May 23, 2013

Ubuntu builder 2.4.0 released and installation instructions included


A handy tool to build an Ubuntu based GNU/Linux distribution.Ubuntu Builder is a simple tool to create your own distribution. It allows to download, extract, customize in many ways and rebuild the ubuntu images. You can customize i386 and amd64 desktop ISO images.






What is new in version 2.4.0

Here is the day. The new v2.4.0 has been released! This version brings the support for Ubuntu Raring Ringtail 13.04 and drops the ones for Lucid Lynx and Oneiric Ocelot. Various bug fixed and a new translation added.
Unfortunately, the Ubuntu Mini Remix project has not yet released the new 13.04 images, so they won't be available for the download. When these images will be ready, a new version of the program will come out.

Install ubuntu builder 2.4.0 in ubuntu 13.04/12.10/12.04
Open the terminal and run the following commands
sudo add-apt-repository ppa:f-muriana/ubuntu-builder
sudo apt-get update
sudo apt-get install ubuntu-builder

 Source: http://www.ubuntugeek.com/ubuntu-builder-2-4-0-released-and-installation-instructions-included.html

May 12, 2013

Excellent Hotot Twitter Client

HOTOT TWITTER CLIENT

Posted by iheartubuntu on Thursday, April 04, 2013

Hotot is a desktop client for Twitter (and Identica) and is open source and multi-platform. Run it on Ubuntu linux, Windows, Mac and Chrome. If you are getting tired of having 30+ tabs open in your web browser for various web based apps, something like Hotot might be just the app you're looking for.

We've done a few other Twitter client reviews in the past, but new ones come around which really trump the older ones. For example Hotot is much lighter than Gwibber. Hotot also has a nicer GUI (although thats opinion, but it is very nice). And who doesnt like the fact you can have multiple Twitter accounts stored in Hotot? Ive got my blog account, my personal account & my business account.

While our example above only shows one column, you do have the ability to stretch Hotot and view 2 or 3 columns at once. There are a ton of other features too. Four themes are available including "New Hope", "Classic", "Iron Heart" and "Bare". The default is "New Hope", which you see above. You can also build your own themes.

OK, I wont bore you. lets get right down to it...

  • multi platform
  • nice GUI
  • four themes
  • real time updating
  • multi columns
  • notifications
  • image service integration
  • threaded conversations
  • preview images & videos
  • extension support
There is even an indicator applet with all of the basics...


To install the newest version of Hotot on your system, input this command into a terminal...

sudo add-apt-repository ppa:hotot-team; sudo apt-get update; sudo apt-get install hotot

This should add the repository, update the rep list and install Hotot on your system.

Source: http://www.iheartubuntu.com/2013/04/hotot-twitter-client.html

May 11, 2013

Ubuntu Gnome 13.04 - May Desktop

I've been a fan of the Ubuntu Gnome distro for a while and was anxious to try the latest version 13.04. No surprises here with performance using just 200MB memory. Everything works well. They made a change to Nautilus File Manager, which looks more streamlined. I installed Thunar File Manager as an alternative. Theme used is Greybird from the Shimmer Project. Two new additions to my standard builds are the Epiphany web browser which is very clean looking and fast, and the Noise Music Player which has replaced Audacious. I installed Synaptic and the Gnome Fallback package to get me back the traditional Gnome Classic desktop. There are updated packages for LibreOffice and Gnome 3.8, and others. Also tried the Cinnamon desktop which is a very functional alternative to Gnome and Unity. Below is a link where to download Ubuntu Gnome 13.04 as previously listed, and a review. Enjoy.





































You can get Ubuntu Gnome 13.04 here:
http://cdimage.ubuntu.com/ubuntu-gnome/releases/13.04/release/



Ubuntu 13.04 "Raring Ringtail" GNOME Review: Upgradable to GNOME 3.8 and performs reasonably well!

Ubuntu GNOME (formerly Ubuntu GNOME Remix) is right now an official flavor of Ubuntu and their first official release came with Ubuntu 13.04 "Raring Ringtail". The unique USP about it is pure GNOME experience, devoid of Unity. Given it is the first official release with vanilla GNOME desktop and upgradable to GNOME 3.8, I was naturally inclined to try it out - to see whether it is more efficient than GNOME with Unity or not. The release announcement states briefly about the enhancements:
"The Ubuntu GNOME team is proud to announce our first release as an official Ubuntu derivative - Ubuntu GNOME 13.04. Ubuntu GNOME aims to bring a mostly pure GNOME desktop experience to Ubuntu. Keeping in coordination with the Ubuntu Desktop Team, we have decided to stay with GNOME 3.6 for the 13.04 release. What's new? Firefox has replaced GNOME Web (Epiphany) as the default browser; the Ubuntu Software Center and Update Manager have replaced GNOME Software; LibreOffice 4.0 is available by default instead of AbiWord and Gnumeric. For those excited about the latest version of GNOME, we do maintain the GNOME 3 PPA to catch an early look at GNOME 3.8."
From Ubuntu 13.04 Gnome http://mylinuxexplore.blogspot.in
I downloaded the 1 GB 32-bit ISO for testing. The system used for testing is Asus K54C laptop with 2 GB RAM and 2.2 Ghz Core i3 processor. I'll take you through my experience while using it for last 5 days, as my main operating system.

From Ubuntu 13.04 Gnome http://mylinuxexplore.blogspot.in
By default, Ubuntu 13.04 Gnome comes with Gnome 3.6, kernel 3.8.0-19 and Files 3.6.3 is the default file manager. Look-wise, it is plain vanilla GNOME - very simplistic and with all the drawbacks of GNOME 3.6! I could not take screenshots of start up screen but it reminded me of Lubuntu. I found some cool looking wallpapers pre-installed in Ubuntu Gnome as well.
From Ubuntu 13.04 Gnome http://mylinuxexplore.blogspot.in
From Ubuntu 13.04 Gnome http://mylinuxexplore.blogspot.in

Installation
Installation is pure Ubuntu and no complications therein. It took about 30 minutes of time including download of updates and restricted multimedia codecs. 
From Ubuntu 13.04 Gnome http://mylinuxexplore.blogspot.in
From Ubuntu 13.04 Gnome http://mylinuxexplore.blogspot.in
From Ubuntu 13.04 Gnome http://mylinuxexplore.blogspot.in
From Ubuntu 13.04 Gnome http://mylinuxexplore.blogspot.in
From Ubuntu 13.04 Gnome http://mylinuxexplore.blogspot.in
From Ubuntu 13.04 Gnome http://mylinuxexplore.blogspot.in
From Ubuntu 13.04 Gnome http://mylinuxexplore.blogspot.in


Applications
Ubuntu gnome comes with more or less similar applications, as in Ubuntu 13.04 with Unity. 
  • Office: LibreOffice 4.0.2.2 suite – Base, Calc, Writer, Impress, Draw, Document viewer, Dictionary
  • Internet: Firefox 20, Empathy, Transmission, Evolution, Desktop sharing
  • Graphics: Image viewer, Shotwell, simple scan
  • Multimedia: Rhythmbox music player, Totem movie player 3.6.3, Brasero, Cheese, Sound recorder
  • Accessories: Archive manager, calculator, gedit, terminal, screenshot
The applications work as expected. Thankfully, there is no Web or Epiphany and it retains Firefox. I never really liked Epiphany, honestly.

As multimedia codecs and Adobe flashplugin are there in the distro, I could easily play Youtube videos and watch movies in Gnome MPlayer. Rhythmbox also worked really well without any issue.
From Ubuntu 13.04 Gnome http://mylinuxexplore.blogspot.in
From Ubuntu 13.04 Gnome http://mylinuxexplore.blogspot.in
Like Ubuntu 13.04 with Unity 7, the GNOME version too has social network integration, though they are not present in Kubuntu, Lubuntu or Xubuntu. Empathy and Shotwell (as well as documents in GNOME 3.8) are the primary apps which integrates with the social networks.
From Ubuntu 13.04 Gnome http://mylinuxexplore.blogspot.in
From Ubuntu 13.04 Gnome http://mylinuxexplore.blogspot.in

Repositories
Ubuntu 13.04 GNOME sources applications from Ubuntu Raring Ringtail repos and the GUI is the Ubuntu Software Center.


From Ubuntu 13.04 Gnome http://mylinuxexplore.blogspot.in
I installed a docky (which didn't work) and a conky from the repositories. Conky worked well and added glamour to the otherwise bland desktop. 


From Ubuntu 13.04 Gnome http://mylinuxexplore.blogspot.in

Performance
I found Ubuntu 13.04 GNOME to be really smooth to use and consumed reasonably lower RAM and CPU than Ubuntu 13.04 with Unity 7. If I compare, Ubuntu GNOME with other distros having GNOME 3, Ubuntu performs reasonably well. It is more efficient than Ubuntu 12.10 & 13.04 but marginally less efficient than Ubuntu 12.04.2 LTS. All the metrics are based on 32-bit distros on the same laptop and under identical conditions.
 
-->
Parameters Size of ISO Base Desktop Linux kernel CPU Usage RAM usage
Pure OS 6 717 MB Debian Gnome 3.4.2 3.5.0 1-5% 165 MB
Ubuntu 12.04.2 LTS 693 MB Ubuntu Unity 5 with Gnome 3.4 3.5.0 1-10% 230 MB
ROSA 2012 Fresh Gnome 1.1 GB Mandriva Gnome 3.6.2 3.6.10 1-10% 235 MB
LuninuX 12.10 1.5 GB Ubuntu Gnome 3.6 with Docky 3.5.0 1-5% 280 MB
Ubuntu 13.04 Gnome 1 GB Ubuntu Gnome 3.6/ Gnome 3.8 3.8.0 1-10% 280 MB
Zorin 6 Core 1.4 GB Ubuntu Gnome 3.4.1 3.2.0 1-10% 300 MB
Fedora 18 Gnome 932 MB Fedora Gnome 3.6.2 3.6.10/3.7.2 1-10% 310 MB
OpenSUSE 12.2 Gnome 704 MB OpenSUSE Gnome 3.4.2 3.4.6 1-10% 310 MB
Pinguy OS 12.04 1.8 GB Ubuntu Gnome 3.4.1 3.2.0 1-5% 325 MB
Ubuntu 13.04 835 MB Ubuntu Unity 7 with Gnome 3.6 3.8.0 1-10% 400 MB
Ubuntu 12.10 790 MB Ubuntu Unity 6 with Gnome 3.6 3.5.0-17 1-10% 412 MB


Upgrading to GNOME 3.8
For me the upgrading process was quite simple
Add the GNOME 3.8 ppa
sudo add-apt-repository ppa:gnome3-team/gnome3
And then do an upgrade
sudo apt-get update && sudo apt-get dist-upgrade

I tried adding the gnome3-staging ppas and updates as well, but it rendered my system a bit unstable and hence, I had to purge it. However, the Gnome 3.8 DE worked fantastic on my laptop, effects are pretty smooth and subtle. Gnome 3.8 is definitely better than 3.6 though it is not as user friendly as a Gnome 3 was, but still it is progress. Ironically, GNOME 3 is progressing (or regressing?) with every release and coming closer to Gnome 2 experience!

On reboot, it was GNOME 3.8 as the DE with Files 3.8.1 as the file manager. I'll jot down the features than I saw in Gnome 3.8 shell for Ubuntu 13.04:

From Ubuntu 13.04 Gnome http://mylinuxexplore.blogspot.in
1. A new application launcher
Opening of applications is now made easier in GNOME 3.8 with the introduction of "Frequent Apps". While viewing the application overlay, there are two options at the bottom - "Frequent" and "All". Frequent stored my most commonly used applications and all had all the apps listed. I understand and agree that the Frequent tab is highly functional, but I don't see any point in degrading the "All" apps option. In Gnome 3.6, the applications would be listed in clear categories at the right side of the window and that is missing in 3.8. I found it quite handy, rather than scrolling through the application list, if you are not sure of the name of the app.


From Ubuntu 13.04 Gnome http://mylinuxexplore.blogspot.in
2. Gnome Online Accounts
In addition to Ubuntu online accounts, the settings manager has GNOME Online Accounts as well. Functionality-wise, both offer almost the same thing, except OwnCloud. GNOME 3.7 onwards provide integration to Owncloud services. It is a free software, owned by Debarshi Ray, which allows users to host their own cloud services on their own infrastructure. It allows access to files, calendar and address book through a web GUI which can be accessed via any browser. In essence, it is similar to Ubuntu One but with a free software running on the server side. I didn't try out OwnCloud that diligently this time, but plan to give it a shot pretty soon.


From Ubuntu 13.04 Gnome http://mylinuxexplore.blogspot.in
From Ubuntu 13.04 Gnome http://mylinuxexplore.blogspot.in
3. Improved Search Option
Search option in GNOME 3.8 is now much more improved with integration to contacts from social networks, installed applications and local files. It is not as good as Unity dash but pretty handy. Also, GNOME settings has a control option to include/exclude items from search.
From Ubuntu 13.04 Gnome http://mylinuxexplore.blogspot.in
From Ubuntu 13.04 Gnome http://mylinuxexplore.blogspot.in

4. GNOME Documents
Documents is a new addition to GNOME 3.8 and works well with Google docs. It is a handy addition if you rely primarily on Google docs and store a lot of files in Google drive.
From Ubuntu 13.04 Gnome http://mylinuxexplore.blogspot.in
From Ubuntu 13.04 Gnome http://mylinuxexplore.blogspot.in

5. Privacy options
GNOME 3.8 has a privacy option similar to Unity and users can control their visibility and whether to store or not the usage & history. Good to have definitely from an user point of view.
From Ubuntu 13.04 Gnome http://mylinuxexplore.blogspot.in

6. Improved Notification control
Notifications in Ubuntu GNOME appear even on the locked screen. I agree, having a good notification system is good but at times these "improved " notifications may really irritate you like hell, especially when the distro connects automatically to social networks once you log in and you need a couple of hours of undisturbed attention to complete a task in hand. GNOME 3.8 comes with a good control settings for the notifications to restore sanity in times of need.
From Ubuntu 13.04 Gnome http://mylinuxexplore.blogspot.in

7. Right click on Desktop is back!
GNOME 3 is coming closer to the simply wonderful GNOME 2 experience with every release! Now the right click is back and changing wallpaper is just a click away!
From Ubuntu 13.04 Gnome http://mylinuxexplore.blogspot.in

Things missing in Gnome 3.8 for Ubuntu
Unfortunately there was no GNOME classic mode for me in Ubuntu 13.04. Has it been removed by the time I installed?
No Boxes, Clocks, Weather, Bijiben, etc. - I was disappointed to be honest. I am going to test Sabayon 13.04 GNOME next week and possibly try out these applications. You can read about the top 10 features of Gnome 3.8 from OMGUbuntu.

Overall
Ubuntu 13.04 GNOME is very good and among the best GNOME 3 operating systems I have used. It also gives the user option to stay with the more stable (but less functional) GNOME 3.6 or upgrade to GNOME 3.8. With or without GNOME 3.8, the OS is very smooth to use and performs better than Ubuntu with Unity. 

A definite recommendation from my side for those who favor GNOME 3 over any other desktop and recommendation is to upgrade to GNOME 3.8. Though it is incomplete in Ubuntu 13.04, but still much better than the GNOME 3.6 provided by default with Ubuntu.

You can download the 32 and 64 bit versions of Ubuntu 13.04 GNOME from here.



May 10, 2013

9 Linux podcasts you should follow & others

What better way to keep up with Linux than listening to the experts talk about it while you're working or driving?

By Bryan Lunduke on Wed, 02/27/13 - 10:41am.There are a number of great websites that report on Linux-related news. But sometimes it's nice to listen to your news while driving to work...or playing in the background while getting some actual work done.
For that, you need podcasts. But with so many out there, where do you start? With that question in mind, I present to you some of the best podcasts (both audio and video) that the Linux world has to offer.

This Week In Linux – A great series of short videos covering, predominantly Linux and Android specific topics, produced by Jordan Keyes. It is always high-quality and extremely information-dense. This is, in my opinion, one of the “must watch” shows out there.

FLOSS Weekly – Part of the TWiT network, FLOSS Weekly (“Free Libre Open Source Software”) is hosted by Randal Schwartz – who is an all-around good dude – and a generally rotating crew of co-hosts. Longer shows (typically around an hour) and usually focused on a single topic (or interview). It’s more Open Source-oriented and less Linux-oriented (read: Lots of web technology discussion). If I could describe this show in one word it would be “cheesy.” But that can be a good thing.

Linux Action Show – Full disclosure here. I created this show back in 2006 – and left the show in the hands of my co-host in 2011. But, all narcissism aside, this is a quality show that (despite my absence) remains an excellent source of Linux news and reviews. It’s roughly one-hour long, somewhat video-centric...and very “morning drive time radio” in style.

The Linux Link Tech Show – This is the granddaddy of Linux podcasts, running continuously since 2003 (almost 10 years now). The show is extremely laid-back in style, often starting out with several minutes of the hosts’ casual chit-chat while setting up the remainder of the show, which typically runs about two and a half hours long. The result is that it feels like hanging out with the guys down at a local Linux User Group...which isn't a bad thing, unless, of course, you don't like user groups.

Going Linux – A relaxed, amateur (I use that in the absolutely most respectful way) style podcast. It feels like listening to AM radio - very laid back, focusing on how-to's and good information for those new to Linux.

Linux Outlaws – How to describe this show... “A German and a Brit walk into a bar and chat about Linux.” Heavy emphasis on the “walk into a bar” part (read: not safe for work). Sometimes funny. Sometimes Linux related. Sometimes not. But it is worth checking out to see if this is your style.

Mint Cast – Like many Linux shows, the style is very laid back. And, despite what the name suggests, “Mint Cast” is not just about the “Linux Mint” distribution. Good, smart guys who do a run-down of the recent Linux news with some great commentary.

Ubuntu UK – A great show by a great group of folks over in the UK. Good-natured and up-beat (but still relaxed), it feels a great deal like watching a British comedy chat show...about Linux. Plus, they have great taste in music.
World of Linux – This is my show. It’s focused on interviews with key members of the greater Linux community, with 8-bit inspired artwork. It is absolutely terrible. Nobody should watch it. Ever. (It's not self-promotion if I tell you to NOT watch it...right?).

There you go. Nine shows, all about Linux and all quite different in either style or content. If you could manage to catch all of them you'll probably know just about everything there is to know about Linux. Probably.

Source: http://www.networkworld.com/community/blog/9-linux-podcasts-you-should-follow 

Other Linux Podcast links:

Active Linux Podcasts

I’m putting a list of Linux/Tech/Security podcasts together to hand
out at http://OggCamp .org. The list comes from
http://www.thelinuxlink.net/ and I want to know am I missing any
active podcasts.
BSD Talk ( http://bsdtalk.blogspot.com/ )
Category5 ( http://www.category5.tv )
CCHits ( http://cchits.net/ )
Crivins ( http://unseenstudio.co.uk/casts/crivins )
/dev/random ( http://devrandom.ws )
DistroCast ( http://distrocast.org )
Distro Watch Weekly Podcast ( http://www.distrowatch.com/ )
DroidNation ( http://droid-nation.com/ )
FLOSS Weekly ( http://www.twit.tv/FLOSS )
Free As In Freedom ( http://faif.us )
Frostcast ( http://www.frostbitemedia.org )
Full Circle Magazine podcast ( http://fullcirclemagazine.org/ )
Games And More Entertainment Radio ( http://www.hwhq.com/ )
GNU World Order ( http://thebadapples.info )
Going Linux Podcast ( http://goinglinux.com )
Hacker Media ( http://www.hackermedia.org/ )
Hacker Public Radio ( http://hackerpublicradio.org/ )
Information Underground ( http://gopher.info-underground.net:70/iu/ )
Juiced Penguin Oggcast ( http://juicedpenguin.com/ )
Kernel Panic Oggcast ( http://kernelpanicoggcast.net )
Knight Wise Radio ( http://www.knightwise.com )
Linux Action Show ( http://www.jupiterbroadcasting.com )
Linux Basix ( http://www.linuxbasix.com )
Linux Crazy ( http://linuxcrazy.com/ )
Linux for the Rest of Us ( http://www.podnutz.com/linuxfortherestofus )
Linux In Da House ( http://linuxindahouse.org )
Linux in the Ham Shack ( http://lhspodcast.info )
Linux In The Shell ( http://linuxintheshell.org )
Linux News Log ( http://linux.quicksurf.com/ )
Linux Outlaws ( http://www.linuxoutlaws.com )
Linux Trivia Podcast ( http://www.setbit.org/lt.html )
Mint Cast ( http://mintcast.org )
MythTV Cast ( http://www.mythtvcast.com )
Network Security Podcast ( http://netsecpodcast.com/ )
OpenSource Musicians Podcast ( http://opensourcemusician.libsyn.com )
PaulDotCom Security Weekly ( http://pauldotcom.com )
QSK Cast ( http://qskcast.info/ )
screencasters.heathenx.org ( http://screencasters.heathenx.org )
Source Trunk ( http://sourcetrunk.com )
Sunday Morning Linux Review ( http://smlr.us )
Talk Geek To Me ( http://talkgeektome.us )
Tech Misfits ( http://techmisfits.com )
The BSD Show ( http://webbaverse.com/category/the-bsd-show )
The Bugcast ( http://www.thebugcast.org )
The Command Line Podcast ( http://thecommandline.net )
The Dick Turpin Road Show ( http://http://www.tdtrs.co.uk )
The Linux Link Tech Show ( http://www.tllts.org )
The Source Show ( http://thesourceshow.org/ )
The Techie Geek ( http://www.thetechiegeek.com )
Tin Foil Hat ( http://fuzionpodcastnetwork.com/?cat=15 )
TuxJam ( http://unseenstudio.co.uk/casts/tuxjam )
Tux Radar ( http://tuxradar.com/podcast )
Ubuntu UK Podcast ( http://podcast.ubuntu-uk.org/ )
€uroTr@sh: Information Security Podcast  ( http://www.eurotrashsecurity.eu )

Source: http://kenfallon.com/active-linux-podcasts/

May 9, 2013

US Military Academies using Ubuntu for Training Future Officers in Cyber Warfare

US Military Academies using Ubuntu for Training Future Officers in Cyber Warfare


According to The Washington Post, U.S. service academies are ramping up efforts to groom a new breed of cyberspace warriors to confront increasing threats to the nation's military and civilian computer networks which control almost everything these days. And guess what, they are being trained using Ubuntu OS (possibly in a virtual environment).
US Military Acadamies using Ubuntu for Training

Officers being Trained in Cyber Warfare using Ubuntu!
Ubuntu caught in the wild again. There was a recent report in The Washington Post about the grooming of future officers for cyberspace warfare by various Military academies in US. There was this little detail that they didn't cared to mention. In almost all the pictures, you could see that the desktops are running Ubuntu (possibly version 12.04 LTS or above). Here are some more pictures from the original article.

USAF using Ubuntu for Training Officers

US Military Acadamies using Ubuntu for Training officers in cyberwarfare

And if you look closely, there are indicators that, those Ubuntu desktops are running on a virtual environment, and the host OS is probably Windows 7. Thanks to our reader Alan again for the tip. [Source: The Washington Post]

International Space Station switches from Windows to Linux, for improved reliability

International Space Station switches from Windows to Linux, for improved reliability

The International Space Station, plus a special penguin tourist

Share This article

The United Space Alliance, which manages the computers aboard the International Space Station in association with NASA, has announced that the Windows XP computers aboard the ISS have been switched to Linux. “We migrated key functions from Windows to Linux because we needed an operating system that was stable and reliable.”
In specific, the “dozens of laptops” will make the change to Debian 6. These laptops will join many other systems aboard the ISS that already run various flavors of Linux, such as RedHat and Scientific Linux. As far as we know, after this transition, there won’t be a single computer aboard the ISS that runs Windows. Beyond stability and reliability, Keith Chuvala of the United Space Alliance says they wanted an operating system that “would give us in-house control. So if we needed to patch, adjust or adapt, we could.” It’s worth noting that the ISS laptops used to run Windows XP, and we know they’ve been infected by at least one virus in their lifetime: in 2008, a Russian cosmonaut brought a laptop aboard with the W32.Gammima.AG worm, which quickly spread to the other laptops on board. Switching to Linux will essentially immunize the ISS against future infections.


The laptops that were upgraded belong to the station’s OpsLAN. The crew use the OpsLAN to perform day-to-day activities, such as viewing stock inventory, controlling scientific experiments, or checking their current location. Presumably the laptops used to run bespoke Win32 apps on Windows XP, and now those apps have been re-written to work on Linux — hopefully they’re not being emulated in WINE. To get the astronauts and cosmonauts up to speed, they will be trained by the Linux Foundation.


To be honest, we shouldn’t be too surprised at the ditching of Windows. Linux is the scientific community’s operating system of choice. CERN’s Large Hadron Collider is controlled by Linux. NASA and SpaceX ground stations use Linux. DNA-sequencing lab technicians use Linux. Really, for applications that require absolute stability, which most scientific experiments are, Linux is the obvious choice. The fact that the entire OS is open source and can be easily customized for each experiment is obviously a very big draw, too.


Robonaut 2


In other news, the first humanoid robot in space, Robonaut 2, which also runs Linux, is due for an upgrade soon. Robonaut 2 (pictured above) was delivered on Space Shuttle Discovery’s final mission in 2011, and at the moment it’s just a torso with two arms — but later in 2013, some climbing legs and a battery pack should be delivered. The ultimate goal is to see whether humans and robots can operate peacefully in zero gravity, with Robonaut eventually performing menial tasks (vacuuming, changing filters), and possibly dangerous tasks during space walks, too.
Now read: Windows 8 may drive me to Linux

Source: http://www.extremetech.com/extreme/155392-international-space-station-switches-from-windows-to-linux-for-improved-reliability

How to convert YouTube Video to MP3 easily on GNU/Linux


May 072013
 
youtube2mp3

While looking at the top 10 download of Ubuntu app center for the month of April 2013 I’ve discovered a new software available for Ubuntu : YouTube to MP3.
It’s not a secret that on youtube there are a lof of music videos and also some full albums, and so with this software you can download them as mp3 file and listen them in a second moment or on a mp3 player.
YouTube to MP3 allows you to download and convert multiple videos into audio files, to do this you have simply to enter the URL of the video on youtube by clicking the Paste button or dragging in the window.



Installation

If you use Ubuntu you can install this software directly from the Ubuntu app center, If you are using Ubuntu 12.04 and have problem with YouTube to MP3 Converter type the following command in the Terminal:
sudo apt-get install ffmpeg libmp3lame0 libavcodec-extra-53
Or as alternative you can download the package from the official website , but as first thing install the pre-requisites with the following command:
sudo apt-get install ffmpeg libavcodec-extra-53
And after that install the package with the command
sudo dpkg -i YouTubeToMP3.amd64.deb
While installing it on my Mint Nadia (based on Ubuntu 12.10) I got a small problem:

mint-desktop tmp # sudo apt-get install ffmpeg libavcodec-extra-53
Reading package lists... Done
Building dependency tree       
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
 ffmpeg : Depends: libav-tools but it is not going to be installed
          Depends: libavdevice53 (>= 6:0.8.3-1~) but it is not going to be installed or
                   libavdevice-extra-53 (>= 6:0.8.6) but it is not going to be installed
          Depends: libavfilter2 (>= 6:0.8.3-1~) but it is not going to be installed or
                   libavfilter-extra-2 (>= 6:0.8.6) but it is not going to be installed
 libavcodec-extra-53 : Depends: libavutil-extra-51 (>= 6:0.8.6ubuntu0.12.10.1) but it is not going to be installed
                       Depends: libopenjpeg2 but it is not going to be installed
                       Conflicts: libavcodec53 but 6:0.8.6-0ubuntu0.12.10.1 is to be installed
 libavcodec53 : Conflicts: libavcodec-extra-53 but 6:0.8.6ubuntu0.12.10.1 is to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).
But following the suggestion I solved the problem
mint-desktop tmp # sudo apt-get -f install
....
At the end of the process I had everything solved and the software installed correctly.

Basic Usage

Once installed you can start this program from the terminal with the command YouTubeToMP3 or clicking on the Youtube to mp3 entry in the Menu, under Internet.
The first thing to do it’s to take a look at the settings, to access them click on the “gear” icon located in the bottom of YouTubeToMP3 application windows, this will open the settings window that has multiple tabs, the most interesting are:
The Download tab:


youtube2mp3-settings

In this Tab you can configure the number of parallel Downloads and the max bandwidth that the app can use, you can also setup a “speed limit mode”, you can set a limit lower of the former that you can activate from the application clicking on the snail icon, located at the bottom of the window.
Another interesting Tab is the Music output tab:


youtube2mp3-settings2


From this tab you can select the output format you like between mp3,ogg and m4a , the destination for the downloaded files, the default is the directory ~/Music/Downloaded by MediaHuman and the bitrate or quality of the produced file.

All done, once that you have set up these options you are ready to download your favourite video on youtube as mp3 file, close the setting window and go in the main window, the easiest way to add files is to copy the url of the youtube video on your clipboard and click on “Paste Url” this will add a small image of the video with its name in the download list, once you have put in all the urls you’d like to download just click on arrow down icon and the app will start to download the selected videos and convert them in the format you have previously selected.


youtube2mp3


These are 3 mp3 with bitrate 128 that I’ve downloaded as example to test the software, and anyway I suggest this group if you like ” American Celtic punk” genre.
#/Music/Downloaded by MediaHuman $ ls -alrt
total 13660
drwxr-xr-x 1 linuxaria linuxaria 48 May 7 23:17 ..
drwxr-xr-x 1 linuxaria linuxaria 316 May 7 23:17 .
-rw-r–r– 1 linuxaria linuxaria 3634092 May 7 23:17 Dropkick Murphy’s – The Dirty Glass.mp3
-rw-r–r– 1 linuxaria linuxaria 4217106 May 7 23:17 Dropkick Murphys – Going Out In Style (Official Video).mp3
-rw-r–r– 1 linuxaria linuxaria 3288707 May 7 23:18 Dropkick Murphys The Boys Are Back (Official Music Video).mp3

Conclusions

Quite easy to install and with some interesting configuration options this software allow everyone to easily download and convert any video that is present on youtube.
The bad side of this software ?
At the moment the only problem that I’ve found in this App is that It’s closed source, other than that it seem to work perfectly.

Source: http://linuxaria.com/pills/how-to-convert-youtube-video-to-mp3-easily-on-gnulinux?lang=en