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The X First Aid Kit For Linux

If you spend some time on Linux-based social media sites or forums, you inevitably see posts where a user is having trouble logging into their desktop. Either the boot finishes and they’re left looking at a black screen, or they can’t seem to get past the display manager login.

“I enter my user name and password, the screen goes black for a second, then it goes back to the login screen.”

One of the most common ‘fixes’ I see is the suggestion to reinstall the distro, or various parts of it. I cringe every time I see this. There’s really no reason to reinstall the OS unless one has been screwing around in the system to the point they’ve already trashed it beyond repair, or the installation ISO was bad to begin with. In which case reinstalling won’t fix anything when you’re using the same ISO to do it. In the second instance, here’s a suggested Rule of Thumb: always check the hash signature of a downloaded ISO against the one posted on the distro website before trying to install. Most distros put the signature right on the download page, but not all. With some you might actually have to search for elsewhere, but take the time to find and check it. Because it can save hours of headaches later. (Read the rest at Freedom Penguin)

DigiKam 4.13.0 Released, Install/Upgrade In Ubuntu/Linux Mint Or Derivatives


digiKam 4.13.0 released install in ubuntu linux

digiKam is an Open-Source project Photos management software, specially for KDE but you can use it on Ubuntu or others distros too. In digiKam photos are organized in albums which can be sorted chronologically, by folder layout or by custom collections. Developers recently released digiKam 4.13.0 with a list of 31 bug fixes.

Read At LinuxAndUbuntu

Canonical Patches Critical Linux Kernel Vulnerability in Ubuntu 15.04, Update Now

ubunutOn September 9, Canonical published a new Ubuntu Security Notice document informing users about a new kernel update for its Ubuntu 15.04 (Vivid Vervet) operating system, urging them to upgrade as soon as possible.

An integer overflow error has been discovered in Linux kernel’s SCSI generic (sg) driver, which could allow a local attacker that had write permissions to a SCSI generic device to crash the system via a DoS (Denial of Service) attack or gain root access.

Read more at Softpedia Linux News

Node.js Says All Is Forgiven, Welcomes io.js Fork Back into the Fold

Version 4.0.0 reunites code bases, adds features. The Node.js Foundation has released version 4.0.0 of the Node.js, the first version that reunites the JavaScript-based server-side web application framework with its io.js fork.

“This release represents countless hours of hard work encapsulated in both the Node.js project and the io.js project that are now combined in a single codebase,” the Foundation said in a technical blog post announcing the release.

Read more at The Register

Linux Kernel Developer Workspaces Video: Hans Verkuil

 

Hans Verkuil is a senior software engineer of R&D at Cisco Systems Norway. He maintains the part of the media subsystem in the Linux kernel that is focused on video receivers and transmitters, as well as the V4L2 bridge drivers and core V4L2 frameworks. He is currently working on adding HDMI Consumer Electronics Control support to the kernel and on improving colorspace support for the V4L2 subsystem.

Hans recently sent us a video tour of his office to contribute to our series that takes you inside the workspaces of Linux kernel developers. We’re in awe of many things about this workspace, but I can’t help but be impressed with the level of chaos going on in this space and the whiskey collection at the ready.

Hans says he both loves and hates the fact that his space is so messy. 

“For me a clean desk means that nobody works there, and that’s clearly not true of my desk. And I enjoy having everything I need close by. I’m also very pleased about the Lian-Li testbench, since that makes testing so much easier.” But Hans added, “It can be difficult to make room for a new board I need to test. Ideally I would like at least one additional desk.”

He says the most interesting workspace he’s ever used was when he worked for Dutch Space (now part of Airbus Defence & Space) on test equipment for the Herschel and Planck space observatories. He added, “While linux kernel development is a lot fun and very interesting and often technically challenging, it can’t compete with the coolness-factor of working next to a satellite in a clean room. I have to admit I still miss that.”

Take a look inside Hans’ workspace and see why he says his drawers next to his desk full of hardware are the most interesting part of his office. Hint: It has to do with testing and weeding out mistakes. 

https://www.youtube.com/watch?v=FEfSlk1EHNI?rel=0″ allowfullscreen=”true” frameborder=”0″ width=”425″ height=”350

Linux Foundation Diversity Scholarship Profile: Bonnie King

logo lf newSince we started organizing and hosting events, we made it a priority to reach out to new speakers and attendees and make our events welcoming to everyone. A few years ago, we started the The Linux Foundation’s diversity scholarship program to support those from traditionally underrepresented groups in the technology and/or open source communities. Not everyone has access to corporate or personal funds to attend these conferences, so we wanted to ensure that if someone was interested and had something to offer, we could help them attend.

A few days ago Bonnie King, a Linux administrator at Fermilab, reached out to thank us for sponsoring her through our diversity scholarship program. She attended this year’s LinuxCon (and the co-located CloudOpen and ContainerCon conferences), and I thought it would be great for people to meet one of the many who have taken advantage of this program in hopes to encourage others to apply as well.

King is a long-time Linux user who currently supports scientific workstations and online systems for physics experiments. She also contributes to Scientific Linux — building and maintaining packages and managing and publishing security errata for the distribution. We asked King to tell us more about herself and her experience with Linux.bonnieking crop

Q: Please tell us a little about your background.

I’m a long-time home Linux user and went to art school with a major in Drawing and Painting. After graduating I worked in my college’s computer lab, which was populated with some of the first Mac OSX desktops, so I was able to use some of the scripting and administration skills I had learned as a Linux hobbyist.

After a stint at Google as a datacenter technician, I became a Linux sysadmin. I would say I’m self-taught, at least in the beginning, except for the countless hours spent on IRC getting help from strangers.

Q: How did you become interested in Linux and open source?

My interest in Linux began when I got sick of looking for cracks for Windows 98 programs and installed Debian Potato.

Around that time (the early 2000s), I became interested in wearable computing and augmented reality. It was clear to me that the more we integrate technology with our bodies and minds, the greater the need for openness in hardware and software. I think that’s only more true today.

Q: How do you currently work with Linux? Are you involved in any open source projects?

I’m a sysadmin and support data acquisition computers and scientific workstations for physics experiments. My team also produces Scientific Linux, a Red Hat Enterprise Linux rebuild.

I’m also interested in open source and programming outreach. I’ve taught Python to women and their friends at the Chicago Python Workshop and led Bash and Linux classes. I’m also a fan, user and supporter of Open Source Hardware.

Q: What was the most meaningful part of LinuxCon for you?

Aside from the quality of the talks, it’s great to be able to attach faces to the names you’ve been seeing for years.

Josh Triplett’s talk on BITS, a Python interpreter that runs in ring 0 in GRUB (you can poke and peek at the firmware) pretty much blew my mind!

Q: Can you tell us more about your experience there?

I do wish there were more diversity at events like Linuxcon and really appreciate the Linux Foundation’s efforts in this area. I think seeing people like you in the community goes a long way toward feeling like you belong there.

Q: What are your goals for the future?

Finishing the Eudyptula Challenge.

If you’d like to apply for a diversity scholarship for the upcoming LinuxCon + CloudOpen + Embedded Linux Conference Europe event in Dublin, click here.

Exclusive Interview: Rancher Labs Founder Sheng Liang

rancherRancher Labs is a startup founded by a group of former engineers from Citrix Systems. The company has developed Rancher, a complete infrastructure platform for running Docker in production, as well as Rancher OS, a minimalist Linux distro that runs the entire OS as Docker containers. Sheng Liang, CEO and co-founder of Rancher Labs was the lead developer at the original Java Virtual Machine at Sun Microsystems. I spoke with Mr. Liang at LinuxCon NA to learn more about his new venture.

Swapnil Bhartiya: How did you get involved in technology and Linux in general?

Sheng Liang: My first job after school was a junior engineer on a Java virtual machine team at Sun. There I worked on bunch of infrastructure-related technologies. My association with cloud really started in late 2008 when I started a company called Cloud.com, and we built a piece of software called CloudStack that enabled organizations to create infrastructure as a service.

Then in 2011, Citrix acquired Cloud.com, and I became the CTO of cloud platforms group at Citrix. Last September, I left Citrix and I saw tremendous excitement and adoption and growth around containers and Docker, and that’s why I started Rancher Labs to specifically focus on building the next generation of cloud infrastructure and cloud software platforms. And that’s where Rancher came from.

What was the drive behind starting Rancher Labs, what problems did see in the market which you wanted to solve?

sheng-liangThe greatest opportunity we saw was that Docker was getting adopted at large scale by developers, by DevOps teams in developing environments, in build and test environments. We saw a great deal of potential in deploying Docker containers in production. We saw how companies like Twitter and Yelp were using containers, and I realized there is a great deal of potential in bringing that type of infrastructure, that type of platform to the enterprise, to the rest of the technology industry. This is really where Rancher Labs came from. We want to build the infrastructure and management software that enable our customers, our users, to deploy Docker containers in production.

What is the structure of the company?

We are a technology startup and have been in existence for just a year. We have over 20 people now and most of our employees are engineers. We are also very, very customer focused in a way. We believe the right way to really find technology and build a product is to have a very close, intimate engagement with customers. And the customers essentially give us all the insights that we need to build a better product. We have two full-time salespeople who are integral part of our product development process. They bring in the product and market perspective that we need to refine our product. Even though our vision has never changed, the product design and technology development changes constantly, depending on the evolution of the container industry itself.

Who are your typical customers and clients?

The kind of people who use Rancher are people who really want to put containers in production. So, there is no surprise that a lot of them are web companies and SaaS companies who have some operations running in the cloud.

You received $10 million in funding recently; how is this money being used and are you working on the next round of funding?

We actually closed series A funding a couple of months ago, which was funded by a couple of great investment firms here in the Silicon Valley. They share our vision of the potential and the market size of containers. Right now, we are executing the funding in primarily the development of the product and go to market. At this point, we just announced the funding and we are not actively looking at the next round of funding.

There are two competing and complementary container technologies such as Docker and Rocket by Core OS, what’s your perspective on this?

I think these things are coming together for the industry to truly benefit. We like to see a common standard for containers, that’s why we were very excited to be part of the Open Container Initiative under the Linux Foundation. They are working together to come up with a common container runtime that the entire industry can leverage. It’s very good for the industry because so far Docker has been the de facto standard for the container run-time, but going forward with the support for OCI by both Docker and CoreOS is a great thing for the industry.

Why did you choose open source to build your business?

I think for some of the fundamental infrastructure, run-time, or even some management technology open source is the way to go. To me, open source is really not about doing things for free, it’s about organization, customers, partners, and vendors all coming together to collaborate on developing the technologies that greatly accelerates the growth, maturity, and the adoption of the technology. That is the true power of open source. And when that happens, a lot of customers have no problem paying a commercial vendor like us to actually help them truly utilize, maintain, and support the underlying technology.

So, with open source you get the best of both worlds: on one hand, you get a great deal of collaboration, cooperation and innovation, and on the other hand, you are able to build a very good business model around it. We are very happy with that, and this is not the first time I have been personally involved with open source. My previous company, Cloud.com, developed the Cloud Stack. It later became Apache Cloud Stack; we contributed it to the Apache Software Foundation. So, we know this process very well, and we have been able to build very good business around open source.

Sharing Files with Samba the Easy Way

Yeah, I hear you talking but I don’t believe a word. “You say you’re gonna keep it simple.” “You say you’re gonna stick to just having one Linux machine to play around with and you’re not gonna need to think too much about networking.” Well, let me tell you that it just doesn’t work that way at all.

You see, there is one dirty little secret that long time Linux users know but keep to themselves. Something no one tells newbies. But I will. So here it is: Linux is highly addictive, and having one Linux machine is like eating just one potato chip. You can’t do it, I tell you! Second hand computers are cheap and Linux is a free download, so there’s nothing stopping you form finding yourself with a house full of happy Linux boxes, all humming away. There’s always another reason to add one more machine… Just wait, you’ll see. (Read the rest)

WiFi Without Network Manager Frippery

Back in my day, sonny…there was a time when you could make your networking work without the network manager applet. Not that I’m saying the NetworkManager program is bad, because it actually has been getting better. But the fact of the matter is that I’m a networking guy and a server guy, so I need keep my config-file wits sharp. So take out your pocket knife and let’s start to whittle.

Begin by learning and making some notes about your interfaces before you start to turn off NetworkManager. You’ll need to write down these 3 things:

1) Your SSID and passphrase.
2) The names of your Ethernet and radio devices. They might look like wlan0, wifi0, eth0 or enp2p1.
3) Your gateway IP address.

Next, we’ll start to monkey around in the command line… I’ll do this with Ubuntu in mind. (Read the rest at Freedom Penguin)

WhatsApp vCard Vulnerabilities Expose Millions of Users

Security flaws within the WhatsApp application had the potential to trick users into executing arbitrary code on their systems.

Severe vulnerabilities within the WhatsApp mobile application which tricked users into executing malicious, arbitrary code have been patched. Researchers from security firm Check Point explained the security issues in detail on Tuesday. In a blog post, the team said Whatsapp Web is at fault, and “significant” vulnerabilities discovered by Check Point researcher Kasif Dekel can trick victims into executing arbitrary code.

Read more at ZDNet News