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20140304-1 选题
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Daily Ubuntu Tips – Fix Black Screen In Ubuntu Guest With VirtualBox Screen Capture
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================================================================================
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VirtualBox is a software that allows users to run multiple guest operating systems on a single host computer. It’s supports Windows, Mac OS X and Linux and is maintained my Oracle.
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We’ve written a lot on VirtualBox here. Do a quick search and you’ll see all the articles about VirtualBox.
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Now, here’s the story: VirtualBox comes with a feature that allows users to quickly take or capture screen shots of active guest machine sessions. These screenshots can then be shared with the host machine using the clipboard.
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The sad thing about it is, it won’t work if certain feature in Ubuntu guest machines is enabled. It had always been a pain until just recently when I stumbled upon the solution.
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Without this solution, when you take a screenshot in Ubuntu guest machines, the image will be completely dark and not useful at all.
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I dug solutions with no luck until just now.
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To enable bidirectional clipboard with Ubuntu guest and the host machine, click on the Ubuntu guest machine and select **Settings**. Then navigate to **General –> Advanced Tab** and enable it.
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Now, in theory, when you start the Ubuntu guest machine and press the **Print Screen** key or **Ctrl + Print Screen** keys, the guest machine should take a screenshot of its current desktop session.
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You can then save it to the clipboard and access these images from the host machine.
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But if you also enable **3D Acceleration** feature for Ubuntu guests, the images will be completely dark.
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To fix that, you must disable 3D acceleration for Ubuntu guest machines.
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To disable it, select the Ubuntu guest machine and click **Settings**. Then navigate to **Systems – Display –> Video** tab and disable 3D Acceleration.
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Well, you must disable 3D for Ubuntu guests in order to get this to work. Now launch the guest machine and try taking a screen shot.
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Hope this helps.
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Enjoy!
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--------------------------------------------------------------------------------
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via: http://www.liberiangeek.net/2014/02/daily-ubuntu-tips-fix-black-screen-in-ubuntu-guest-with-virtualbox-screen-capture/
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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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Five of the Best Ubuntu 14.04 Wallpaper Contest Entries
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================================================================================
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**With less than one week to go until its deadline, the Ubuntu 14.04 wallpaper contest pool is overflowing with stunning submissions, all vying for a place on the default Ubuntu install image.**
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Ahead of the panel picking their favourites in early March I had a rummage through the entries myself.
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Whether or not any of the choices highlighted below are selected for inclusion in the Trusty Tahr is beside the point; these are some fantastic creative snaps that are worthy of a place on anyone’s desktop.
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### 1. boat2 ###
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boat2 by Christos Kyriazidis
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### 2. Frosty Sunrise ###
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Frosty Sunrise by Brian Fox
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### 3. IMGP8932 ###
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IMGP8832 by Eduardo Diez Viñuela
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### 4. Travel ###
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Travel by Goldenfox
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### 5. Kingfisher ###
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Kingfisher by Gilberto Fotos
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### Best Cat Entry ###
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It’s a tradition of ours to also highlight a cat-themed submission. Why? Because cats are so dang cool, yo! Thankfully (yes, cos picking between cute moggies is always difficult) there was just one lone feline entry this year:
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Red Cat by Hjalte Nielsen
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But who cares what we here at OMG! think – which entries from the pool are you hoping make it onto the default image?
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--------------------------------------------------------------------------------
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via: http://www.omgubuntu.co.uk/2014/02/ubuntu-14-04-wallpaper-picks
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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]:
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[2]:
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[3]:
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[4]:
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[5]:
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[6]:
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[7]:
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[8]:
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[9]:
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[11]:
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[12]:
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GitHub's New Atom Text Editor Is Open Source, Sort Of, Though Not Really
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================================================================================
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**GitHub has a new not-very-open open-source text editor, and nobody seems to care.**
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Samuel Greenwald [claims][1] that "any IT leader who can't grasp an open source mindset is doomed to fail." While this may be true, people can be forgiven for not fully grokking open source, given the weird licensing gyrations that even the most open source savvy among us can go through.
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Take GitHub, for example. GitHub just released its [Atom][2] text editor to much acclaim. While [some lauded Atom][3] as "completely open source," it's not. Not even close.
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### Kind Of, Sort Of Open Source ###
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Not that GitHub is dressing up Atom as open source. Not all of it, anyway. As GitHub co-founder Tom Preston-Werner specifies, only "Atom core" code will be closed source, while "all the existing MIT-licensed repos under the Atom org will remain so forever." The reasons are purely commercial, as he [notes][4]:
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> Atom won't be closed source, but it won't be open source either. It will be somewhere in-between, making it easy for us to charge for Atom while still making the source available under a restrictive license so you can see how everything works. We haven't finalized exactly how this will work yet. We will have full details ready for the official launch.
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Back in the early days of open source, we had a name for this. Actually, Microsoft did. It was called "Shared Source." [Launched in 2002][5], Shared Source was Microsoft's way of giving its community a way to look but not touch (or redistribute) Microsoft's code. It didn't go so well for Microsoft, as SAP's Big Data chief Vijay Vijayasankar reminds us, but GitHub might do better:
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> [@dberkholz][6] I remember the OSI peeps criticized MS quite heavily that it is a marketing stunt . But GitHub might make it alright this time
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> — Vijay Vijayasankar (@vijayasankarv) [February 27, 2014][7]
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He might be right.
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### The GitHub Generation Can't Be Bothered ###
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Microsoft, after all, was the evil empire, smearing open source as a "cancer," among other things. GitHub? It's the foster parent for open source projects everywhere. [In 2013[8] GitHub topped 10 million repositories and 3 million new users, with frenetic weekly activity: 20,000 issues, 50,000 comments, and 250,000 pushes on repositories maintained by contributors all over the world.
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GitHub is, in other words, ground zero for open source.
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Perhaps because of this, GitHub is getting a free pass. In the [HackerNews commentary][9] on the move, [few seem to be too bothered][10] that GitHub isn't actually opening up Atom. As a community, open source has largely won out over free software: less dogmatic, more practical. We've come to the point that many in the so-called "GitHub generation" [don't even bother to assign a license to their software at all][11].
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Is this a good thing?
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It's hard to say, and even harder to argue with GitHub's approach given that it doesn't seem to be hurting anyone and potentially helps many by giving the world a high-quality, low-cost text editor. The open-source community is increasingly libertarian: less likely to prescribe licensing and more concerned with good code and good products.
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It's why GitHub, Atlassian and Amazon Web Services, which all rely on proprietary software or services to make money, can be so phenomenally popular with open-source developers.
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Have we finally grown up?
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--------------------------------------------------------------------------------
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via: http://readwrite.com/2014/02/28/github-atom-text-editor#feed=/hack&awesm=~oxpErHVIIaxz3H
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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.cioinsight.com/blogs/open-source-has-changed-everything.html#sthash.ESY4Kc3r.u8rX81Ow.dpuf
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[2]:https://github.com/atom
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[3]:http://thenextweb.com/apps/2014/02/26/github-releases-text-editor-coders-named-atom/#!xHNqf
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[4]:http://discuss.atom.io/t/why-is-atom-closed-source/82/8
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[5]:http://www.geek.com/news/microsoft-rep-clarifies-shared-source-initiative-550824/
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[6]:https://twitter.com/dberkholz
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[7]:https://twitter.com/vijayasankarv/statuses/438882094429642752
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[8]:http://octoverse.github.com/
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[9]:https://news.ycombinator.com/item?id=7302941
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[10]:https://news.ycombinator.com/item?id=7310017
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[11]:http://readwrite.com/2013/05/15/open-source-is-old-school-says-the-github-generation#awesm=~ox6tkvcaUwiEF0
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How to enable 32-bit support for 64-bit Ubuntu 13.10 or greater
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================================================================================
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Most of you who use Ubuntu/Debian based distributions prefer the 64-bit mode, right? That’s because 64-bit architecture utilizes the full capabilities of your hardware. It enables you to use applications with intensive memory requirements and actually use them without having to wait for an hour after every little thing you do. Now, there are merits to 32-bit mode, most notably the fact that there are not many incompatibility problems with it. Every time Java did an update there was confusion as most users didn’t have the required libraries. In the past, some other early applications and drivers simply did not have 64-bit versions.
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So let’s say you do have a 64-bit mode architecture and you use applications who have the proper support: Drivers, 64-bit versions and everything you need. No problem then, right? There comes a moment though when you have to use 32-bit applications in your 64-bit system. What then? That’s when you read this article and follow it to the letter. If you don’t have Ubuntu/Debian based distributions 13.10 or greater you used to have to install a meta-package called ia32-libs. Now this package has been deprecated so you have to do it manually.
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The following commands work for Ubuntu/Debian based distributions 13.10 or greater.
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1st Step: Verifying you have 64-bit kernel architecture.
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You open the terminal and type:
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dpkg --print-architecture
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You‘ll see something like:
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amd64
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That means you’re okay.
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2nd Step: Verifying you have multi-arch support enabled. (Multi-arch support allows you to use 32-bit libraries alongside 64-bit libraries.)
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Type:
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dpkg --print-foreign-architectures
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The output is:
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i386
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If you don’t have multi-arch support you have to enable it.
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Alternative 2nd Step: Enabling multi-arch support.
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Type:
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sudo dpkg --add-architecture i386
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sudo apt -get update
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It starts downloading the update and running it.
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After that you type:
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sudo apt-get dist-upgrade
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It will check if there are newer libraries of the packages you already have.
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If there are, it will ask you if you want to update (y/n).
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After that you’re done. You have successfully installed 32-bit support for your 64-bit system.
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--------------------------------------------------------------------------------
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via: http://www.unixmen.com/enable-32-bit-support-64-bit-ubuntu-13-10-greater/
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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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27
sources/Meet uGet, an Amazing Download Manager for Linux.md
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sources/Meet uGet, an Amazing Download Manager for Linux.md
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Meet uGet, an Amazing Download Manager for Linux
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================================================================================
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Great download managers are not a common occurrence on the Linux platform, but there are a few that have amazing features and uGet is one of them.
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When people thing about download managers on the Linux platform, they usually imagine something in a terminal. For the most part they are right. There are a lot of download managers that work in a terminal and are very good at what they are doing, but sometime you just need a friendly GUI on top.
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[uGet][1] is a very powerful download manager that has some many features it’s actually difficult to count them all. The interface is built in GTK+3, which means that it will look great on most Linux operating systems.
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It also comes with a download queue, the possibility to resume downloads (if the server supports it), clipboard monitor, support for HTTP, HTTPS, FTP, BitTorrent, and Metalink, batch downloads, FTP login, scheduler, Aria2 plugin, and my personal favorite, multiple segments (allow the client to connect multiple time to the same server and get multiple segments at the same time, increasing the speed).
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To top it all off, it can be easily integrated into Firefox, with the help of the Flashgot add-on, and has a dedicated extension for Chrome.
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The developers provide multiple packages for all the imaginable type of Linux distributions, and you have to keep in mind that it’s completely free.
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Enjoy!
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--------------------------------------------------------------------------------
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via: http://news.softpedia.com/news/Meet-uGet-an-Amazing-Download-Manager-for-Linux-430085.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://ugetdm.com/
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Xperience UI Concept Could Be the Most Beautiful Linux Desktop
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**The Xperience UI is a proof of concept developed for a Nitrux built OS, and if it will ever be brought to fruition, it will probably be one of the most beautiful desktops around.**
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Most Linux desktop can be easily recognized by the members of the community and even if some people manage to get the operating system to look interesting, the Nitrux Xperience UI concept is absolutely gorgeous.
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Nitrux developers are mostly known for the icon packs and for a few other endeavors, but the quality of this desktop surpasses almost everything that we can find today.
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It reminds a little of elementary OS, but at the same time it features a very serious and distinctive look. It’s hard to see of the details, but the notification area, the lockscreen, and the dashbroad are to die for.
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The concept seems to be oriented towards touch screens, but it would also do wonders on a desktop system. We can only hope that one of the upcoming distros that are supposed to be in development under the Nitrux wing will actually look like this.
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Even if it will never make it (although we have high hopes that it will), this is proof that Linux designs is head and shoulders above all other operating systems out there.
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Desktop
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Mini-Dash Apps
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Mini-Dash - Notifications
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Mini-Dash - Recent Documents
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Mini-Dash - Quick Settings
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Mini-Dash - Shutdown
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Dashboard
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--------------------------------------------------------------------------------
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via: http://news.softpedia.com/news/Xperience-UI-Concept-Could-Be-the-Most-Beautiful-Linux-Desktop-430087.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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