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Instalando HP Virtual Rooms en Ubuntu

publicado a la‎(s)‎ 21 ene. 2014 10:49 por Domain Admin   [ actualizado el 21 ene. 2014 11:35 ]

Para poder usar el cliente de HP Virual Rooms en Ubuntu 12.10 primero debemos instalar los siguientes paquetes con apt-get:

$ sudo apt-get install libc6-i386 libsm6:i386 libxi6:i386 libxrender1:i386 libxrandr2:i386 zlib1g:i386 libglib2.0-0:i386 libxfixes3:i386 libasound2:i386 libfontconfig1:i386 libpng12-0:i386 libpng12-0:i386 libglu1-mesa:i386

Despues procedemos a descargar con el navegador Firefox el cliente de “64 bits” de la siguiente pagina:

https://www.rooms.hp.com/resources/

Usar la liga que dice: Download client installer for Firefox 4 or greater on 64-bit Linux

Una vez realizado esto procedemos a  descompactar (tar -xvzf hpvirtualrooms-install64-XX-X.X.X.XXXX.tar.gz), entrar al directorio creado (cd hpvirtualrooms-install) y correr el comando de instalación:

./install-hpvirtualrooms

Ya que lo tenemos instalado, procedemos a invocarlo en linea de comando desde nuestro home:

.hpvirtualrooms/hpvirtualrooms

Tambien se puede invocar desde el navegador Firefox con la URL de la presentacion que te envien, por ejemplo (sustituyendo por una key valida):

https://www.rooms.hp.com/attend/default.aspx?key=ABC1234D5E

Referencia:

https://hpedia.hp.com/wiki/HP_Virtual_Rooms#Linux_Client

Look at Linux

publicado a la‎(s)‎ 15 mar. 2012 11:26 por Domain Admin   [ actualizado el 15 mar. 2012 11:28 ]

Referencia Original: http://www.ibm.com/developerworks/linux/library/l-linuxuniversal/index.html

Linux is everywhere. If you peer into the smallest smart phone, to the virtual backbone of the Internet, or the largest and most powerful supercomputer, you'll find Linux. That's no simple feat given the range of capabilities expected from these platforms. Discover the omnipresence of Linux and how it supports devices large and small as well as

Linux® has come of age. In 2012, Linux will be 21 years old, a mature operating system with support for a spectrum of usage models. But it's hard to think of Linux as just an operating system—it's more like a chameleon. Its flexible and modular kernel addresses so many usage models (from the biggest supercomputer to the smallest embedded device) that it's difficult to classify it as anything other than an enabling technology. In fact, Linux is a platform. It's a key technology that enables the creation of new products, some of which were unknown just a short time ago.

Let's begin with a quick exploration of Linux, its basic architecture, and some of its important key principles. Then, look at how Linux applies these principles to a variety of usage models and why it's a platform, not just an operating system.

What is Linux?

On the surface, Linux is an operating system. As shown in Figure 1, Linux consists of a kernel (the core code that manages hardware and software resources) and a collection of user applications (such as libraries, window managers, and applications).


Figure 1. Linux on the surface
Diagram showing all the components of Linux for users, the kernel, and hardware

This simple diagram shows key principles that are easily overlooked. At the bottom of the Linux stack is a set of architecture-dependent code that enables Linux on a vast array of hardware platforms (ARM, PowerPC, Tilera TILE, and more). This functionality, of course, is enabled by the GNU toolchain, which enables Linux portability.

Linux is in a class of its own in the arena of portability. The driver subsystem (which is vast in its capability) supports dynamically loaded modules with no performance impact, enabling modularity (in addition to a more dynamic platform). Linux also includes kernel-level security (in a number of schemes) enabling a secure platform. In the domain of external file systems, Linux enables the largest array of file system support of any operating system, enabling, as one example, flexibility through design modularity. Linux implements not only standard scheduling features but also real-time scheduling (including guarantees on interrupt latency).

Finally, Linux is open, meaning that its source can be viewed and improved upon by practically anyone. This openness also minimizes the opportunities for exploits, creating a more secure platform. Many companies contribute to Linux, ensuring that it will continue to address a variety of usage models while maintaining its core properties.

These seven key principles are by no means the only attributes that Linux provides, but they enable Linux as a universal platform across a wide variety of usage models. Further, Linux is the same across these usage models—not just the design principles but the code itself. This cannot be said of other operating systems (such as Windows®—desktop, server, or embedded—or Mac OS X or Apple iOS), which fragment their offerings to support other usage models.

Where is Linux?

Where Linux is might be harder to answer than where it isn't. Linux, with its ability to morph and scale, can be found in all computing segments (and even some that are not yet fully defined). This section explores some of the major computing segments, including desktop/netbook, server, cluster, mainframe, supercomputer, handheld/tablet, embedded, virtualization, and experimental (see Figure 2).


Figure 2. Linux attributes and segments addressed
Diagram showing Linux attributes and the segments they address

Desktop and netbook

Desktops and netbooks, where many of people use Linux, is the area in which Linux struggles the most. Recent market share data indicates that Linux captures around 1.5% of the desktop market but around 32% of the netbook market. These numbers might appear low, but as a developer, I tend to see Linux more than any other operating system.

Linux began as a simple experimental operating system, and with the introduction of XFree86 in 1994, a window manager showed the promise of a fledgling desktop operating system. Today, several window managers are available for Linux (both a blessing and a curse), allowing users to tailor its personality to their needs. Further, Linux scales automatically with processor capabilities (such as multicore and symmetric multithreading), efficiently scheduling processes across with performance in mind.

Linux and the job market

A recent survey from Dice.com and the Linux Foundation found that 81% of more than 2,000 respondents indicated that Linux hiring was a priority in 2012. Not only is Linux driving industries, it's driving careers, as well.

Server

In the server market (consisting of web servers, mail servers, Domain Name System servers, and other back-end devices), Linux rules. Recent surveys found that more than 60% of all servers run a form of Linux. Outside of traditional web services, Linux powers many of the biggest Internet properties (Facebook, eBay, Twitter, and Amazon, to name a few), with the varying usage models and requirements. Beyond traditional options (such as web or mail), Linux offers the largest array of web services (and varying options for those services).

Cluster and distributed computing

Linux is not only a staple in clusters and distributed computing models, it is a driving force and at the core of many new usage models. Two key models that are quickly growing today are cloud computing and big data.

Cloud computing is about delivery of IT as a service and relies on a cluster of shared resources that scale to the need of a given application. Clouds also rely on virtualization to support the automated management of nodes within a massive infrastructure. Within cloud environments, 66% rely on Linux as their primary platform.

Linux is also driving itself as the platform for data science. The Internet scales the volume of data that can be collected, and new problems arise in the processing of this data to identify its valuable patterns. What is now called Big Data was developed on Linux as a scalable way to manipulate data that exceeded prior traditional methods. Hadoop and its ecosystem are a result of the openness of Linux, along with an army of developers who are proficient with the platform.

Mainframe

In 1991, a well-known editor predicted that the last mainframe would be unplugged in early 1996. More than 20 years later, mainframes continue to be built and sold, and many run Linux. IBM began supporting Linux on mainframes in 2000 (such as the popular IBM® System z®) and provides a common user experience across environments. A recent article from Michael Vizard documented that about 25% of new mainframe workloads rely on Linux. (See Resources.)

Supercomputer

Supercomputers are a constant arms race to hold the title of fastest, from the Oak Ridge National Laboratory's Jaguar supercomputer (2009) to the Chinese Tianhe-I (2010) to the current leader, Japan's RIKEN Kei computer (2011). In 2012, IBM's Sequoia supercomputer will be released and is expected to exceed the performance of RIKEN by a factor of two. What each of these supercomputers has in common is that they all run Linux. Linux is not only efficient, it's also adaptable to the various hardware platforms that push its performance. This shouldn't be surprising at all, given that more than 90% of supercomputers run Linux. (See Resources.)

Mobile devices and tablets

At the more constrained spectrum of consumer devices, mobile devices and tablets are demonstrating significant growth. These devices represent a Linux kernel coupled with a custom graphical user interface (GUI). A key example of this area is the Google Android operating system, which is used both in smart phones and in tablet computers. Today, more than 25% of smart phones run a form of Linux (primarily Android), with almost 40% of tablet computers running Android.

These devices rely on ARM-based processors (systems on a chip) for high performance and low power consumption. Regardless of the underlying platform, these are Linux devices, not forks of the kernel and applications.

Microsoft® recently confirmed that for their Windows on ARM (WOA) tablet, the only applications that will be supported are those being developed for the platform (in other words, you can't run old applications on the tablet). Compare this to Linux, which supports highly portable applications instead of a restricted and closed application ecosystem. (See Resources.)

Embedded

At the bottom of the spectrum are embedded devices, with varying degrees of constraints (processor performance, resources such as memory, and so on). Linux is ideal in most of these cases because of its ability to scale down and use any of the available embedded processors on the market. This flexibility makes Linux a highly used platform in televisions, in-car entertainment, navigation systems, and many other types of devices.

Linux is highly customizable and has a focus on low power consumption. To ensure the power focus, the Less Watts initiative tracks power consumption of Linux kernel releases. This project focuses mainly on Intel platforms but can also be useful for other processors.

Linux is a fairly standard offering for embedded devices and can determine the success or failure of the device (to support quick bring-up and development). One interesting recent device called the Raspberry Pi, an ARM-based credit card-sized computer, runs Linux and is intended as a learning device to teach programming. The device is anticipated to be priced at US$35 but is not yet available for purchase. (See Resources.)

Virtualization platform

One of the most interesting areas in which Linux drives innovation is in the virtualization domain. Linux is the operating system home to every kind of virtualization solution available, whether platform or para-virtualization, operating system virtualization, or more obscure ideas such as cooperative virtualization. Linux as an operating system is able to transform itself into a hypervisor (such as the Kernel Virtual Machine [KVM]) as well as hosting a number of research hypervisors. To bring additional efficiency to virtualization, Linux implements Kernel SamePage Merging to efficiently de-duplicate memory pages.

Linux is also driving the state of the art in a new advancement in virtualization called nested virtualization. Nesting, as the name implies, allows a hypervisor to host a guest hypervisor, which in turn hosts a set of guest virtual machines. Although at first glance an odd use case, nested virtualization will change cloud computing and extend the types of applications that can be hosted there. Today, Linux KVM supports nested virtualization.

Experimental platform

Last but not least is the foundation of Linux itself—an experimental platform through which many new ideas are being explored. In 1991, Linux was introduced as a toy operating system, 20 years after the first release of UNIX®. Today, Linux serves as a platform for experimentation in file system research, cluster computing, clouds, virtualization advancement, and stretches the limits by which a single operating system kernel can be applied to so many usage models. Linux as a platform enables accelerated experimentation through the use of both Linux and the massive array of open source components. The result is an array of interesting technologies built from Linux, including HP webOS, Google Chrome OS, and Android.

One interesting change introduced by Linux is the increasing irrelevance of the underlying hardware platform. Linux presents the same user experience regardless of the underlying hardware architecture. So whether a cloud is filled with AMD x86 servers or low-power ARM-based offerings, the applications running on Linux are abstracted from the physical architecture. This abstraction allows consumers to make decisions on platform based upon their requirements rather than being tied to common but archaic and inefficient architectures. Linux equals choice.

Linux is also a self-contained integrated development environment (IDE). In addition to hosting a world-class compiler toolchain (the GNC Compiler Collection), it hosts spectrum of tools ranging from debuggers, editors, version control systems, file tools, and shells and interpretors to help automate development tasks. Linux in this capacity makes it an ideal environment for software development and software research. (See Resources.)

Linux versatility

Supporting the various usage models defined here is simply a packaging option for Linux. Linux distributions address the desktop and server markets, where specialized distributions focus on embedded (such as uClinux, if your embedded device lacks a memory management unit). Anyone can take a Linux kernel and package a set of user applications for a specific usage model, taking advantage of the various benefits of Linux (the array of networking protocols and file systems, configurable and dynamic kernel, standard application programming interfaces). This is one of the reasons the fastest-growing smart phone platform runs Linux (with a customized UI for its personality).


Going further

If you compared Linux to a bridge, it would be a modern engineering marvel. Its distributed development model challenged the status quo, and the result is one of the most flexible software products ever created, spanning a variety of usage models from tiny embedded devices to massive supercomputers. Linux has shaped industries and led the way in cutting-edge research in cluster computing, file systems, clouds, and virtualization. Whatever computing environment is on the way, Linux will be there.


Resources

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About the author

M.Tim Jones

M. Tim Jones is an embedded firmware architect and the author of Artificial Intelligence: A Systems Approach, GNU/Linux Application Programming (now in its second edition), AI Application Programming (in its second edition), and BSD Sockets Programming from a Multilanguage Perspective. His engineering background ranges from the development of kernels for geosynchronous spacecraft to embedded systems architecture and networking protocols development. Tim is a platform architect with Intel and author in Longmont, Colorado.


Referencia Original: http://www.ibm.com/developerworks/linux/library/l-linuxuniversal/index.html

STOP SOPA

publicado a la‎(s)‎ 13 ene. 2012 10:03 por Domain Admin

Infografia SOPA

Instalando fuentes TTF en Ubuntu

publicado a la‎(s)‎ 7 dic. 2011 10:11 por Domain Admin

En mi caso baje el archivo de esta ubicación:

http://font.downloadatoz.com/download,11593,henrymorganhand-font-for-linux.html

lo descargue en mi directorio Downloads/fonts:

/home/sergio/Downloads/fonts/

ahi te metes a ese directorio donde lo bajaste

cd /home/sergio/Downloads/fonts/

Descompactas el archivo zip:

unzip HenryMorganHand-1283258569.zip

Eso te va a generar un archivo HenryMorganHand.ttf

Lo compruebas con el comando ll

Te cambias a este directorio:

cd /usr/local/share/fonts/truetype/

sino existe lo creas con:

sudo mkdir /usr/local/share/fonts/truetype

ya dentro de ese directorio creas otro y entras en el:

sudo mkdir myfonts

cd myfonts

Luego copias el archivo a ese directorio (ojo con el punto al final del comando):

sudo cp ~/Downloads/fonts/HenryMorganHand.ttf .

y por ultimo corres este comando:

sudo fc-cache -f -v

y eso es todo :D

Puedes bajar mas fuentes de este sitio:

http://www.1001fonts.com/font_categories.html


SysAdmin Day :)

publicado a la‎(s)‎ 29 jul. 2011 6:56 por Domain Admin


http://www.sysadminday.com/

Show your appreciation

Friday, July 29, 2011, is the 12th annual System Administrator Appreciation Day. On this special international day, give your System Administrator something that shows that you truly appreciate their hard work and dedication. (All day Friday, 24 hours, your own local time-zone).

Let's face it, System Administrators get no respect 364 days a year. This is the day that all fellow System Administrators across the globe, will be showered with expensive sports cars and large piles of cash in appreciation of their diligent work. But seriously, we are asking for a nice token gift and some public acknowledgement. It's the least you could do.

Consider all the daunting tasks and long hours (weekends too.) Let's be honest, sometimes we don't know our System Administrators as well as they know us. Remember this is one day to recognize your System Administrator for their workplace contributions and to promote professional excellence. Thank them for all the things they do for you and your business.

http://www.sysadminday.com/

Arduino en Campus Party México 2011

publicado a la‎(s)‎ 20 jul. 2011 15:18 por Domain Admin

CPMX3 - Arduino: Empoderamiento a través de hardware libre #cpIN

Para los que no pudieron asistir al CPMX3 pueden consultar los videos de las ponencias en Youtube, un buen ejemplo de ellas es la de Arduino:


Ahi mismo pueden ver la columna de videos sugeridos para ver otras ponencias del Evento. Espero les sea de utilidad.

dmidecode

publicado a la‎(s)‎ 13 abr. 2011 10:49 por Domain Admin   [ actualizado el 13 abr. 2011 11:32 ]

Hace poco me preguntaron como sacar el modelo del hardware donde esta instalado un Linux, y como no me quise quedar con la duda, aqui esta la respuesta: dmidecode. Esto es de gran utilidad cuando no tenemos acceso físico al equipo servidor al que nos conectamos remotamente.

Dmidecode nos ofrece información del hardware de la maquina, la cual es leida directamente del BIOS del equipo.

El comando básico para obtener la salida por default es:

# dmidecode

Pero existen mas parametros que nos ayudaran a encontrar segmentos especificos del BIOS, y el que nos interesa es --type

En mi caso me interesa obtener el modelo del equipo, esto lo obtenemos con el parametro system:

# dmidecode --type system

El cual nos dara una salida como la siguiente:

# dmidecode 2.9
SMBIOS 2.4 present.

Handle 0x000B, DMI type 1, 27 bytes
System Information
Manufacturer: Hewlett-Packard
Product Name: HP Compaq 6530b (NA407UC#ABM)
Version: F.14
Serial Number: CNU9376SQC
UUID: 88522A0B-05D6-DD11-ACB9-DDA4BF0C90E9
Wake-up Type: Power Switch
SKU Number: NA407UC#ABM
Family: 103C_5336AN

Handle 0x000E, DMI type 32, 20 bytes
System Boot Information
Status: No errors detected

Hay otros parametros que nos amplian la info del bios:

# dmidecode --type bios
# dmidecode --type baseboard
# dmidecode --type chassis
# dmidecode --type processor
# dmidecode --type memory
# dmidecode --type cache
# dmidecode --type connector
# dmidecode --type slot

Tambien existe el comando lshw pero en mi opinion es mas lenta su ejecucion, y con dmidecode lo podemos separar por segmentos.

Referencias:

FLISOL 2011 México

publicado a la‎(s)‎ 5 abr. 2011 11:49 por Domain Admin


El Festival Latinoamericano de Instalación de Software Libre (FLISoL) es el evento de difusión de Software Libre más grande en Latinoamérica. Se realiza desde el año 2005 y desde el 2008 se adoptó su realización el 4to Sábado de abril de cada año. En 2011 por única vez será el día 9 de Abril. 

Su principal objetivo es promover el uso del software libre, dando a conocer al público en general su filosofía, alcances, avances y desarrollo. 

A tal fin, las diversas comunidades locales de software libre (en cada país/ciudad/localidad), organizan simultáneamente eventos en los que se instala, de manera gratuita y totalmente legal, software libre en las computadoras que llevan los asistentes. Además, en forma paralela, se ofrecen charlas, ponencias y talleres, sobre temáticas locales, nacionales y latinoamericanas en torno al Software Libre, en toda su gama de expresiones: artística, académica, empresarial y social.



COSIT 2011 - http://www.cosit.mx

publicado a la‎(s)‎ 16 mar. 2011 8:59 por Domain Admin

El Congreso Mexicano de la Sociedad de la Información y Conocimiento Libre (CosiT) es un evento promovido por la Comisión de Ciencia y Tecnología del Senado de la República que busca reunir a personalidades mundiales y nacionales de Software Libre y de la Sociedad de la Información.

El evento busca exponer los beneficios económicos, sociales, políticos y culturales de la adopción del Software Libre como programa de gobierno y estrategias de competitividad para universidades, empresas e industrias.

El tema del congreso es "Innovar para Crecer", concepto que significa desarrollo de tecnología propia, generación de ventajas competitivas a partir de tecnologías libres, el establecimiento de estrategias para superar el estancamiento social y la autonomía para eficientar organizaciones públicas y privadas.

Las conferencias magistrales, talleres y mesas de debate ofrecen un marco de referencia respecto a la investigación de los líderes de informática como Richard Stallman, al mismo tiempo de presentar casos de éxito en nuestro país.

Por estas y otras razones, el Congreso Mexicano de la Sociedad de la Información y Conocimiento Libre será una experiencia única a la cuál no puedes faltar.

http://www.cosit.mx

LibreOffice 3

publicado a la‎(s)‎ 5 feb. 2011 17:14 por Domain Admin   [ actualizado el 5 feb. 2011 17:21 ]

LibreOffice es una suite gratuita de productividad personal de código abierto para Windows, Macintosh y Linux, que le da 6 aplicaciones ricas en funcionalidades para todas sus necesidades de producción de documentos y procesamiento de datos: Writer, Calc, Impress, Draw, Base y Math. La asistencia y documentación es gratuita gracias a su gran comunidad, usuarios dedicados, colaboradores y desarrolladores.

http://www.libreoffice.org/
Review
http://www.linuxfordevices.com/c/a/News/LibreOffice-33-review/

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