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20140612-1 选题
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Dpkg Vulnerabilities Closed in Ubuntu 14.04
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**Canonical has announced that a dpkg vulnerability in its Ubuntu 14.04 LTS, Ubuntu 13.10, Ubuntu 12.10, Ubuntu 12.04 LTS, and Ubuntu 10.04 LTS operating systems has been corrected.**
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The company has just released a new update for the dpkg package, fixing a problem with this very important software that is used in all Ubuntu versions.
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“It was discovered that dpkg incorrectly handled certain patches when unpacking source packages. If a user or an automated system were tricked into unpacking a specially crafted source package, a remote attacker could modify files outside the target unpack directory, leading to a denial of service or potentially gaining access to the system,” reads the security notice.
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For a more detailed description of the problems, you can see Canonical's [security notification][1]. Users have been advised to upgrade their systems as soon as possible.
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The flaws can be fixed if you upgrade your system(s) to the latest libdpkg-perl packages specific to each distribution. To apply the patch, run the Update Manager application.
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In general, a standard system update will make all the necessary changes and users won't have to restart the PC or the laptop in order to apply the patch. This update can also be performed from the terminal, with the apt-get dist-upgrade command.
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via: http://news.softpedia.com/news/Dpkg-Vulnerabilities-Closed-in-Ubuntu-14-04-446282.shtml
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译者：[译者ID](https://github.com/译者ID) 校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出
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[1]:http://www.ubuntu.com/usn/usn-2242-1/
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Linux hiring frenzy: Why open source devs are being bombarded with offers to jump ship
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> Summary: Figures from the Linux Foundation suggest skills shortages across disciplines and throughout Europe.
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Nine out of ten (87 percent) of hiring managers in Europe have "hiring Linux talent" on their list of priorities and almost half (48 percent) say they are looking to hire people with Linux skills within the next six months.
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But while they either need or want to hire more people with Linux skills, the data from the Linux Foundation suggests that this is easier said than done. Almost all — 93 percent — of the managers surveyed said they were having difficulty finding IT professionals with the Linux skills required and a quarter (25 percent) said they have "delayed projects as a result".
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All of this makes it a good time to be a Linux expert.
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Seven out of 10 Europe-based Linux professionals have received calls where they were pitched new positions in the past six months, and a third said they had received more calls than in the previous six months. One in three are looking to move anyway, and over half of them said it would be fairly or very easy. Salary is the biggest reason to move jobs, followed by work-life balance and the chance to gain additional skills.
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Employers are trying harder to keep hold of staff too: In the past six months, 29 percent of Linux professionals say they have been offered a higher salary from their current employers, while a quarter said they’ve been offered a flexible work schedule and one in five have been extended additional training opportunities or certification.
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The Linux Foundation, a non-profit organisation which supports the growth of Linux, and Dice Holdings, which provides career sites for technology professionals, produced the research which covers Europe and the US.
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In terms of the specific skills organisations are looking for people with the developer (69 percent) and enterprise management (51 percent) skills. These are followed by 32 percent of respondents who are looking for people with a combination of development and operations skills (DevOps), and 19 percent who are in management/IT management.
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The Linux Job Report has been produced for the last three years by the Linux Foundation and Dice but this is the first time that a specific report on European skills has been separated out of the worldwide report. Some 893 Linux professionals responded to the survey across Europe.
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via: http://www.zdnet.com/linux-hiring-frenzy-why-open-source-devs-are-being-bombarded-with-offers-to-jump-ship-7000030418/
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译者：[译者ID](https://github.com/译者ID) 校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出
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The Companies That Support Linux: Rackspace
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[][1]
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[Rackspace][1] has lately been in the news for its stock market gains and a [potential acquisition][2]. But over the past 16 years the company has become well known, first as a web hosting provider built on Linux and open source, and later as a [pioneer of the open source cloud][3] and founder of the OpenStack cloud platform.
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In May, Rackspace became a [Xen Project][4] member and was one of [three companies to join the Linux Foundation][5] as a corporate member, along with CoreOS and Cumulus Networks.
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“Many of the applications and infrastructure that we need to run for internal use or for customers run best on Linux,” said Paul Voccio, Senior Director of Software Development at Rackspace, via email. “This includes all the popular language frameworks and open virtualization platforms such as Xen, LXC, KVM, Docker, etc.”
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In this Q&A, Voccio discusses the role of Rackspace in the cloud, how the company uses Linux, why they joined the Linux Foundation, as well as current trends and future technologies in the data center.
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### Linux.com: What is Rackspace? ###
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Paul Voccio: Rackspace is the managed cloud specialist and founder of OpenStack, the open-source operating system for the cloud. Hundreds of thousands of customers look to Rackspace to deliver the best-fit hybrid cloud solutions for their IT needs, leveraging a product and services portfolio that allows workloads to run where they perform best – whether on the public cloud, private cloud, dedicated servers, or a combination of platforms.
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As a managed cloud pioneer, we give our customers 24x7 access to cloud engineers for everything from planning and architecting to building and operating clouds through our award-winning Fanatical Support®. We help customers successfully architect, deploy and run their most critical applications. Or, more plainly put, we’re cloud specialists so you don’t have to be. We are headquartered in San Antonio, Texas, and operate a global support and engineering organization with data centers on four continents.
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### How and why do you use Linux? ###
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Rackspace uses Linux because it provides a stable and flexible platform for our customers' workloads. Our customers trust us to support their mission-critical applications and we need reliable infrastructure – including software and hardware – to meet their expectations. If you look under the hood in our dedicated environments or in our expansive cloud infrastructure, you'll find Linux running there.
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Many of the applications and infrastructure that we need to run for internal use or for customers run best on Linux. This includes all the popular language frameworks and open virtualization platforms such as Xen, LXC, KVM, Docker, etc. Running combinations of these platforms give us the stability and performance we demand for the Rackspace Cloud. Our Cloud Servers product runs OpenStack services that manage tens of thousands of hypervisors – all running Linux.
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Using Linux also allows us to tap into a community of experts to solve problems. When we have an issue, we're comfortable asking questions. When we have a solution, we enjoy sharing it with the community. At Rackspace, we understand how to work and contribute in an open community and Linux has many opportunities to build relationships with other groups that have similar goals.
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### Why did you join the Linux Foundation? ###
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Joining the Linux Foundation allows us to show our support and engage the Linux community in new ways. We've learned plenty from running Linux in highly demanding environments at a large scale and we're eager to share those experiences. Other members of the community have probably run into different challenges than we have and this gives us a greater opportunity to learn from them as well.
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### What interesting or innovative trends are you witnessing in the data center and what role does Linux play in them? ###
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Virtualization and automation have changed how companies deploy hardware and software. Linux gives us several virtualization options and these allow us to automate more of our infrastructure deployments and maintenance tasks. Automation and configuration management frameworks allow us to reduce our costs, improve our testing capabilities, and bring products to market faster. The majority of these open source automation frameworks run best on Linux servers.
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### How is Rackspace participating in that innovation? ###
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We leverage several open-source Linux-based tools and projects to deliver great customer outcomes. One of our largest efforts in this area is with OpenStack. It's the software that runs our public and private clouds and we're actively engaged with the community to improve it. We're using Linux to find new ways to scale our large virtualization platform and deliver infrastructure to customers quickly.
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The open-source nature of Linux inspires us to share the majority of these discoveries with the community. Our customers can improve OpenStack and those improvements will eventually make it into our product offering. We make contributions to a countless number of open source projects either as a company or as individual Rackers (our employees are called "Rackers") and many of these projects are designed to run on Linux.
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### What other future technologies or industries do you think Linux and open source will increasingly become important in and why? ###
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The move to software-defined infrastructure is a big shift. Customers already have access to virtualization platforms like Xen that allow them to define their infrastructure with software. Software-defined networking is quickly becoming more mature and scalable. However, customers want the ability to have a software defined datacenter at their fingertips. This may involve physical servers, virtual servers, and virtual networks that need high performance with flexible configurations. Many of the current technologies are designed to run on Linux due to technology already available in the kernel or userland frameworks provided by the community.
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### Are you hiring? ###
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From hacking on kernels to supporting thousands of virtual machines – we are always looking for talented admins, developers and engineers. You can find more information at Rackertalent.com.
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--------------------------------------------------------------------------------
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via: http://www.linux.com/news/featured-blogs/200-libby-clark/775890-the-companies-that-support-linux-rackspace/
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译者：[译者ID](https://github.com/译者ID) 校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出
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[1]:http://www.rackspace.com/
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[2]:http://www.bloomberg.com/news/2014-05-15/rackspace-hires-morgan-stanley-to-evaluate-options.html
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[3]:http://www.informationweek.com/cloud/infrastructure-as-a-service/9-more-cloud-computing-pioneers/d/d-id/1109120
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[4]:http://www.xenproject.org/
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[5]:http://www.linuxfoundation.org/news-media/announcements/2014/05/new-linux-foundation-members-advance-massively-scalable-secure
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81
sources/talk/20140612 What is a good text editor on Linux.md
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What is a good text editor on Linux?
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Want to launch a heated debate among Linux aficionados? Ask them what is their favorite text editor. In the open source community, choosing a software to write text with, and potentially to write code with, is such an important decision that choosing a football team or a game console is less dangerous. But anyone new to Linux should not be apprehensive of the plethora of advice and the variety of trolls on the topic, and instead try to get familiar with a bunch of different text editors in the first place. So today I shall propose you a non-exhaustive thematic list of what you can find to write text with on Linux. This list will (try to) exclude the full-fledge IDEs, which are only made for programming, and the editors made specifically for LaTex. If you are interested in the latter, I can recommend you to [this post][1].
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### 1. Vim & Emacs ###
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Let's go straight to the big guys. When someone asks about text editors on Linux in a room, one person will immediately respond [Vim][2] and another will say [Emacs][3]. And there are very good reasons for that. They are both very powerful editors, with a lot of features, a lot of plugins, and a very strong community ready to support anyone. If you are not familiar with them at all, it would be a bit hard to describe the extent of their capabilities. But put simply, they allow you to move very quickly within the text, make huge edits very simply, record macros, and do basically any crazy things you might want to do with text. The downside to both of them is that the learning process to control what you are doing is unavoidable and takes time. Past this point, I will not sink into the debate of declaring one better than another, but really recommend that everyone learn at least one of the two.
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### 2. Sublime Text & Lime & Atom ###
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Another text editor which has been on the rise for these past years is [Sublime Text][4]. Some may see it as a friendlier version of Vim or Emacs, clearly designed for programming. Indeed, it retains some similarities like the batch edition and the goto function which will remind some of Emacs or [an energized Vim][5]. However, it remains more visual and accessible. Also, the large number of plugins will seduce those inclined to customization.
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The only gray point to Sublime Text is its license: if you only use open-source, go away. Hopefully, to deal with that, an ambitious clone called [Lime][6] appeared recently. It is still under heavy development, but the spirit is here: a similar experience to Sublime Text, with the after taste of open source. Nothing more to say except admiring the effort.
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Even more recently, [Atom][7], the official competition to Sublime Text coming from GitHub was released also as open source. Wanting to provide a full-featured out of the box editor, Atom comes packaged with all you need to jump around files, use code snippets, etc. However, its strength remains in its easy customization process based on HTML and CSS, and its Node.js integration. This is as far as we will go in this list before actually reaching the definition of an IDE.
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### 3. Gedit & Kate & Mousepad & Leafpad ###
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If we leave the realm of the super-powered editors, we can turn to what I see as the "desktop environment classics." These editors are more traditional in the sense that some can be enhanced with plugins, but that their focus is simply to write text. If you have an idea in mind and want to jolt down something before you forget about it (I blame video games for my short attentions span), you are not going to learn or even need the shortcuts in Vim or Sublime Text. You just want to some blank space. The good thing about these editors is that they are more or less well integrated with your desktop environment. In this category, [Gedit][8] and [Kate][9], for Gnome and KDE respectively, mirror their environment, and are customizable via plugins, which makes it easier to write LaTeX, for example. [Mousepad][10] and [Leafpad][11] are more appropriate for lightweight desktops like Xfce and LXDE. They are in a way close to Windows' notepad. So if you are looking for flexibility and accessibility, pick here.
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[][12]
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### 4. Nano & Qute ###
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Another popular "family" of text editors is the distraction-free editors. If you like to have Facebook or Twitter opened constantly in the background, or receive an email every five minutes, you know how difficult it can be to focus on that essay due tomorrow, or this code not compiling. In this case, you need an editor that will take the whole space on the screen, and block everything else.
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Probably the least favorite of this kind is Nano. If you want to block any distraction, go without X server. It is simple and straightforward. In fact, George R. R. Martin, the author of Game of Thrones, recently [revealed in an interview][13] that he uses a similar DOS Word processor to write his novels.
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If you prefer something a bit more keen on the eye, you could like my personal favorite: [Qute][14]. No fancy features, maybe a bit of LaTeX to look nice, but the weight is really on the interface. It proposes a beautiful navigation and edition experience. If you are uneasy because of the terminal, Qute is a good alternative.
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### 5. LibreOffice & Calligra & Abiword ###
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Finally, an office suite is also a text editor. I doubt you can code easily on that, but it will certainly be more appropriate for plain text and more quick to pick up than LaTeX. In this category, it would be impossible to avoid [LibreOffice][15] and [Calligra][16], the two behemoth in term of featues and fame. I like both of them, but a lot of people have a clear preference for the former over the latter. If you miss Microsoft Word, you will be in your realm. A bit of the underdog, [Abiword][17] is a lightweight alternative to those. If you goal is just to edit a word document, and you do not care about spreadsheets or databases, Abiword will do the trick while preserving the features.
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To conclude briefly, if I had one advice to give, it would be to pick the editor that people around you use. If for some crazy reason everyone you know uses LibreOffice to code in C, or Sublime Text to write a novel, and that you have to do something similar, you should follow the trend. The reason being that if you encounter a problem and need some help, it will be easier for them to bring it to you.
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What is your favorite text editor? What do you use it for? Please let us know in the comments.
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--------------------------------------------------------------------------------
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via: http://xmodulo.com/2014/06/good-text-editor-linux.html
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译者：[译者ID](https://github.com/译者ID) 校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出
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[1]:http://xmodulo.com/2014/04/latex-editor-software-linux.html
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[2]:http://www.vim.org/
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[3]:https://www.gnu.org/software/emacs/
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[4]:http://www.sublimetext.com/
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[5]:http://xmodulo.com/2014/06/turn-vim-full-fledged-ide.html
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[6]:http://limetext.org/
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[7]:https://atom.io/
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[8]:https://wiki.gnome.org/Apps/Gedit
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[9]:http://kate-editor.org/
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[10]:http://www.home.unix-ag.org/bmeurer/xfce/apps.html
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[11]:http://tarot.freeshell.org/leafpad/
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[12]:https://www.flickr.com/photos/xmodulo/14415259703/
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[13]:https://www.youtube.com/watch?v=X5REM-3nWHg
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[14]:http://www.inkcode.net/qute
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[15]:https://www.libreoffice.org/
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[16]:http://www.calligra-suite.org/
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[17]:http://www.abisource.com/
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62
sources/tech/20140612 Command Line Tuesdays--Part One.md
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Command Line Tuesdays – Part One
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================================================================================
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Here we are geekos, back in action! Sorry it’s been a while, but let me just assure you we’re back on track, raging to meet the deadlines and to, well, have some fun :)
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Now, the whole idea was pretty much completely summed up in the introductory text posted a fortnight ago, so we may get down to business. As the book by Mr. Shotts instructs, we need to know what a shell is, as we’ll be operating withing it, and what a terminal emulator is.
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A shell, Mr Shotts states, is actually what we’re talking about when we’re talking about command-line. The shell is basically a program that passes the strokes of your keyboard to your computer, a translator of some sort, so your computer knows what you’re saying. There are many shells in existence, but the most widespread shell used in GNU/Linux distributions is called **bash**, or Bourne Again Shell. It’s a clever wordplay, as Mr Bourne created the bash’s predecessor, **sh**, and Brian Fox wrote it as a free alternative for sh. Ahhh, GNU people and their humor, very clever :)
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Next thing we need so we can interact with the shell is a terminal emulator. Every Linux distribution comes with one, depending on the desktop environment you use, so it should be **Konsole** from KDE, **Gnome terminal** in Gnome etc. Mr. Shotts says you probably develop a preference for one, but I use what the desktop environment provides me, most of the time.
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Now, fire up your terminal. You get a line, stating your user name and the machine’s host name. This is called the shell prompt. It means it’s ready for you to enter a command. Let’s try something random. Type in anything, and press enter.
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Hehe, remember the introductory saying we need to learn the commands as a poem? There we go, random doesn’t work.
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Now, press the up arrow, and you’ll see the command reappear. What’s this sorcery? The up arrow key on your keyboard is for accessing the command history. The terminal saves up to 500 commands you entered, so to not type them over and over, you can look for them with the up/down arrow. The left and right arrows are for moving the cursor within a specific line, so you can edit the text in between. Now there’s another thing – **ctrl+v** for pasting text doesn’t work. You can set it up as a shortcut somewhere, but it’s usually something else. Check your terminal emulator’s shortcuts! (in Konsole, it’s Settings > Configure shortcuts)
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Now, for us not to get the ‘command not found’ slap to the face, let’s try something simple. Type **date**. (Yes, I didn’t know there’s a command for this, so it’s exciting for me also) :)
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There you go. Why bother looking at your built in calendar in the clock, when you can fire up your terminal and type date, and see what day it is :) Just kidding, as Mr Shotts states, it’s a simple command, the more useful/difficult ones are coming next time. The related command to date is cal – it will display the current month’s calendar.
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You may also try **df**, and it will list free space on your drives.
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Or **free**, to display the amount of free memory:
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If you’re already in the type-only mood, you can enter the command **exit** to get out of the terminal emulator instead of pressing the x button.
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…and we’ll stop to a halt for this week so it won’t be too much to ingest on your already tight schedule. Too sum it up (you can write this conclusion down, for repetition), in part one, we learned:
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- what is a shell
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- what do we need to communicate with the shell (terminal emulator)
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- navigating the terminal commands with cursor buttons and exiting the terminal
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Four simple commands:
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- **date** – displays the current date
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- **cal** – displays the current month’s calendar
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- **df** – shows the amount of free space on your hard drives
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- **free** – amount of free memory
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### What will we do next Tuesday? ###
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We learn navigation through the file system (what are all those bin etc etc. folders, what are they used for, how to navigate through them via the terminal). Until then…
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### …have a lot of fun! ###
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--------------------------------------------------------------------------------
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via: https://news.opensuse.org/2014/06/10/command-line-tuesdays-part-one/
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译者：[译者ID](https://github.com/译者ID) 校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出
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