Brian Behlendorf
Brian Behlendorf, Executive Director of the Hyperledger Project, explains everything you need to know about blockchain, Hyperledger, and other amazing new technologies in his LinuxCon North America keynote.

Hyperledger -- The Source of Truth

Well, here we go again with yet another new technology with a name that doesn't tell us much about what it is: Hyperledger. Hyperledger is related to Bitcoin, Ethereum, and blockchains... but, what are these things? They sound like science fiction: I have plenty of Bitcoins, so let's go splurge on...
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Debunking Unikernel Criticisms

The security and tooling worries around unikernels are vastly exaggerated, asserted Idit Levine, creator of the Unik, a unikernel compilation tool, as well as a cloud chief technology officer at Dell EMC. A relatively new concept, Unikernels could be thought of as stripped-down containers with only...
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4 Useful Cinnamon Desktop Applets

The Cinnamon desktop environment is incredibly popular, and for good reason. Out of the box it offers a clean, fast and well configured desktop experience. But that doesn’t mean that you can’t make it a little better with a few nifty extras. And that’s where Cinnamon Applets come in. Like Unity’s...
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Mitigating dirtyc0w with systemd

Basic mitigation Known exploits for the CVE-2016–5195 vulnerability involve the madvise syscall, so it’s possible to mitigate by excluding the necessary call via a systemd service or container configuration. This is easy with for a systemd unit: [Service] SystemCallFilter=~madviseThe tilde after...
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OpenTracing: Microservices in Plain View

By Ben Sigelman (@el_bhs), OpenTracing co-author Those building microservices at scale understand the role and importance of distributed tracing: after all, it’s the most direct way to understand how and why complex systems misbehave. When we deployed Dapper at Google in 2005, it was like someone...
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What We Know About Friday’s Massive East Coast Internet Outage

This morning’s attack started around 7am and was aimed at Dyn, an Internet infrastructure company headquartered in New Hampshire. That first bout was resolved after about two hours; a second attack began just before noon. In both cases, traffic to Dyn’s Internet directory servers on the East Coast...
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“Most Serious” Linux Privilege-Escalation Bug Ever Is Under Active Exploit (updated)

A serious vulnerability that has been present for nine years in virtually all versions of the Linux operating system is under active exploit, according to researchers who are advising users to install a patch as soon as possible. While CVE-2016-5195, as the bug is cataloged, amounts to a mere...
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Video: HPC Opportunities in Deep Learning

"This talk will provide empirical evidence from our Deep Speech work that application level performance (e.g. recognition accuracy) scales with data and compute, transforming some hard AI problems into problems of computational scale. It will describe the performance characteristics of Baidu's deep...
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Docker Networking Fundamentals

Each Docker container has its own network stack. This is due to the Linux kernel NET namespace, where a new NET namespace for each container is instantiated and cannot be seen from outside the container or from other containers. Docker networking is powered by the following network components and...
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Download This Cheat Sheet To Learn Basic Linux Commands

New to Linux? Learn the basic Linux commands with this cheat sheet Linux is the flavor for programmers and wannabe hackers today as it is slowly and steadily being adopted for standalone PCs in addition to networked PCs. One of the basic reasons it is so popular among coders and hackers is its...
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