Thursday, June 12, 2014

Internal Error Ubuntu 12.04

internal error message

In ubuntu discussion this time is about error messages that often appear in the ubuntu desktop. Ubuntu users must have got the message as shown above


Users do not get a choice but to press the Continue button. This error message is inadvertently displayed in Ubuntu 12.04 LTS with the goal of the developers can find out the bug / problem that can be fixed later for desktop users as we might a little disturbing because this message will appear any time if there is a bug / problem in ubuntu that we use.

There is a suggestion that this feature remains enabled, but not one as well to know a simple way to disable this feature.
1. Open a terminal or console (ctrl + alt + t)
2. Use any editor (gedit, vim, pico, nano) in this case I use vim sudo vim /etc/default/apport
3. At the line enabled = 0 to disable the content parameters, while 1 to re-activate.

vim editor to open apport

May be useful for us all
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Tuesday, June 3, 2014

Ubuntu 14.04 Upgrade HowTo

14.04 LTS Ubuntu has been released last April 2014. For users of earlier versions of Ubuntu such as 13.10, 13.04 or 12.04 LTS there would be a question of how to upgrade to the latest edition of ubuntu 14.04 LTS? You can upgrade from a minor or major release of Ubuntu Easily and recommended for all users There are several steps that must be done to upgrade to Ubuntu 14.04 LTS:


1. Perform backups of your important data. Can save to another partition on the computer or storage media which you have.
2. Ensure release of Ubuntu you type the following command in the shell (to simplify the example I give a command shell and as root)
root@yoyok:~# uname -mrs
root@yoyok:~# lsb_release -a
the result are
Linux 3.2.0-51-generic x86_64 No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 12.04.4 LTS Release: 12.04 Codename: precise

3. How do I upgrade to a newer version of Ubuntu 14.04, from an older Ubuntu? Type the following command to update package list and install the update-manager-core package if it is not already installed:

yyp@yoyok:~# sudo apt-get update
yyp@yoyok:~# sudo apt-get install update-manager-core

Next, type the following command to upgrade the Ubuntu to the latest release such as LTS 14.04 from the command-line.

yyp@yoyok:~# sudo do-release-upgrade

The do-release-upgrade will launch the upgrade tool. You need to follow the on-screen instructions. 

4. Fixing and forcing upgrade You may end up getting the following message on screen when you run sudo do-release-upgrade

Checking for a new Ubuntu release No new release found
To force upgrade pass the -d option to sudo do-release-upgrade command:
yyp@yoyok:~# sudo do-release-upgrade -d
5. Reboot the desktop or server Reboot the system
yyp@yoyok:~# sudo reboot
Verify, your new settings:
root@yoyok:~# lsb_release -a
root@yoyok:~# uname -mrs
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Friday, May 30, 2014

Ubuntu 14.04 Trusty Tahr, What's new in this LTS

Ubuntu 14.04 LTS Final now there and ready for download. You can download it from the server Indonesia, one of which is in mirror.unej.ac.id 

14.04 LTS, LTS means Long Term Support, meaning that the Ubuntu LTS given support or updates for five years. This means that Ubuntu will be updated until 14.04 the next five years. 

To understand more deeply, it is better to download and try to install on your computer. Here are a few of the many advantages compared to previous versions of Ubuntu 14.04.


It's no secret since the Ubuntu Unity interface wear, they got a lot of criticism and problems. Unity itself becomes an interface defaut Ubuntu since 2011, the previous default Ubuntu is a Gnome interface. Ubuntu Unity, now much more refined and has better performance and faster. Perhaps there are still some less than perfect, but not too flashy. At 14.04 LTS Ubuntu Unity, Compiz plugins already replaced the same decor GTK3 CSS themed window decoration. GTK3 resize has better speed and anti-alias feature in every corner of the corner of the window. Top panel also already be in the right click option that will give you the option for minimize, unmaximize, set the window always on top. As a whole may not be too different from the previous edition. For systems in which there is a slightly different way of setting APT sources.list, in this edition source.lst been grouped by mirrors to be addressed. As for the disadvantages, there are some applications that are not available in this edition. But as a whole the same flavor and a little different.
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Monday, September 16, 2013

Shiny R with Ubuntu


The first hearing of an application is not shiny like it as a song lyric I have ever heard. Shiny introduced by a professor, he was a friend of mine who is an expert in the field of statistics in particular R.

Shiny makes it super simple for R users like you to turn analyses into interactive web applications that anyone can use. Let your users choose input parameters using friendly controls like sliders, drop-downs, and text fields.

Easily incorporate any number of outputs like plots, tables, and summaries. No HTML or JavaScript knowledge is necessary. If you have some experience with R, you’re just minutes away from combining the statistical power of R with the simplicity of a web page. Next is complete list of instructions for installing Shiny Server and its prerequisites on Ubuntu
# Install Node.js
sudo apt-get update
sudo apt-get install software-properties-common python-software-properties python g++ make
sudo add-apt-repository ppa:chris-lea/node.js
sudo apt-get update
sudo apt-get install nodejs

# Install R
sudo add-apt-repository 'deb http://cran.rstudio.com/bin/linux/ubuntu raring/'
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys E084DAB9
sudo apt-get update
sudo apt-get install r-base r-base-dev


The same as above, except when installing R this line:
sudo add-apt-repository 'deb http://cran.rstudio.com/bin/linux/ubuntu raring/'
must be replaced with this line for Ubuntu 12.10:
sudo add-apt-repository 'deb http://cran.rstudio.com/bin/linux/ubuntu quantal/'
or with this line for Ubuntu 12.04:
sudo add-apt-repository 'deb http://cran.rstudio.com/bin/linux/ubuntu precise/'
# Install Shiny in system-wide library
sudo su - -c "R -e \"install.packages('shiny', repos='http://cran.rstudio.com/')\""
sudo npm install -g shiny-server
# Install Upstart script
sudo wget\ https://raw.github.com/rstudio/shiny-server/master/config/upstart/shiny-server.conf\ -O /etc/init/shiny-server.conf
# Create a system account to run Shiny apps
sudo useradd -r shiny

# Create a root directory for your website
sudo mkdir -p /var/shiny-server/www

# Create a directory for application logs
sudo mkdir -p /var/shiny-server/log
# Start Shiny
sudo start shiny-server

# Optional: Install examples to test
sudo cp -R /usr/local/lib/R/site-library/shiny/examples /var/shiny-server/www/
Now open a browser to http://localhost:3838/examples/ and see if they work.
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