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Canonical's Ubuntu 14.04 focuses on the long haul
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> The server edition of Ubuntu 14.04 comes with Docker and better support for solid-state disks
IDG News Service - As organizations move in-house systems to the cloud, Canonical wants them to consider switching their OSes as well.
"When people move to cloud, it very often involves re-architecting an application," said Mark Baker, Canonical Ubuntu Server product manager. "Enterprises are evolving to want to take advantage of scale-out and cloud technology."
Due to factors such as the emergence of cloud services, about 70 percent of CIOs plan to revaluate their choices in IT vendors within the next few years, [according to a Gartner survey][1]. "We are seeing evidence of that," Baker said.
With Thursday's release of the server edition of its Linux distribution, Ubuntu 14.04, Canonical will emphasize how it can be used for organizations as the base for running large mission-critical applications in hosted environments. The release comes with long-term support and many cloud-friendly software programs, such as Docker and the latest edition of OpenStack.
> "We are now much more conscious of the fact that we are creating a platform that is being adopted by enterprises," Baker said.
>
> Ubuntu 14.04 is a long-term support (LTS) release, meaning it will come with five years of patching and support, making it more viable for enterprise and long-term production usage. It will also allow users to update software packages from Ubuntu's own repository system for this time as well.
>
> Canonical releases a new version of Ubuntu twice a year, though LTS releases only come every two years. The other non-LTS releases are only supported for nine months.
>
> With regular non-LTS releases, users will no longer get bug fixes and they cannot update software or the OS itself through Canonical after nine months. This gives users only about three months to update the OS, should they choose to do so.
>
> Long-term support comes at a good time, given the increasing severity of bugs being found in the infrastructure software, such as the severe OpenSSL Heartbleed bug [that rendered countless Web applications vulnerable to attack][2].
Also last week, Microsoft discontinued support for its Windows XP OS, potentially leaving millions of users [open to attack][3].
About 70 percent of those using the server edition of Ubuntu use the LTS versions of the OS, Baker noted.
Organizations "don't want to be pushed to upgrade until a time that suits them. Five years is a long time. It gives them a lot of runway to work out the right migration path," Baker said.
Baker admitted that the new release is relatively light on new packages and features, mainly due to Canonical's work on getting the software ready for long-term usage.
The company has done a lot of interoperability work with other hardware and software vendors, such as Advanced Micro Devices, Cisco and cloud providers such as Amazon, Joyent, Hewlett-Packard and others.
The package includes the latest version of the OpenStack cloud-hosting software, called Icehouse, [due to be released Thursday][4].
This is notable in that OpenStack itself will only support each release through the next two releases, [a duration that has been until now about 18 months][5].
Ubuntu 14.04 is also the first to include Docker,[a Linux container technology that provides a lighter-weight alternative to running full virtual machines][6].
This is also the first edition to include XFS, a high performance 64-bit journaling file system first developed by SGI (Silicon Graphics). Canonical competitor Red Hat [plans to use XFS][7] as the default file system for the next edition of its Red Hat Enterprise Linux (RHEL) distribution.
Red Hat also includes Docker and OpenStack in RHEL.
Canonical has also equipped Ubuntu to work more effectively with solid-state disks (SSDs). Ubuntu 14.04 comes with Linux kernel version 3.13, [released in January][8]. Linux 3.13 includes a new technology called Multi-Queue Block Layer, which improves read-write performance on SSD disks [by spreading the work across multiple cores][9].
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via: http://www.computerworld.com/s/article/9247694/Canonical_39_s_Ubuntu_14.04_focuses_on_the_long_haul?taxonomyId=122
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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
[1]:http://www.gartner.com/newsroom/id/2685515
[2]:http://www.computerworld.com/s/article/9247671/Server_makers_rush_their_Heartbleed_patches
[3]:http://www.computerworld.com/s/article/9247525/Microsoft_Patch_Tuesday_bids_adieu_to_Windows_XP
[4]:https://wiki.openstack.org/wiki/Icehouse_Release_Schedule
[5]:https://wiki.openstack.org/wiki/Releases
[6]:http://www.infoworld.com/d/virtualization/docker-challenges-virtualization-market-containers-235897
[7]:http://www.infoworld.com/t/linux/red-hat-enterprise-linux-7-beta-now-available-232520
[8]:http://kernelnewbies.org/Linux_3.13
[9]:http://www.phoronix.com/scan.php?page=news_item&px=MTUwNDc

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How to take full length screenshots of websites via terminal
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![](http://180016988.r.cdn77.net/wp-content/uploads/2014/04/Screenshot-790x526.png)
This is a guest post, written by **Tsamis Konstantinos**. He is an avid user of Linux and Open Source, and also a regular visitor of Unixmen. You can contact him via email: **tsamis73@gmail.com**
Taking screenshots is something we all do to remember things instead of notes and for sending things we saw to others. But usually, if not always the webpage we’re taking screenshots of doesn’t fit into our screen and so we need to take multiple screenshots to capture all of it.
For Linux there is a GNOME application that can take any url you give it and return a full length screenshot of it. The application is called **gnome-web-photo** and in this article you can see how to install it and use it.
To install gnome-web-photo on Ubuntu or Debian you type:
$ sudo apt-get install gnome-web-photo
If you are using Fedora:
$ sudo yum install gnome-web-photo
If you are using CentOS or RedHat user, be aware that `gnome-web-photo` depends on GTK+ 3.0. This means that `gnome-web-photo` is not compatible with GNOME 2, which is shipped with CentOS/RHEL 6.
To actually take a screenshot of a web page:
$ gnome-web-photo -t 0 --mode=photo http://www.unixmen.com output.png
The above command will take the full length screenshot of the Unixmen website, and save it in the current directory.
Sample output:
![](http://180016988.r.cdn77.net/wp-content/uploads/2014/04/output2.png)
The **-t** parameter specifies the timeout value (in seconds) for screenshot generation. **-t 0** means that timeout is disabled.
**With** gnome-web-photo, you can also generate a small thumbnail of a webpage like this: Optionally, you can specify thumbnail size by using “**-s**” option. The default thumbnail size is **256×256**.
$ gnome-web-photo -t 0 -s 128 --mode=thumbnail http://www.unixmen.com output.png
Sample output:
![](http://180016988.r.cdn77.net/wp-content/uploads/2014/04/output.png)
If you want to save a screenshot of a website as a multi-page PDF, so that you can print it out later, you can type:
$ gnome-web-photo -t 0 --mode=print http://www.unixmen.com output.pdf
Note that the application doesn’t support the **.jpg** format.
This application is quite useful for all sort of uses. Thumbnails and full length screenshots are useful to me and hopefully to you, too.
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via: http://www.unixmen.com/take-full-length-screenshots-websites-via-terminal/
译者：[译者ID](https://github.com/译者ID) 校对：[校对者ID](https://github.com/校对者ID)
本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出