20130913选题

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How to choose the best Linux server for your business
=====================================================
The right Linux server for your business just might be the one that offers your staff the level of support they need.
![img](http://www.itworld.com/sites/default/files/best-penguin.jpg "penguins")
Image credit: flickr/Pete
There may only be dozens of Linux servers, compared to over a thousand Linux desktops, but it's still not easy picking the right one for your enterprise. Let me help. With over twenty years of Linux experience, I know a thing or two about Linux servers.
> [Ubuntu impresses in test of Linux servers][1]
> [The first rule of choosing a desktop Linux distribution: User, know thyself][2]
I think the single most important factor in choosing a Linux server is how experienced (or not) your IT staff already is with Linux. While Linux expertise is easier to find than it used to be, there's still nothing like enough Linux IT professionals out there.
When I went to OSCon, the major open-source convention, earlier this year in Portland OR, everyone, and I checked and it really was everyone (even some company named Microsoft), was looking to [hire people with Linux and open-source experience][3].
In particular, employers are having trouble finding staffers with [a few years of Linux experience][4] under their belts. That is to say, exactly the employees you need to keep your Linux server trains running on schedule.
What that means for you is that if you don't already have a crew of Linux veterans, you should avoid Linux server distributions, such as [Debian][5], that don't have a vendor to back them up with training and support.
Don't get me wrong. Debian's great with an experienced staff, but if your people can't tell BASH from C Shell you don't want them using Debian.
The best Linux server for those new to Linux
- RHEL
- SUSE
- Oracle Linux
- Turnkey Linux
If your crew is new to Linux you need to use a commercial Linux. Here, as anyone can tell you, your Linux of choice is [Red Hat Enterprise Linux][6].
Red Hat didn't get to be the [first billion-dollar Linux company][7] by not supporting businesses. More so than any other Linux, RHEL has all the tools -- [corporate support][8], [professional certification][9], [hardware certification][10], and automatic online updates with [Red Hat Network (RHN)][11] -- that keeps CFOs and CIOs happy.
That said, Red Hat does have a serious rival: [SUSE Linux Enterprise Server (SLES)][12].
Like RHEL, SLES comes with [support][13]; [staff certification][14], via sister company Novell; [hardware certification][15]; and [online updating][16].
So, how do you choose between them? You do it by testing them out. Both make it free and easy to do. Personally, I've used both RHEL and SLES. For me it comes down to the exact fit between a business's requirements and the operating system. With the right situation, either will work.
There is another enterprise Linux choice: [Oracle Linux][17]. Although it is for all intents and purposes a copy of RHEL, I really don't care for it myself. The only people I know who use it are from businesses that have put all their IT eggs into the Oracle basket.
The best Linux server for non-experts
- CentOS
- openSUSE
- Ubuntu Server
Let's say you're in middle. Your people know some Linux but they're not Linux experts. What then?
For you I have several recommendations. First, if you like the RHEL way of doing things, [CentOS][18], a free RHEL clone, deserves your attention.
CentOS is very popular. If you have an Apache Web server on almost any Web hosting service, odds are good you're already running CentOS under your site. There are also many sources of free online support for this distribution.
If youre worried about Red Hat pulling the rug out from underneath CentOS, don't be. While Red Hat has no love for Oracle Linux, Red Hat CEO James Whitehurst, recently said, "CentOS is one of the reasons that the [RHEL ecosystem is the default][19]. It helps to give us an ubiquity that RHEL might otherwise not have if we forced everyone to pay to use Linux. So, in a micro sense we lose some revenue, but in a broader sense, CentOS plays a very valuable role in helping to make Red Hat the de facto Linux."
Another useful choice for people who know some Linux, but not a lot, is [openSUSE][20]. This is SUSE's community Linux distribution. While it doesn't have the support bells and whistles of SLES, it's stable and easy to use. On a personal note, openSUSE is what I use for my in-house servers.
I cannot, however, recommend RHEL's community little brother [Fedora][21] for servers. Fedora is great for developers who are pushing Linux to its limits, but it's not for someone who wants a stable server.
Another reasonable mid-range choice is Canonical's Ubuntu. While Ubuntu has made its reputation as a desktop distribution with designs on tablets and smartphones, it also has a reasonably good server offering: [Ubuntu Server][22].
Like RHEL and SLES, Ubuntu also has support and certification offerings, but these aren't as deep as Red Hat and SUSE's resources. On the other hand, Ubuntu is easier to use for simple server tasks.
The best Linux server for experts
- Arch
- Gentoo
- Debian
- Fedora
If you're interested in the cloud, Ubuntu (like RHEL) is [deeply integrated with OpenStack][23]. In addition, Canonical, Ubuntu's parent company, offers [Juju][24], a very handy DevOps (Developer/Operations) [set of tools][25], that makes it much easier to set up, configure, manage, maintain, deploy and scale server services.
While were talking cloud, you should also consider whether you actually need general purpose Linux servers running in your office or data center. It's quite possible that you can run the services you need on a dedicated Linux server on the cloud.
Most public cloud services, such as Amazon Web Services (AWS), Azure, and RackSpace, offer Linux servers. With these a lot of the hard work of setting up a server is done for you.
For example, on Amazon Elastic Cloud (AE2), Amazon offers ready-to-run Amazon Machine Images (AMIs) for all the Linux distributions I've mentioned in this story and their own house [Amazon Linux][26] as well. Microsoft's Azure, believe it or not, [supports CentOS, openSUSE, SUSE, and Ubuntu][27]. Finally, RackSpace, an OpenStack champion, [supports most of the major server Linux distributions][28] and two smaller Linuxes, Arch and Gentoo. Although, as with Debian, I recommend that only people who know Linux, and these distributions in particular use these for business-critical servers.
Who says that you need a full-powered Linux server even on the cloud? You might be able to do just fine with a Linux server dedicated to a particular job. This is what [Turnkey Linux][29] brings you.
Turnkey is built on top of 64-bit Debian Linux, but it requires minimal Linux expertise to use. That's because it really provides dedicated Linux server appliances rather than a full-featured distribution.
Turnkey has more than a hundred ready-to-run apps These range from such standards as the Apache Web service, a Linux, MySQL, PHP/Python/Perl (LAMP) stack; a WordPress blogging platform; and a Drupal content management system (CMS) to more exotic servers such as the Ushahidi crisis crowd-sourcing server; Zurmo, a gamified customer-relationship management (CRM) application; and Sahana Eden, a humanitarian response management system. You can run these dedicated application servers on AWS, bare metal, virtual machines (VM), or on Infrastructure as a Service (IaaS) clouds.
In short, whether you know next to nothing about Linux or you're a senior developer on the Linux kernel team, there's a Linux server for you and your business needs. Enjoy!
[1]:http://www.itworld.com/slideshow/119061/ubuntu-impresses-test-linux-servers-372374
[2]:http://www.itworld.com/operating-systems/370104/first-rule-choosing-desktop-linux-distribution-user-know-thyself
[3]:http://blog.smartbear.com/open-source/yes-open-source-jobs-are-hot-and-we-have-stats-to-prove-it/
[4]:http://www.itworld.com/it-managementstrategy/250988/where-are-all-linux-professionals
[5]:http://www.debian.org/
[6]:http://www.redhat.com/products/enterprise-linux/
[7]:http://www.itworld.com/it-managementstrategy/263212/red-hat-joins-billion-dollar-club
[8]:http://www.redhat.com/support/
[9]:http://www.redhat.com/training/certifications/
[10]:http://www.redhat.com/rhel/compatibility/hardware/
[11]:https://access.redhat.com/subscriptions/rhntransition/
[12]:https://www.suse.com/products/server/
[13]:https://www.suse.com/products/expandedsupport/
[14]:http://www.novell.com/training/certinfo/clp/
[15]:https://www.suse.com/partners/ihv/yes/
[16]:https://www.suse.com/products/register.html
[17]:http://www.oracle.com/us/technologies/linux/overview/index.html
[18]:http://www.centos.org/
[19]:http://readwrite.com/2013/08/13/red-hat-ceo-centos-open-source
[20]:http://www.opensuse.org/en/
[21]:http://fedoraproject.org/
[22]:http://www.ubuntu.com/server
[23]:http://www.ubuntu.com/cloud/build-a-cloud
[24]:https://juju.ubuntu.com/
[25]:https://community.csc.com/community/cio-engage/blog/2013/08/25/beyond-chef-and-puppet-ubuntu-juju
[26]:https://aws.amazon.com/marketplace/pp/B00635Y2IW/ref=mkt_ste_ec2_amznlinux
[27]:http://www.windowsazure.com/en-us/manage/linux/other-resources/endorsed-distributions/
[28]:http://www.rackspace.com/knowledge_center/article/choosing-a-linux-distribution
[29]:http://www.turnkeylinux.org/
via: http://www.itworld.com/operating-systems/372236/how-choose-best-linux-server-your-business

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Indicator-Synapse Brings Spotlight-Like Search Bar to Linux
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![img](http://www.omgubuntu.co.uk/wp-content/uploads/2013/06/spotlightsynapse.jpg "spotlightsynapse")
**Take a semantic Zeitgeist-powered application/file launcher and bind it to the panel. What do you get? Something worth putting in the spotlight, thats what.**
_Indicator-Synapse_ is a new attempt at presenting results from the [powerful application/file launcher Synapse][1].
Comparisons with Apples Spotlight search feature are somewhat valid. Both are menu based search tools that show a top hit and results from files, applications and the web.
But you dont need to be running a Mac-themed Linux distro to use it (though Im sure it looks great on Pear OS, where itll be rocking up as default). It runs just fine on Ubuntu and its siblings.
###Unity Dash Does The Same, Right?
The need for such a tool on the Unity desktop is lessened somewhat given the versatility of the Dash, but some of you might like it anyway.
Drawback being that you cant open it with a keyboard shortcut (not least one that I can find). That makes it a little less useful; being able to tap a key combo and start searching without needing to use the mouse is what makes Spotlight on OS X (and the Unity Dash) so handy.
But still, early days.
###Install Indicator Synapse in Ubuntu
Indicator-Search is currently in development so only install it if youre okay with bugs, crashes and unexpected behaviour.
Installing it requires adding two PPAs to your software sources. The first contains builds of Indicator Synapse for Ubuntu 12.04 & 13.04. The second has a dependency needed by the app that isnt present in its own PPA.
Open a new Terminal window and enter:
sudo add-apt-repository ppa:elementary-os/unstable-upstream
sudo add-apt-repository ppa:birdie-team/stable
sudo apt-get update && sudo apt-get install indicator-synapse libkeybinder-3.0-0
Now search for Indicator-Synapse in the Dash and launch.
To remove the application simply search for indicator synapse in the Ubuntu Software Center, click on its listing, then the remove button
[1]:https://apps.ubuntu.com/cat/applications/synapse/
via: http://www.omgubuntu.co.uk/2013/09/spotlight-like-tool-coming-to-pear-os-other-distros

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Is '3 The Latest Member of Canonicals Carrier Advisory Group?
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Mobile Network 3 appears to be the latest addition to Canonicals Carrier Advisory Group.
![img](http://www.omgubuntu.co.uk/wp-content/uploads/2013/09/3-logo1.jpg)
The companys logo appears on the CAG section of the official Ubuntu website.
But, this appearance aside, official confirmation of CAG membership by either 3 or Canonical has yet to be made.
###About 3
Three is far from being the biggest mobile network in the UK, where it has picked up nearly 9 million customers since launching as the nations first 3G service back in 2003.
But worldwide the network has a more notable presence, with the [Hutchison Whampoa][1]-owned company operating in several other countries, including Ireland, Austria, and Hong Kong.
###About the CAG
The CAG allows mobile networks interested in Ubuntu Touch for mobiles the chance to preview, discuss and influence development.
Membership of the CAG is not the same as committing to offer devices. That said, members do get confidential information on handsets, release dates and other launch information to help persuade them to do so.
If the addition of 3 is confirmed then it will be joining [a 13-strong list of carriers who have shown interest][2] in the fledgling upstart OS.
[1]:http://en.wikipedia.org/wiki/Hutchison_Whampoa
[2]:http://www.omgubuntu.co.uk/tag/cag
via: http://www.omgubuntu.co.uk/2013/09/mobile-network-3-joins-ubuntu-carrier-advisory-group

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Is Linux the best operating system?
===================================
Today in Open Source: Is Linux the best operating system? Plus: GOG.com won't support Linux, and a screenshot tour of Ubuntu Studio 13.01 Beta
UVU Review has an article touting Linux as the best operating system. The article covers the following categories:
- Price
- Availability
- Maintenance and Repair
- Software and Updates
> With all due respect, my colleagues are wrong. Linux is hand-down the best option for computing. It isnt even a competition. Neal Stephenson said: “Macs are hermetically-sealed sedans that look great and have a lot of advertsing. Windows machines are big SUVs that break often, but theyre everywhere and everyone knows how to use them. Linux computers are free tanks that go 90 mph in swamps, get 100 mpg and never break down.”
> Ive been using Linux for years now and dont ever plan on switching. We cant explore all the reasons for its superiority, but here are my main points. Im assuming you know what an operating system is and that Macintosh, Windows and Linux are all different options.
> [More at UVU Review][1]
He makes a strong case for Linux, and while I mostly agree with the article's take, I'm still very hesitant to declare a "best" operating system. Why? The choice of an operating system depends so much on the individual user's needs. This can vary quite a bit depending on the person.
Linux may very well meet all of those needs and then some. Then again, maybe not. It's so hard to generalize about this sort of thing without delving into who the individual is and what his or her computing needs might be on a daily basis.
In some cases, a user might not even need a full-blown desktop computer in the first place. Mobile devices have taken over quite a bit, so a user could get by with a mobile solution for email, web browsing, and the various other functions that used to be performed solely by desktop computers.
This of course means that they could be using Linux (Android, Firefox OS, Ubuntu), but they might also opt for iOS or some other mobile operating system. There's a range of non-linux choices available in mobile devices, so it's quite possible that Linux wouldn't be used or missed by a user.
Getting back to the desktop, Linux clearly has a tremendous amount to offer, and I always recommend that people give it a shot in a virtual machine to get their feet wet. But I'm also realistic enough to understand that it might not work for everybody. OS X or Windows might fit the bill better, depending on the user's needs.
When you get right down to it, it's very hard to even define what the "best" operating system is for computers. Whatever definition you choose may not work for other people. But Linux is certainly well worth trying, if you do you may just find yourself becoming a Linux convert.
**No Linux Game Support from Good Old Games**
Some slightly bad news for Linux gamers.
[1]:http://www.uvureview.com/2013/09/07/linux-is-clearly-the-superior-operating-system/
via: http://www.itworld.com/operating-systems/372109/linux-best-operating-system

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Linux “HoT” bank Trojan: Failed malware
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Summary: What? Another Linux vulnerability? Nope. Other operating systems may be easy malware marks, but Linux continues to resist malware.
By Steven J. Vaughan-Nichols
Initially it looked like the ["Hand of Thief" (HoT) Trojan would be the first successful Linux Trojan][1]. However, further investigation by RSA, the Security Division of EMC, reveals that the Hand of Thief is just another in a long line of so-called Linux malware that's more bark than bite.
![img](http://cdn-static.zdnet.com/i/r/story/70/00/020436/hot-620x92.png?hash=BQp2AJH5BT&upscale=1)
Hand of Thief: Another failed Linux malware program. (Credit: RSA)
Indeed, the only people who will be hurt by this so-called Trojan are the cyber-criminals who paid $2,000 for this half-baked hack.
Yotam Gottesman, an RSA Senior Security Researcher, reported that the company obtained the HoT code builder and created HoT binaries. Gottesman reports that [HoT has no real functionality][2]. "Our research and analysis shows that, in reality, HoTs grabbing abilities are very limited if not absent, which would make the malware a prototype that needs a lot more work before it can be considered a commercially viable banking Trojan."
My own experiences with HoT demonstrated that while I smelled smoke, there was no fire. It is just a harmless exploit of a since-patched problem with the Chrome Web browser.
HoT's builder--the part that actually creates the virus--is a Windows program. In theory the builder would enable the botmaster to generate new variants of HoT. It created 32-bit compiled [ELF (Executable and Linking Format)][3] programs. ELF is the standard Linux binary format.
Once installed, HoT would seek to grab information from Web forms and send the results to a botnet server. As malware, however, HoT fails in the most fundamental way possible: It requires a deliberate effort by the user to install it.
On some operating systems, such as Windows, it's relatively easy to infect a system without the user being aware that anything is happening. On others, such as [Android, the user must agree to install a program][4]. With Linux, you must go out of your way to install any program. HoT has no mechanism to make that any easier for a criminal cracker.
In fact, even if you do take the time and effort to infect a Linux PC with HoT, the program still doesn't work worth a damn. RSA found that HoT often crashed with Firefox on [Fedora][5], grabbed useless data with Chrome on Fedora, and was blocked from running at all on [Ubuntu Linux][6].
Therefore, RSA concluded, "HoT has come to the cybercrime underground at a time when commercial Trojans are high in demand, stirring some excitement amongst criminals. Although it initially appeared to be a compelling new Trojan entrant, RSAs in-depth analysis of the code proves it is a prototype more than true commercially viable malware, crashing the browsers on the infected machines and displaying overall inability to properly grab data."
As for that critical issue of infecting Linux systems, "HoT's developer claims that he is in the final stages of implementing a Web-injections mechanism, but since the Form grabber he designed is not functional on the browsers he claims to have tested, the injections are not very likely to work either."
I'll take that a step farther. The only people who have, or ever will have, trouble with HoT are the would-be crooks who bought this hopelessly maimed malware.
About Steven J. Vaughan-Nichols
Steven J. Vaughan-Nichols, aka sjvn, has been writing about technology and the business of technology since CP/M-80 was the cutting edge PC operating system. SJVN covers networking, Linux, open source, and operating systems.
[1]:http://www.zdnet.com/linux-desktop-trojan-hand-of-thief-steals-in-7000019175/
[2]:https://blogs.rsa.com/rsa-peeks-into-the-bits-of-new-linux-based-trojan-hand-of-thief/
[3]:http://www.thegeekstuff.com/2012/07/elf-object-file-format/
[4]:http://www.zdnet.com/five-simple-ways-to-avoid-android-malware-7000017463
[5]:http://fedoraproject.org/
[6]:http://www.ubuntu.com/
via: http://www.zdnet.com/linux-hot-bank-trojan-failed-malware-7000020436/

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MintBox 2 now available for order for $599 (Mini-PC with Linux Mint)
====================================================================
Compulab is now taking orders for the MintBox 2, a tiny, fanless desktop PC with an Intel Ivy Bridge processor, 4GB of RAM, and a 500GB hard drive. Its also one of the few computers to come with [Linux Mint][1] pre-loaded.
You can [order the MintBox 2 from the Compulab website][2] for $599. It should be in stock at Amazon by the end of September, and its expected to hit Europe in October.
![img](http://cdn.liliputing.com/wp-content/uploads/2013/09/mintbox2_0.jpg "Mintbox 2")
The Mintbox 2 measures 7.5″ x 6.3″ x 1.6″ and , weighs 2.5 pounds.
Full specs include:
- Linux Mint 15 “Olivia”
- Intel Core i5-3337U Ivy Bridge processor with 17W TDP
- Intel HD 4000 graphics
- 4GB of RAM (upgradable to up to 16GB)
- 500GB 2.5″ hard drive (which you can also upgrade)
- mSATA socket
- 2 eSATA ports
- HDMI 1.4a + DisplayPort 1.1a
- S/PDIF 7.1 channel audio
- 2 Ethernet jacks
- 802.11b/g/n WiFi
- Bluetooth 4.0
- 2 USB 3.0 ports
- 6 USB 2.0 ports
- RS232 serial port (UART)
- Mini PCIe slot (shared with mSATA) and half-sized mini PCIe slot (used for the WiFi card)
The computer comes with a 5 year warranty, although the hard drive is only guaranteed for 2 years.
While the MintBox 2 has a much faster processor than than the original MintBox, which featured an AMD G-series processor, you can still [order the MintBox Pro (2012) model][2] for $439. That price gets you a model with an AMD G-T56N processor, 8GB of RAM and a 250GB hard drive.
Compulab also offers a range of mini PCs under the Fit PC brand [for $275 and up at Amazon][3]. What really makes the MintBox special is that its sold in partnership with the developers of Linux Mint, and its guaranteed not only to support Linux Mint 15, but future releases as well.
Five percent of revenue from sales goes to support the Linux Mint project.
[1]:http://linuxmint.com/
[2]:http://fit-pc.com/web/purchasing/order-mintbox/
[3]:http://www.amazon.com/s/?_encoding=UTF8&camp=1789&creative=390957&field-brandtextbin=fit-PC3&linkCode=ur2&node=172282&tag=bradlindsdigi-20
via: http://liliputing.com/2013/09/mintbox-2-now-available-for-order-for-599-mini-pc-with-linux-mint.html

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Nautilus-Open-Terminal : Nautilus Plugin To Open Terminal From Anywhere
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Does your work involve hopping between GUI and command line? Do you get frustrated while typing your way into the directories on command line? Well, if that is the case, you must try nautilus plug-in **nautilus-open-terminal**.
##Nautilus-Open-Terminal
Nautilus-Open-Terminal is a nautilus plug-in that lets you open a terminal from anywhere. This is especially helpful in a case when you are inside a directory that contains subdirectories and you want to do a command line operation inside a particular subdirectory. For this case, if you have this plug-in installed, all you need to do is to right-click on that particular subdirectory and click on the option **Open in Terminal**.
Here is an example:
![img](http://mylinuxbook.com/wp-content/uploads/2013/09/open-terminal-main.png "open-terminal-main")
Now, once you click on **Open in Terminal** option, a terminal will open up with the directory you just right clicked as the current working directory.
![img](http://mylinuxbook.com/wp-content/uploads/2013/09/open-terminal-1.png "open-terminal-1")
So you can see that how easy is it for you to jump from GUI to command line using this plugin.
###Download/Install
Here are some of the important links related to this plugin :
- [Plug-in information on launchpad][1]
- [Plug-in information on Ubuntu Packages][2]
I first tried to download and install this package through Ubuntu Software Centre but got an error saying that some of the dependencies are missing on my system. I then tried through command line but got the same error. Then I used the command sudo apt-get -f install to fulfil the missing dependencies and then used Ubuntu Software Centre to download and install the plug-in.
**Pros**
Well, its a small package that can save a lot of your time while hopping between command line and GUI.
**Cons**
Had to resolve the dependency errors before downloading and installing the plug-in
**Conclusion**
I would recommend this plug-in to everyone as there are all positives of having it. You will feel the difference once you get used to it.
[1]:https://launchpad.net/ubuntu/+source/nautilus-open-terminal
[2]:http://packages.ubuntu.com/lucid/nautilus-open-terminal
via: http://mylinuxbook.com/nautilus-open-terminal-nautilus-plugin-to-open-terminal-from-anywhere/

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New OpenSUSE Raspberry Pi Image
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Hello guys! I want some attention, all openSUSE fans should read this very important article. Do you have a Raspberry Pi? Do you like to test openSUSE? Are you crazy about Raspberry Pi and openSUSE? Do you want to see them together? Thats great because the ARM edition of the openSUSE Linux operating system has new ARMv6-based images for the Raspberry Pi platform. This new image of openSUSE comes with kernel-3.6, minimal X11/icewm and is only 82MB compressed.
Dont thank me for this, thank Bernhard Wiedeman. The cool thing about this image of openSUSE is that he created it using an alternative image building automatism from scratch. And, do you know the funny part of it? Bernhard Wiedeman created in three hours in the morning. Great and very skilled guy!
If you are interested in the automation script written by Bernhard for the purpose of creating the new armv6 based image for the Raspberry Pi, you can find it [here][1]. This script gives everyone the chance to now easily build his own images and share them with the rest of openSUSE geeks all over the world. Bernhard Wiedeman writes for us in his blog that this script an build an image from scatch in three minutes. Yes three minutes, and everything works in the perfect possible way. Bernhard Widemans Raspberry Pi booted successfully with it within 55 seconds. What about your Pi? How much time did it take to boot? Can you share with us in the comment section? We will be very happy to hear from other user experiences.
Of course, nothing is perfect so there are remaining open issues with this automatism process. These remaining issues are listed below.
- the repo key is initially untrusted
- build scripts have no error handling
What are some advantages of this new iso image compared the old image?
- It is easier to resize because the root partition is the last one
- Compressed image is much smaller
- Reproducible image build, so easy to customize
- It is armv6 with floating point support, so could be faster
- We have over 5200 successfully built packages from openSUSE:Factory:ARM
- so for example you can install a minimalistic graphical environment with zypper install xauth twm xorg-x11-server xinit and start it with startx
Ok guys, not it is time for some PiSUSE fun, i mean go and try openSUSE on your Raspberry Pi and dont drink much beer. Happy openSUSE party guys!
Source: [openSUSE Lizards][2]
[1]:https://build.opensuse.org/package/show/devel:ARM:Factory:Contrib:RaspberryPi/altimagebuild
[2]:https://lizards.opensuse.org/2013/09/07/new-raspberry-pi-image/
via: http://www.unixmen.com/new-opensuse-raspberry-pi-image/

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Ranger A Text Based File Manager For Command Line Users
=========================================================
Graphical file managers are an integral part of everybodys day-to-day computer work. Most of the users are happy using the default file manager and arent much bothered about exploring alternative file managers. But, when it comes to CLI file managers, users may well be interested in trying various available file managers before settling down with the best — that suits their needs. In this article, we will discuss/review Ranger a command line based file manager.
![img](http://mylinuxbook.com/wp-content/uploads/2013/09/ranger-main.png "ranger-main")
NOTE All the examples and instructions presented in this article are tested on Ubuntu 13.04.
##Ranger The Command Line File Manager
Ranger is an ncurses based command line file manager that has a simple and minimalistic user interface. It uses basic vi key bindings for navigation and is capable of previewing files and opening them with default programs.
###How To Use It
Just type the command ranger on command line to execute this utility. Here is a snapshot of ranger when executed on my system from the directory /home/himanshu.
![img](http://mylinuxbook.com/wp-content/uploads/2013/09/ranger-1.png "ranger-1")
You can see that ranger displays directories, sub-directories and their contents in separate columns. For example, the left most column in the window shown above represents the three directories present in the /home directory of my system. Out of these three, the himanshu directory is currently selected.
The second column represents the subdirectories of the himanshu directory. Out of these, the subdirectory Pictures is currently selected. Similarly, the third column represents all the files present in the Pictures directory.
NOTE You can use the left/right arrow keys to select a specific column and then use up/down arrow keys to navigate within that column.
Ranger uses default programs to display different types of files. For example, when I navigated to the third column shown the earlier screen-shot and pressed enter after selecting the file workspace_switcher.png, here is what showed up :
![img](http://mylinuxbook.com/wp-content/uploads/2013/09/ranger-2.png "ranger-2")
So you can see that ranger opened the file in an image viewer. Another feature of this file manager is that the files can be previewed within the file manager as soon as they are selected.
Here is an example screen-shot :
![img](http://mylinuxbook.com/wp-content/uploads/2013/09/ranger-3.png "ranger-3")
So you can see that as soon as the file CMS was selected, a preview of its contents was displayed on right hand side of the window. If it is desired to read the complete file, just hit the right arrow and the file will be opened in vi/vim editor. Quit the vi/vim editor using :q to come back to file manager.
NOTE Preview of Images requires some dependencies to be fulfilled. For more information on this, read the Dependencies section [here][1].
Here are some tips regarding the usage of ranger :
- Select a file, press y to copy it and then navigate into the destination folder and then press p to paste.
- Type **:delete** to delete the currently selected file.
- Use ? to open the man page of ranger from within the file manager and press q to come back to the file manager.
- Being ncurses based, the up-down scroll can be easily done through mouse.
###Download/Install
Here are some important links related to ranger file manager :
- [Home Page][2]
- [Download][3]
I downloaded and installed this utility through command line through apt-get. Ubuntu users can also use Ubuntu Software Centre to download and install this utility. The version used for this review was 1.5.4-1.
Download and installation completed smoothly without any problems.
**Pros**
- Easy navigation
- Minimalistic UI
- Control using vi/vim style commands
**Cons**
- Good only for basic file management operations
- Preview features requires dependencies to be fulfilled
**Conclusion**
Ranger is a fine utility that does what is promises to do. I would recommend this utility to those users who work on servers (containing no GUI). If you spend a lot of time on command line and are looking for a good command line file manager, Ranger could be a good option.. If your expectations arent too high, ranger should not disappoint you.
[1]:http://ranger.nongnu.org/
[2]:http://ranger.nongnu.org/index.html
[3]:http://ranger.nongnu.org/download.html
via: http://mylinuxbook.com/ranger-command-line-file-manager/

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Torvalds Dead SSD Delays 3.12 Linux Kernel
===========================================
Earlier this week, development of the [Linux 3.12 kernel][1] suffered a setback after an SSD drive in the workstation of chief architect Linus Torvalds suddenly failed.
In a message entitled RIP dead harddisk, the creator of the open source OS asked the contributors to re-send patches and pull requests that had not yet been integrated into the kernel Git repository.
Torvalds works on the kernel full-time, and retains the highest authority to decide which new code is incorporated into it.
###Solid State Delay
“The timing absolutely sucks, but it looks like the SSD in my main workstation just died on me,” [wrote Torvalds][2], just days before the end of the two-week merge window.
![img](http://www.techweekeurope.co.uk/wp-content/uploads/2013/09/seagate_ssd_3.jpg)
seagate_ssd_3
“Ill try to see if I can recover the disk, but right now my machine refuses to even see the boot sector on it, and tries to boot from the network instead. So Im not all that hopeful.”
The developer said he didnt lose a lot of work, and asked the community to check if their requests have been posted in the current tree on [git.kernel.org][3].
“If worst comes to worst, Ill just do the last next days of the merge window on the laptop that I was planning on finishing it off with anyway, since I have travel coming up,” Torvalds assured his colleagues.
The Linux kernel 3.12 is still in early stages of development, and due to go through proper testing. Some of the changes include improved power management, new KVM virtualisation features, better sound drivers, new features for EXT4 file-system and F2FS file-system.
via: http://www.techweekeurope.co.uk/news/torvalds-dead-ssd-delays-3-12-linux-kernel-126895
[1]:http://www.techweekeurope.co.uk/comment/linux-kernel-greg-kroah-hartman-124957
[2]:http://lkml.indiana.edu/hypermail/linux/kernel/1309.1/01669.html
[3]:https://git.kernel.org/cgit/

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Wireless Aside, Cr OS Linux Delivers the Best of Two Worlds
===========================================================
**It is easy to be misled about exactly what Cr OS is. This open source OS project first debuted in 2009 as Chrome OS Linux. Last September its developers changed the name to Cr OS Linux. Even with a recent name change for this distro, it can be mistaken for other Linux OS projects that resemble Google's Chrome OS. Think Chromebook here.**
The [Cr OS Linux][1] distribution is an interesting blend of the Cinnamon desktop with a special edition of the Chromium Web browser.
The approach Cr OS Linux (pronounced "Cros Linux") takes gives you a taste of Linux Mint with a chaser of a not-quick pure Google Chrome OS.
Cr OS is a fully functional Linux distro. It has its own repository and package manager to provide software updates.
I was generally pleased with Cr OS. Its lightweight design does not have many of the advanced features that tend to bog down Linux Mint, but the Cinnamon desktop definitely provides a Minty look and feel.
![img](http://www.linuxinsider.com/images/article_images/78918_620x200.jpg "Cr OS Linux workspaces.")
Cr OS Linux uses GNOME scaling effects to depict workspaces.
The only serious impediment is its high rate of incompatibility with wireless hardware. If all you need is a solid Linux OS for your desktop computer, Cr OS could be an ideal choice. If you also want to use it on laptops, however, chances are it will not connect to your wireless card.
###WiFi Woes
I loaded the live DVD onto three different laptops I use regularly. Each one was built by a different but well-known laptop maker.
All connected to the Internet via cable just fine. None made the wireless connection. Cr OS failed to spot the wireless card.
This is a recurring problem with one of my laptops, but I can almost always get a wireless connection from at least one of the other two.
###No Chrome OS Clone
It is easy to be misled about exactly what Cr OS is. This open source OS project first debuted in 2009 as Chrome OS Linux. Last September its developers changed the name to Cr OS Linux.
Even with a recent name change for this distro, it can be mistaken for other Linux OS projects that resemble Google's Chrome OS. Think Chromebook here.
The developer's intent was to build a free Linux Live CD distribution around the revolutionary Google Chrome (Chromium) Web browser and based on the openSUSE operating system. That is what Cr OS Linux is.
Unlike the Chrome OS Project, however, Cr OS is more than just a browser-based OS.
###First Impressions
Cr OS is a Linux distro that gives you the best of two worlds. The combination of a traditional Linux desktop based on Cinnamon with a tweaked Chromium Web browser is awesome.
Cr OS installs with the InSync beta 10 client for Google Drive. This essentially turns the generic Chromium Web browser that is the basis of Google Chrome into the Chrome browser.
I can log into my Google account and have Chromium sync all of the Google apps so I get the appearance of actually running the Google Chrome browser. Even the Chrome store is connected to the Google Store in the browser.
So, if you use the Google Chrome browser and like the Cinnamon desktop, the Cr OS is very satisfying indeed.
###Software Galore
Cr OS has an impressive installed software base. This makes it much more flexible than Google Chrome OS, with all the limitations it imposes.
You can use your standard Linux apps and supplement the software with your favorite Google apps online via the Chromium browser linked to your Google account.
Cr OS does not install the latest versions of every application, but at least I did not have to add the key programs I expect to find in a Linux distro. Among the apps provided are the Banshee 2.4 media player, Shotwell 0.12 photo manager, GIMP 2.8 image editor, LibreOffice 3.5 office suite, Wine 1.5 Windows emulator, Cheese 3.4 webcam app and the Pidgin 2.10 instant messenger.
###Under the Hood
Cr OS is no slouch in the engine department, either. It has a Dashboard with social toolbar and a very functional Control Center.
Powering this distro release is Linux kernel 3.6.5 and the Cinnamon 1.6.6 desktop environment. The Chromium 24.0.1290 Web browser is the stock offering.
###Getting It
The download process for Cr OS is horrible. You can choose to pay for a Gold membership account for really fast download speed, or you can choose the regular download option for free, go through a 60-second wait with gotcha verification and then a very slow (353 minutes) download.
The download service is provided by depositfiles.com. The Cr OS website has almost no information about the community or company providing the software. The site gives you the option to go to its Google+ page, but until you agree to add them to your Circles, you get no information from there either.
You can also choose to download the live DVD version or the install-to-USB-drive portable version. The live download is 826 MB. The USB download is a 976 MB tar.gz file (3.9 GB unpacked).
###A Better Source
An alternative is [here][2] at the [SuSE][3] Studio affiliate website. You still need to set up an account, however, unless you have Google or other affiliated log-ins.
The download speeds are not throttled back here, however, so the complete download is much quicker. The download speed still depends on your service provider and other factors, but no USB installation download was available.
Either way, you may still sense some branding confusion. Cr OS Linux is not affiliated with Google Chrome, other than the tie-in with the Insync integration.
The splash screen sports the Google red, green and yellow colored circle. The two-tone blue Chromium icon sits on the desktop panel, however.
###Bottom Line
If the wireless connectivity issue does not affect you, Cr OS is a solid Linux distro. It offers an uncluttered Cinnamon desktop environment with a tweaked-out version of the Chromium Web browser.
Cr OS is not as mainstream as other Linux distros, but its unique approach may be just what you need to enjoy a more pure Linux experience.
###Want to Suggest a Linux Application for Review?
Is there a Linux software application you'd like to suggest for review? Something you love or would like to get to know?
Please send your ideas to me at jack.germain@newsroom.ectnews.com, and I'll consider them for a future Linux Picks and Pans column.
And use the Talkback feature below to add your comments!
[1]:http://getchrome.eu/
[2]:https://susestudio.com/a/jMOVxa/cr-os-linux
[3]:http://www.novell.com/linux
via: http://www.linuxinsider.com/story/Wireless-Aside-Cr-OS-Linux-Delivers-the-Best-of-Two-Worlds-78918.html

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openSUSE ARM Gets new Raspberry Pi Images
=========================================
Over the weekend, Bernhard Wiedemann has been working on new armv6 based images for the Raspberry Pi. It is built using a set of alternative build scripts aiming to make the building of the image easier. Hes put the scripts as well as an image online, you can get it from oSC or [here (image)][1] and [here (scripts)][2]. If youre playing around with Raspberry Pi and want to create images for your device(s), this is for you!
###The Image and Building It
As Bernhard [explains on his blog][3], the image he created is only 82mb compressed, so it is pretty minimalistic. The image also contains the scripts he created for building under /home/abuild/rpmbuild/SOURCES/.
![img](https://news.opensuse.org/wp-content/uploads/2013/09/IMG_20130907_133512-300x225.jpg)
Sadly, the sticker doesnt fit…
If youre interested in playing with the building itself, creating custom images, the following commands will get you going:
osc co devel:ARM:Factory:Contrib:RaspberryPi altimagebuild
cd devel:ARM:Factory:Contrib:RaspberryPi/altimagebuild
bash -x main.sh
He notes: _ If you have 6GB RAM, you can speed things up with export OSC_BUILD_ROOT=/dev/shm/arm before you do. _
This package doesnt build in OBS or with just the osc command as it requires root permissions for some steps. That is why you have to run it by hand and let it do its magic. The under-250-lines of script will go through the following steps:
1.First, osc build is used to pull in required packages and setup the armv6 rootfs.
2.Second, mkrootfs.sh modifies a copy of the rootfs under .root to contain all required configs
3.And finally, mkimage.sh takes the .root dir and creates a .img from it that can be booted
Bernhard claims that: “this can build an image from scatch in three minutes. And my Raspberry Pi booted successfully with it within 55 seconds.”
###Todo and Open Issues
He also points out some remaining open issues:
- the repo key is initially untrusted
- still uses old 3.1 kernel
- build scripts have no error handling
Compared to the old image, this one has some advantages:
- It is easier to resize as the root partition is the last one
- Compressed image is much smaller
- Reproducible image build, so easy to customize
- It is armv6 with floating point support, so could be faster
- We have 5200 successfully built packages from [openSUSE:Factory:ARM][4]
If you wanted to play with building images for the Raspberry Pi, this might well be the easiest way doing so! And as always, merge requests are very much welcome.
[1]:http://www.zq1.de/~bernhard/linux/opensuse/raspberrypi-opensuse-20130907.img.xz
[2]:https://build.opensuse.org/package/show/devel:ARM:Factory:Contrib:RaspberryPi/altimagebuild
[3]:https://lizards.opensuse.org/2013/09/07/new-raspberry-pi-image/
[4]:http://download.opensuse.org/ports/armv6hl/factory/repo/oss/
via: https://news.opensuse.org/2013/09/09/opensuse-arm-gets-new-raspberry-pi-images/