|By Chris Negus||
|February 28, 2006 09:00 AM EST||
Excerpted in part from Red Hat Fedora and Enterprise Linux 4 Bible by Christopher Negus (Wiley Publishing, 2005)
In its Fedora Core Linux system, the Red Hat-sponsored Fedora Project aims to only include software that is Open Source and free of reasonable patent claims. As a result, at random intervals, an article or mailing list post will exclaim how Fedora sucks because it doesn't have xyz media player, certain file system support, or other favorite that's in some other Linux.
Despite the fact that Red Hat sometimes seems bent on making money, proponents of the free and Open Source software movement can feel relatively safe that no one will hide code or sue them for using Fedora Core. But if not having a piece of software that's in some other Linux (or Windows) system is keeping you from switching to Fedora, then there may be a simple answer. You might just need to know where to look and what to do.
Adding Software to Fedora
Fedora is a great foundation on which to build a free cutting-edge desktop or personal server system. With Fedora Core 4, Red Hat has finally done more with Fedora than make it a testbed for Red Hat Enterprise Linux. It has put tools and projects in place to let outside initiatives package and distribute almost any Open Source software for Fedora.
Of course, you can go straight to a software project site (try Sourceforge.net) to download and build the software you want yourself. But a lot of people prefer to have dependencies already worked out, a central mechanism for tracking bugs, and the ability to manage software with RPM tools. So, they look for software that's already in RPM format.
While the underlying RPM tools and database on a Fedora system are excellent for installing, querying, and removing individual packages, they weren't intended for working with software repositories. For Fedora, the tool of choice is the Yellow Dog Updater Modified more commonly referred to as yum.
There are several features that have made yum such an effective tool for getting and updating the software you use with Fedora:
- Repositories: By configuring yum to look to online repositories for packages you request, you don't need to have the software package you want already on your hard disk or CD. Fedora Core 4 comes already configured to point to online repositories for Fedora Core and Fedora Extras (more on that later). So all you have to do is ask for any packages from those two areas with yum to have the packages you want downloaded and installed.
- Dependencies: Not only does yum get the packages you request, but it also finds any dependent packages you need to get requested packages to work. So, request package A and yum asks you if you also want to install required packages B, C, and D as well. Say yes, and yum will download and install them all.
- Updates and Upgrades: As security fixes and bug fixes become available, the Fedora Project adds updated packages to yum repositories. A single yum command can get the latest update for some or all of your packages. Yum also supports upgrades, where obsolete packages are removed.
Expanding from Fedora Core
The Fedora Project wants to keep Fedora Core to a reasonable size. So far, reasonable has meant four binary software CDs (although FC5 in testing has, at the moment, spilled over to five CDs). For those who want a reliable foundation and a set of CDs that can be distributed without costing too much (even four is a lot to include with a book), the approach makes sense.
But what about the software that's left out to make room for the latest whatever-is-starting-to-get-hot-for-enterprise software? Maybe you liked Abiword or ncftp and don't want to figure out how to get it and maintain it yourself when it moved out of Core. Most of those packages aren't gone...they've just moved into Fedora Extras.
Fedora Extras packages are available for FC3 and FC4. Both i386 and 64-bit Extras RPMs are available for both releases, while PowerPC versions are available for FC4 as well.
Fedora Core aims to include packages that fit in - in other words, software with localized user interface and accessibility support; software that integrates with other Fedora Core software, without duplicating functionality. As a result, Extras includes extra applications that duplicate stuff already in Core (such as window managers, audio players, and so on) or are more recreational (like games).
Because Fedora Extras, like Fedora Core, meets Fedora Project guidelines (Open Source and patent issues), yum in FC4 is pre-configured to grab packages from Fedora Extras. You must set up yum yourself to use outside repositories.
Yum for Fedora Core and Extras
With a connection to the Internet and Fedora Core 4 installed you can install any packages from Fedora Core or Extras using yum, with no additional configuration. Here's how to find out what's available:
- Fedora Core: Open the Package Management utility by running system-config-packages (Desktop -> System Settings -> Add/Remove Packages). Next to each category of software, select Details to see which packages are and are not installed. Then install packages from an FC4 CD using that window or get packages using yum.
- Fedora Extras: To find packages available for Fedora Extras, start at the Fedora Project wiki (http://fedoraproject/wiki/Extras). You can elect to see a list of packages for your Fedora release (FC3 or FC4) and architecture (i386, x86_64, or PPC).
To install a package from Fedora Core or Extras, you need to run yum as the root user from a shell. Here's an example of yum to install the clamav package from Fedora Extras:
# yum install clamav
Select yes and clamav and dependent packages download and install. Instead of clamav, use any package name from the yum repositories. To check for updates to an installed package, use check-update:
# yum check-update clamav
If an update to the package is available, use yum with the update option as follows:
# yum update clamav
To check for updates for packages installed in Fedora - do this after you first install Fedora - type the following:
# yum check-update
If you want to update all the packages with available updates, type the following:
# yum update
Yum can also list available packages, as well as those that are already installed. To see a list of all packages available for download from the repositories you have set up, type:
# yum list | less
Adding less lets you scroll through the list (it could be long, depending on your repositories). This first lists installed packages, then packages still available from the repositories. Adding the -C option to yum uses cached repository information, which can make it run faster, but may not result in the latest information.
If you try to install a package and it fails with a message like "package xyzpackage needs xyzfile (not provided)" check for packages that include the missing file using the provides option:
# yum provides missingfile
With provides, yum searches your repositories for the file you entered (instead of missingfile) and returns the name of the packages that include that file. To search software descriptions in repositories for a particular string, use the search option. For example, this searches for arcade in any package description (you'll find some games with this search):
# yum search arcade
As enterprises capture more and more data of all types – structured, semi-structured, and unstructured – data discovery requirements for business intelligence (BI), Big Data, and predictive analytics initiatives grow more complex. A company’s ability to become data-driven and compete on analytics depends on the speed with which it can provision their analytics applications with all relevant information. The task of finding data has traditionally resided with IT, but now organizations increasingly turn towards data source discovery tools to find the right data, in context, for business users, d...
Oct. 4, 2015 03:00 PM EDT Reads: 353
“The Internet of Things transforms the way organizations leverage machine data and gain insights from it,” noted Splunk’s CTO Snehal Antani, as Splunk announced accelerated momentum in Industrial Data and the IoT. The trend is driven by Splunk’s continued investment in its products and partner ecosystem as well as the creativity of customers and the flexibility to deploy Splunk IoT solutions as software, cloud services or in a hybrid environment. Customers are using Splunk® solutions to collect and correlate data from control systems, sensors, mobile devices and IT systems for a variety of Ind...
Oct. 4, 2015 02:45 PM EDT Reads: 549
Clearly the way forward is to move to cloud be it bare metal, VMs or containers. One aspect of the current public clouds that is slowing this cloud migration is cloud lock-in. Every cloud vendor is trying to make it very difficult to move out once a customer has chosen their cloud. In his session at 17th Cloud Expo, Naveen Nimmu, CEO of Clouber, Inc., will advocate that making the inter-cloud migration as simple as changing airlines would help the entire industry to quickly adopt the cloud without worrying about any lock-in fears. In fact by having standard APIs for IaaS would help PaaS expl...
Oct. 4, 2015 02:30 PM EDT Reads: 369
Organizations already struggle with the simple collection of data resulting from the proliferation of IoT, lacking the right infrastructure to manage it. They can't only rely on the cloud to collect and utilize this data because many applications still require dedicated infrastructure for security, redundancy, performance, etc. In his session at 17th Cloud Expo, Emil Sayegh, CEO of Codero Hosting, will discuss how in order to resolve the inherent issues, companies need to combine dedicated and cloud solutions through hybrid hosting – a sustainable solution for the data required to manage I...
Oct. 4, 2015 02:00 PM EDT Reads: 386
SYS-CON Events announced today that IBM Cloud Data Services has been named “Bronze Sponsor” of SYS-CON's 17th Cloud Expo, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. IBM Cloud Data Services offers a portfolio of integrated, best-of-breed cloud data services for developers focused on mobile computing and analytics use cases.
Oct. 4, 2015 01:00 PM EDT Reads: 532
SYS-CON Events announced today that ProfitBricks, the provider of painless cloud infrastructure, will exhibit at SYS-CON's 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. ProfitBricks is the IaaS provider that offers a painless cloud experience for all IT users, with no learning curve. ProfitBricks boasts flexible cloud servers and networking, an integrated Data Center Designer tool for visual control over the cloud and the best price/performance value available. ProfitBricks was named one of the coolest Clo...
Oct. 4, 2015 01:00 PM EDT Reads: 693
Learn how IoT, cloud, social networks and last but not least, humans, can be integrated into a seamless integration of cooperative organisms both cybernetic and biological. This has been enabled by recent advances in IoT device capabilities, messaging frameworks, presence and collaboration services, where devices can share information and make independent and human assisted decisions based upon social status from other entities. In his session at @ThingsExpo, Michael Heydt, founder of Seamless Thingies, will discuss and demonstrate how devices and humans can be integrated from a simple clust...
Oct. 4, 2015 12:00 PM EDT Reads: 600
As more and more data is generated from a variety of connected devices, the need to get insights from this data and predict future behavior and trends is increasingly essential for businesses. Real-time stream processing is needed in a variety of different industries such as Manufacturing, Oil and Gas, Automobile, Finance, Online Retail, Smart Grids, and Healthcare. Azure Stream Analytics is a fully managed distributed stream computation service that provides low latency, scalable processing of streaming data in the cloud with an enterprise grade SLA. It features built-in integration with Azur...
Oct. 4, 2015 11:00 AM EDT Reads: 707
Apps and devices shouldn't stop working when there's limited or no network connectivity. Learn how to bring data stored in a cloud database to the edge of the network (and back again) whenever an Internet connection is available. In his session at 17th Cloud Expo, Bradley Holt, Developer Advocate at IBM Cloud Data Services, will demonstrate techniques for replicating cloud databases with devices in order to build offline-first mobile or Internet of Things (IoT) apps that can provide a better, faster user experience, both offline and online. The focus of this talk will be on IBM Cloudant, Apa...
Oct. 4, 2015 11:00 AM EDT Reads: 342
You have your devices and your data, but what about the rest of your Internet of Things story? Two popular classes of technologies that nicely handle the Big Data analytics for Internet of Things are Apache Hadoop and NoSQL. Hadoop is designed for parallelizing analytical work across many servers and is ideal for the massive data volumes you create with IoT devices. NoSQL databases such as Apache HBase are ideal for storing and retrieving IoT data as “time series data.”
Oct. 4, 2015 10:45 AM EDT Reads: 352
SYS-CON Events announced today that HPM Networks will exhibit at the 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. For 20 years, HPM Networks has been integrating technology solutions that solve complex business challenges. HPM Networks has designed solutions for both SMB and enterprise customers throughout the San Francisco Bay Area.
Oct. 4, 2015 09:00 AM EDT Reads: 542
Mobile messaging has been a popular communication channel for more than 20 years. Finnish engineer Matti Makkonen invented the idea for SMS (Short Message Service) in 1984, making his vision a reality on December 3, 1992 by sending the first message ("Happy Christmas") from a PC to a cell phone. Since then, the technology has evolved immensely, from both a technology standpoint, and in our everyday uses for it. Originally used for person-to-person (P2P) communication, i.e., Sally sends a text message to Betty – mobile messaging now offers tremendous value to businesses for customer and empl...
Oct. 4, 2015 08:30 AM EDT Reads: 150
SYS-CON Events announced today that MobiDev, a software development company, will exhibit at the 17th International Cloud Expo®, which will take place November 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. MobiDev is a software development company with representative offices in Atlanta (US), Sheffield (UK) and Würzburg (Germany); and development centers in Ukraine. Since 2009 it has grown from a small group of passionate engineers and business managers to a full-scale mobile software company with over 150 developers, designers, quality assurance engineers, project manage...
Oct. 4, 2015 04:00 AM EDT Reads: 659
The broad selection of hardware, the rapid evolution of operating systems and the time-to-market for mobile apps has been so rapid that new challenges for developers and engineers arise every day. Security, testing, hosting, and other metrics have to be considered through the process. In his session at Big Data Expo, Walter Maguire, Chief Field Technologist, HP Big Data Group, at Hewlett-Packard, will discuss the challenges faced by developers and a composite Big Data applications builder, focusing on how to help solve the problems that developers are continuously battling.
Oct. 4, 2015 04:00 AM EDT Reads: 322
SYS-CON Events announced today that Cloud Raxak has been named “Media & Session Sponsor” of SYS-CON's 17th Cloud Expo, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. Raxak Protect automates security compliance across private and public clouds. Using the SaaS tool or managed service, developers can deploy cloud apps quickly, cost-effectively, and without error.
Oct. 3, 2015 01:15 PM EDT Reads: 570
Who are you? How do you introduce yourself? Do you use a name, or do you greet a friend by the last four digits of his social security number? Assuming you don’t, why are we content to associate our identity with 10 random digits assigned by our phone company? Identity is an issue that affects everyone, but as individuals we don’t spend a lot of time thinking about it. In his session at @ThingsExpo, Ben Klang, Founder & President of Mojo Lingo, will discuss the impact of technology on identity. Should we federate, or not? How should identity be secured? Who owns the identity? How is identity ...
Oct. 3, 2015 11:00 AM EDT Reads: 396
SYS-CON Events announced today that Solgeniakhela will exhibit at SYS-CON's 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. Solgeniakhela is the global market leader in Cloud Collaboration and Cloud Infrastructure software solutions. Designed to “Bridge the Gap” between Personal and Professional Social, Mobile and Cloud user experiences, our solutions help large and medium-sized organizations dramatically improve productivity, reduce collaboration costs, and increase the overall enterprise value by bringing ...
Oct. 2, 2015 10:00 PM EDT Reads: 539
Sensors and effectors of IoT are solving problems in new ways, but small businesses have been slow to join the quantified world. They’ll need information from IoT using applications as varied as the businesses themselves. In his session at @ThingsExpo, Roger Meike, Distinguished Engineer, Director of Technology Innovation at Intuit, will show how IoT manufacturers can use open standards, public APIs and custom apps to enable the Quantified Small Business. He will use a Raspberry Pi to connect sensors to web services, and cloud integration to connect accounting and data, providing a Bluetooth...
Oct. 2, 2015 03:30 PM EDT Reads: 337
SYS-CON Events announced today that Micron Technology, Inc., a global leader in advanced semiconductor systems, will exhibit at the 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. Micron’s broad portfolio of high-performance memory technologies – including DRAM, NAND and NOR Flash – is the basis for solid state drives, modules, multichip packages and other system solutions. Backed by more than 35 years of technology leadership, Micron's memory solutions enable the world's most innovative computing, consumer,...
Oct. 2, 2015 07:00 AM EDT Reads: 553
Nowadays, a large number of sensors and devices are connected to the network. Leading-edge IoT technologies integrate various types of sensor data to create a new value for several business decision scenarios. The transparent cloud is a model of a new IoT emergence service platform. Many service providers store and access various types of sensor data in order to create and find out new business values by integrating such data.
Oct. 1, 2015 02:30 PM EDT Reads: 394