change IP networks. Monitoring and managing those networks is an essential function, but not a glamorous one. If it's part of your responsibilities, you may have given little thought to the impact SDN will have on your work.
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Huge double boxset of Android patches lands after Qualcomm disk encryption blown open
What a coincidence. Google has released two bundles of Android security patches this month: a smaller one to handle bugs in the operating system, and a larger package that tackles a raft of driver-level issues, particularly with Qualcomm's hardware.
When Linux is the face of kindness
My late father, Lou Shapiro, was an early leader of UNICEF, so relief work was baked into the genetics of my family. His work was centered on emergency relief for the survivors of earthquakes and other natural disasters. Whenever there was an earthquake in the world, I knew dad would be coming home late from work—and I was so proud that some family experiencing trauma would be sleeping in a dry tent, with warm blankets and clean water, because of my dad's work.
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Geek Guide: Machine Learning with Python
I first heard the term “machine learning” a few years ago, and to be honest, I basically ignored it that time.
RPi-based music player has touchscreen and high-end DACs
Audiophonics has won KS funding for a “RaspTouch” audio player based on the Raspberry Pi 3, with ES9023 or ES9018K2M DACs and a touchscreen. There are plenty of audio devices based on the Raspberry Pi, including wireless speakers such as Tubecore’s Duo and Axiom’s AxiomAir, as well as Pi 2 Design’s 503HTA Hybrid Tube Amp […]
How to configure PureFTPd and FileZilla to use TLS sessions on CentOS 7.2
This article explains how to configure PureFTPd to use TLS sessions on a CentOS 7.2 server. Plain FTP is an insecure protocol because all passwords and all data are transferred in clear text. By using TLS, the whole communication can be encrypted, thus making FTP much more secure.
Support Public Education and Web Literacy in California
Web literacy — the ability to read, write, and participate online — is one of the most important skills of the 21st century. We believe it should be enshrined as the fourth “R,” alongside Reading, Writing and Arithmetic. From our … Continue reading
Why object storage is eating the world
The traditional file system-and-database web backend is no longer adequate, and must make way for storage systems that manage unstructured data. In this article we will learn about the differences between structured and unstructured data, and why web storage backends must evolve to manage unstructured data.
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Doing for User Space What We Did for Kernel Space
I believe the best and worst thing about Linux is its hard distinction
between kernel space and user
space.
4 open source tools I used to write a Linux book
I spent the past year or so writing Learn Linux in a Month of Lunches, which is designed to introduce desktop Linux to non-technical users. This is a rundown of the tools I used to create the book, with the HUGE caveat that tools are just that—tools. They don't actually do any work or planning for you. However, the right tools make the work much easier. These are the tools that were right for me.
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Learn about process management on Linux: how to shuffle processes between
foreground and background, find out what's running, kill processes, keep processes
running after you've left for the day, and multitask in a terminal window. You can use
the material in this tutorial to study for the Linux Professional Institute LPIC-1: Linux
Server Professional Certification exam 101, or just to learn for fun.
Open source SSH clients
The Secure Shell (SSH) protocol allows users to connect remotely to a machine using encrypted communications. It’s normal to use this protocol to work in a network environment. In Fedora, you can use the default client for SSH connections, OpenSSH.... Continue Reading →
ViewSonic taps Raspberry Pi 3 for $89 thin client system
ViewSonic’s $89, VESA-mountable “SC-T25” thin client runs the Linux-based VTOS distro on a Raspberry Pi 3, and is optimized for Citrix HDX. ViewSonic has offered several low-cost thin clients in recent years, such as the $199 SC-U25, a collaboration with Userful.
Arduino 101 gains faster compiler, better Curie support
Intel and Arduino LLC have updated the Zephyr RTOS core of its Curie/Quark driven, BLE-ready Arduino 101 board, featuring a faster compiler. Last October, Intel and Arduino LLC announced their jointly developed Arduino 101, an Arduino Uno compatible board known as the Genuino 101 outside the U.S. Intel shipped it in January, and on April […]
SourceClear Open
Open source and DevOps have been a boon to software development.
Building a water collection vessel from scratch
My team from Singapore Polytechnic made a water collection vessel for the module Engineering & Design, as part of the Engineering Academy program. The team consisted of four members from different disciplines: Thomas and Ryan from the Diploma in Mechanical Engineering, and Hwee Peng and myself, Ajay, from the Diploma in Electrical and Electronic Engineering. The project took several months to complete, from December 2015 to February 2016.
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Celebrated eye hospital Moorfields lets Google eyeball 1 million scans
Access granted to DeepMind for historic data. What consent?
Famous eye hospital Moorfields has agreed to give Google’s DeepMind access to one million anonymous eye scans as a part of a machine learning study intended to spot early signs of sight loss.…
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