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Updated: 6 weeks 3 days ago

Rollback an update on RHEL/CentOS - A simple guide

Friday 16th of March 2018 02:00:00 AM

We can install, remove or update packages using the yum command. But...

How to Play Rubik's Cube in Linux Terminal with nrubik

Thursday 15th of March 2018 10:00:00 PM

MakeTechEasier: There are many Inventive games that pushed the boundaries of what's possible for puzzle games

GNOME 3.28 Released, This is What's New

Thursday 15th of March 2018 09:00:00 PM

OMGubuntu: The new GNOME 3.28 release is here

GNOME 3.28 "Chongqing" Desktop Environment Officially Released, Here's What's New

Thursday 15th of March 2018 09:00:00 PM

This release contains dozens of new features for users, developers, and administrators

Raspbian Remix Lets You Create Your Own Spin That You Can Install on PC or Mac

Thursday 15th of March 2018 08:20:14 PM

Raspbian PIXEL for PC and Mac is a Debian-based operating system created by the Raspberry Pi Foundation for those who want to run the de facto standard Raspberry Pi OS on their personal computers too.

How to measure particulate matter with a Raspberry Pi

Thursday 15th of March 2018 08:00:00 PM

Build an air quality sensor with these two simple, hardware devices and a few lines of code.

How to use Ansible to set up system monitoring with Prometheus

Thursday 15th of March 2018 07:00:00 PM

opensource.com: learn how to automate system monitoring with ansible and prometheus

How to manage your passwords with Bitwarden, a LastPass alternative

Thursday 15th of March 2018 06:00:00 PM

Learn how to set up and use open source password manager Bitwarden.

10 Hello World programs for your Raspberry Pi

Thursday 15th of March 2018 04:00:00 PM

How many ways can your Pi say "hello world"?

Linux Mint Devs to Enable Faster Launching of Apps on Cinnamon for Linux Mint 19

Thursday 15th of March 2018 03:00:00 PM

The Linux Mint development team spent some time earlier this year to investigate and debug any performance hogs in Cinnamon

Install GoAccess Apache Log Analyzer Tool on Ubuntu 16.04

Thursday 15th of March 2018 02:00:00 PM

GoAccess is a free, open source and real-time web server log analyzer tool that can be used to analyze and view web server logs

Linux nm Command Tutorial for Beginners (10 Examples)

Thursday 15th of March 2018 01:00:00 PM

HowToForge: If you are a Linux user who is also into system level software development, you may find yourself in situations where-in you need information related to symbols in an object file.

Let's Encrypt Starts Offering Free Wildcard SSL Certificates that Work with Multiple Sub-domains

Thursday 15th of March 2018 12:00:00 PM

Let's Encrypt started issuing free Wildcard SSL certificate

Firefox Quantum for Enterprise Brings Control to Browser Deployments

Thursday 15th of March 2018 02:00:00 AM

eWEEK: The upcoming Firefox Quantum 60 web browser release will benefit from new administrative controls that can aid with enterprise deployments.

Pi Day: 12 fun facts and ways to celebrate

Wednesday 14th of March 2018 10:00:00 PM

A dozen fun facts and interesting pi-related projects to celebrate Pi Day

PyCharm - Python IDE Full Review

Wednesday 14th of March 2018 09:00:00 PM

Pycharm is a Python Integrated Development Environment for Professional Developers and also anyone who can code in python or even learning how to code in python.

Terminus - A Web Technology Based Modern Terminal

Wednesday 14th of March 2018 07:00:00 PM

ostechnix: Terminus - A cross-platform, open source, web technology based Terminal for modern age, inspired from Hyper.

Meet the Raspberry Pi 3 Model B+

Wednesday 14th of March 2018 06:00:00 PM

Brand-new Raspberry Pi adds speed, dual-band wireless, better thermal control, and more to the popular mini PC.

How to Clear Package Cache in Arch Linux

Wednesday 14th of March 2018 05:00:00 PM

MakeTechEasier: The package cache in Arch Linux can easily fill up your hard disk if you are not careful.

6 ways Apache Cassandra prepares you for a multi-cloud future

Wednesday 14th of March 2018 04:00:00 PM

Cassandra's flexible feature set offers a powerful open source foundation for your organization's multiple-cloud strategy.

More in Tux Machines

15 books for kids who (you want to) love Linux and open source

In my job I've heard professionals in tech, from C-level executives to everyone in between, say they want their own kids to learn more about Linux and open source. Some of them seem to have an easy time with their kids following closely in their footsteps. And some have a tough time getting their kids to see what makes Linux and open source so cool. Maybe their time will come, maybe it won't. There's a lot of interesting, valuable stuff out there in this big world. Read more

Security: VPNFilter, Encryption in GNU/Linux, Intel CPU Bug Affecting rr Watchpoints

  • [Crackers] infect 500,000 consumer routers all over the world with malware

    VPNFilter—as the modular, multi-stage malware has been dubbed—works on consumer-grade routers made by Linksys, MikroTik, Netgear, TP-Link, and on network-attached storage devices from QNAP, Cisco researchers said in an advisory. It’s one of the few pieces of Internet-of-things malware that can survive a reboot. Infections in at least 54 countries have been slowly building since at least 2016, and Cisco researchers have been monitoring them for several months. The attacks drastically ramped up during the past three weeks, including two major assaults on devices located in Ukraine. The spike, combined with the advanced capabilities of the malware, prompted Cisco to release Wednesday’s report before the research is completed.

  • Do Not Use sha256crypt / sha512crypt - They're Dangerous

    I'd like to demonstrate why I think using sha256crypt or sha512crypt on current GNU/Linux operating systems is dangerous, and why I think the developers of GLIBC should move to scrypt or Argon2, or at least bcrypt or PBKDF2.

  • Intel CPU Bug Affecting rr Watchpoints
    I investigated an rr bug report and discovered an annoying Intel CPU bug that affects rr replay using data watchpoints. It doesn't seem to be hit very often in practice, which is good because I don't know any way to work around it. It turns out that the bug is probably covered by an existing Intel erratum for Skylake and Kaby Lake (and probably later generations, but I'm not sure), which I even blogged about previously! However, the erratum does not mention watchpoints and the bug I've found definitely depends on data watchpoints being set. I was able to write a stand-alone testcase to characterize the bug. The issue seems to be that if a rep stos (and probably rep movs) instruction writes between 1 and 64 bytes (inclusive), and you have a read or write watchpoint in the range [64, 128) bytes from the start of the writes (i.e., not triggered by the instruction), then one spurious retired conditional branch is (usually) counted. The alignment of the writes does not matter, and it's not related to speculative execution.

In Memoriam: Robin "Roblimo" Miller, a Videographer and Free Software Champion

Videographer Robin Roblimo Miller

Robin "Roblimo" Miller was a clever, friendly, and very amicable individual who everyone I know has plenty of positive things to say about. I had the pleasure of speaking to him for several hours about anything from personal life and professional views. Miller was a very knowledgeable person whose trade as a journalist and video producer I often envied. I have seen him facing his critics in his capacity as a journalist over a decade ago when he arranged a debate about OOXML (on live radio). Miller, to me, will always be remembered as a strong-minded and investigative journalist who "did the right thing" as the cliché goes, irrespective of financial gain -- something which can sometimes be detrimental to one's longterm health. Miller sacrificed many of his later years to a cause worth fighting for. This is what we ought to remember him for. Miller was - and always will be - a FOSS hero.

May everything you fought for be fulfilled, Mr. Miller. I already miss you.

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