Bacula is a set of Open Source, enterprise ready, computer programs that permit you (or the system administrator) to manage backup, recovery, and verification of computer data across a network of computers of different kinds. Bacula is relatively easy to use and efficient, while offering many advanced storage management features that make it easy to find and recover lost or damaged files. In technical terms, it is an Open Source, enterprise ready, network based backup program.
device-mapper (dm): working with multipath-tools. Part 1 Filed under: SCSI, Linux — admin @ 10:33 Device-mapper (hereafter, dm) is one of the best collection of device drivers that I have ever worked with. It brings high availability, flexibility and more to the Linux 2.6 kernel. Device-mapper is a Linux 2.6 kernel infrastructure that provides a generic way to create virtual layers of a block device while supporting stripping, mirroring, snapshots, concatenation, multipathing, etc. While many modules are built on top of device-mapper, the focus of this article is on multipath-tools. Note that I will be using the terms multipath, multipath-tools and dm-multipath interchangeably to signify the same package. Also note that dm-multipath is the name of the repackaged multipath-tools redistributed under Red Hat in their Advanced Server Linux distribution.
One of the main advantages of using Negative type film is the ability to capture a wider dynamic range than can be achieved with Reversal types (slide/chromes). Unfortunately the image data is usually compressed into a much smaller density range. The big trade-off is our inability to immediately see the information due to the orange mask.
Create an iso image from the contents of a directory: mkisofs -hide-joliet-trans-tbl -l -J -f -T -r . > "../directory_dump_`basename $PWD`.iso" When run in a directory (say tmp) it will create a file called directory_dump_tmp.iso one directory higher, which will contain the contents of the tmp directory in it's root.
Friday, March 13, 2009 Extra Repositories for Ubuntu 8.10 You Might Want Ubuntu logoImage via Wikipedia The repository system is a great strength of open-source operating systems, but some people want the latest-and-greatest of a particular application while keeping the core system unchanged. There is also the situation where non-free applications aren't available from within the standard repositories. In these two cases, adding outside repos can help you get the functionality you want. I've done some homework for you and here are the "Extra Repositories for Ubuntu 8.10 You Might Want." Simply open up System > Administration > Software Sources and add the repository lines listed below as a third-party repository.
FOR MORE THAN HALF A CENTURY the eminent physicist Freeman Dyson has quietly resided in Princeton, N.J., on the wooded former farmland that is home to his employer, the Institute for Advanced Study, this country’s most rarefied community of scholars. Lately, however, since coming “out of the closet as far as global warming is concerned,” as Dyson sometimes puts it, there has been noise all around him. Chat rooms, Web threads, editors’ letter boxes and Dyson’s own e-mail queue resonate with a thermal current of invective in which Dyson has discovered himself variously described as “a pompous twit,” “a blowhard,” “a cesspool of misinformation,” “an old coot riding into the sunset” and, perhaps inevitably, “a mad scientist.”
Talis Connected Commons The Talis Connected Commons scheme is intended to directly support the publishing and reuse of Linked Data in the public domain by removing the costs associated with those activities. The scheme is intended to support a wide range of different forms of data publishing. For example scientific researchers seeking to share their research data
If you have MacBook Pro your external screen options just got a lot better. The ViDock Gfx from Village Tronic connects via the ExpressCard/34 slot and provides two DVI/VGA ports for driving two external monitors. So you can now hook up three external monitors: one to the built-in DVI port and then two to the ViDock for a display setup that'll rival Al's. The ViDock Gfx is only available for pre-order though no pricing information had been released (apparently you submit the form and they'll get back to you with pricing).
EUCALYPTUS - Elastic Utility Computing Architecture for Linking Your Programs To Useful Systems - is an open-source software infrastructure for implementing "cloud computing" on clusters. The current interface to EUCALYPTUS is compatible with Amazon's EC2 interface, but the infrastructure is designed to support multiple client-side interfaces. EUCALYPTUS is implemented using commonly available Linux tools and basic Web-service technologies making it easy to install and maintain.
odt2pml exports a Writer document into a "Palm Markup Language" (PML) tagged plain text file, ready to be processed by DropBook for eReader. odt2pml is WYSIWYG, within PML limitations: format your Writer document as you like, and eReader will show it with nearly the same formatting. That includes character and paragraph styles, page breaks, chapter headings, footnotes, frames, images and direct formatting (bold, italic, subscript, ...). Tables are not supported.
The newsgroup 'comp.soft-sys.matlab' is a forum for discussing issues related to the use of Matlab, the scientific calculation and visualization package from MathWorks Inc. This includes discussion of similar software packages like Xmath, Octave, RLab. Appropriate discussion in the group will include both general Matlab issues and platform-specific questions, and discussion comparing Matlab to other systems.
Energy efficiency is not related just to power (kWh) requirement, or cooling requirements, or performance (MIPs) - it pertains to all of these variables. And it's not just a data center issue - it is critical for organizations of all sizes and scopes. To get started improving your energy efficiency, use the Dell Data Center Capacity Planner to understand how your choices impact your energy use.
Dimdim Open Source Community Edition v4.5 “Liberty” is meant for developers, highly technical enthusiasts and for use in non-critical environments. It has the most of the features of Dimdim Enterprise and is based on open source streaming and media components. Dimdim Enterprise is based on commercial streaming and media components (Adobe Flash Server) and runs on top of our SynchroLive Communication Platform to ensure robust scalability and reliability and is fully supported and certified by Dimdim, Inc. The Open source community supports the Open Source Community Edition.
Software Requirements In order to run the applications in the JChem package Java Virtual Machine version 1.4.2 or later has to be installed. JChemManager (jcman) has more requirements. See the Administration Guide for details. Setting Environmental Variables Some environmental variables should be set manually. How to set environment variables ? Windows: Under Windows these variables can be set from the Control Panel. For example in the case of Windows XP: Start menu -> Control panel -> System-> Advanced -> Environment variables After changing the environment variables a new console (Command Prompt) should be opened so the changes can take effect. To check the current setting of an environment variables, type "set" in the console. To print a specific variable type "echo %VARIABLE_NAME%".
The Dude network monitor is a new application by MikroTik which can dramatically improve the way you manage your network environment. It will automatically scan all devices within specified subnets, draw and layout a map of your networks, monitor services of your devices and alert you in case some service has problems.
Cumulus depends on the Tagadelic module. Get it from http://drupal.org/project/tagadelic before installing Cumulus. Cumulus also requires a JS script called SWFObject. This script is licensed under the MIT license and can't be hosted on Drupal.org. So, you need to get the file from http://pratul.in/files/cumulus.js OR http://pratulkalia.googlepages.com/cumulus.js and put it in your Cumulus folder in your modules directory.
A number of DisplayLink-enabled products are now available to buy from some of the world's leading hardware manufacturers. To find out more about these products and how to purchase them, please follow the links below. If you are interested in buying DisplayLink ICs, please visit our distributors page.
A social bookmarking web site could change the way you do your job! Bookmarking services store your saved web pages (bookmarks) on a site that you can access from any computer. These services can free you from being tied to the one computer that holds your bookmarks, or favorites, on the browser. No longer will you have to scribble web addresses on notepads or email yourself URLs to remember an interesting site from school to home. Sharing web sites and your thoughts about the sites with colleagues can be accomplished with the click of a button.
Server Fault is a collaboratively edited question and answer site for system administrators and IT professionals – regardless of platform. It's 100% free, no registration required.
phpMyEdit generates PHP code for displaying/editing MySQL tables in HTML. All you need to do is to write a simple calling program (a utility to do this is included). It includes a huge set of table manipulation functions (record addition, change, view, copy, and removal), table sorting, filtering, table lookups, and more.
SIMILE is focused on developing robust, open source tools that empower users to access, manage, visualize and reuse digital assets. Learn more about the SIMILE project.
This is an interesting observation suggesting tying IE to the OS was a fatal mistake, or at the very least, one that will cost them them with regards to playing nimbly in an OS-less world. Annotated link http://www.diigo.com/bookmark/http%3A%2F%2Fwww.techcrunch.com%2F2008%2F09%2F01%2Fmeet-chrome-googles-windows-killer
Several months ago I created an article with 5 APT (Advanced Packaging Tool) tips for both Debian and Ubuntu available here. APT is the package manager in Debian and Debian-based distributions, like Ubuntu. Here's part two of that article, with 5 more tips and tricks for APT.
Mind map galleries are an excellent place to learn how others are utilizing mind mapping software. These websites make it possible for users of mind mapping software to easily upload and share their maps with others, either in a public gallery or in a private, password protected area. In the latter case, you can use these services as an online repository for your maps.
For Apple, he outlined, the end game isn't commercial success. "Apple's goal isn't to make money. Our goal is to design and develop and bring to market good products," he explained. "We trust as a consequence of that, people will like them, and as another consequence we'll make some money. But we're really clear about what our goals are." This focus, he continued, has driven Apple to produce only a small number of high quality products. "We try not to bring out another product that's just different," he said. "'Different' and 'new' is relatively easy. Doing something that's genuinely better is very hard."
Last week we discussed how the current era of the Web is evolving. One of the concepts we noted was Linked Data, an idea whose time has come in 2009. Sir Tim Berners-Lee, the inventor of the Web, gave a must-view talk at the TED Conference earlier this year, evangelizing Linked Data. He said that Linked Data was a sea change akin to the invention of the WWW itself. We've gone from a Web of documents, via the WWW, to a Web of data. Berners-Lee is now on a crusade for everyone from government departments, to individuals, to open up their data and put it on the Web - so that others can link to it and use it. In this post we give a high-level overview of Linked Data. Read on to stop and smell the roses. A great place to start to understand Linked Data is Sir Tim's TED talk, embedded below. It's just over 15 minutes and highly recommended if you want to grok where the Web is headed. The slides are also available.
How-To: Install KDE 4.3 RC1 in Kubuntu 9.04 Jaunty Jackalope The first release candidate of KDE 4.3, the next major version of KDE4, was put out on July 1st and comes with new features and a lot of Plasma improvements and bug fixes. In this short tutorial I'll show you how to install KDE 4.3 in your Kubuntu 9.04 machine with the help of the Kubuntu Backports PPA (Personal Packages Archive) repositories.
In this article we'll be using the awesome open-source nmap network scanning engine. In this example I will be preforming my scan from a Linux box. However you can use other OSs.
eBox Platform eBox Platform is a unified network server that offers easy and efficient computer network administration for SMBs. It can act as a Gateway, an Infrastructure Manager, a Unified Threat Manager, an Office Server, a Unified Communication Server or a combination of them. These functionalities are tightly integrated, automating most tasks, avoiding mistakes and saving time for system administrators. eBox Platform is released under the GNU General Public License (GPL) and runs on top of Ubuntu GNU/Linux. eBox Technologies S.L. is the company behind eBox Platform and all the technologies and services related to them, providing a comprehensive set of deployment, support and managed services for the Global eBox Partner Network.
Wolfram Alpha to open data feeds Wolfram Alpha, a project from the makers of math software Mathematica, will soon be opening up its data sets, opening up new possibilities for data mash ups
NxTop delivers secure, controlled desktops to any PC in the form of a virtual desktop or a virtual laptop, greatly reducing the cost and complexity of desktop management and patch management while improving desktop environment security. NxTop provides numerous advantages over traditional VDI solutions.
Future of the Screen: After the CRT, a Display Deluge By Jon Stokes | 09.02.09 For the seven decades following the debut of television at the 1933 Chicago World's Fair, the term "cathode ray tube" (CRT) was virtually synonymous with "display." Shortly after the turn of the millennium, liquid crystal display (LCD) technology began to replace the venerable CRT in desktop-computer applications, and by the middle of the decade LCD was rapidly squeezing the CRT out the television market that the latter had invented. Just two years ago, it seemed obvious that the display space was in the final stages of a relatively straightforward evolutionary shift, with LCD replacing the CRT in the same way that the gas-powered automobile had replaced the horse and buggy.
At Backblaze, we provide unlimited storage to our customers for only $5 per month, so we had to figure out how to store hundreds of petabytes of customer data in a reliable, scalable way—and keep our costs low. After looking at several overpriced commercial solutions, we decided to build our own custom Backblaze Storage Pods: 67 terabyte 4U servers for $7,867. In this post, we’ll share how to make one of these storage pods, and you’re welcome to use this design. Our hope is that by sharing, others can benefit and, ultimately, refine this concept and send improvements back to us. Evolving and lowering costs is critical to our continuing success at Backblaze. Below is a video that shows a 3-D model of the Backblaze Storage Pod. Continue reading to learn the exact details of the design
The purpose of our centre is to provide a national focus for research and development into curation issues and to promote expertise and good practice, both national and international, for the management of all research outputs in digital format. Find out more about the DCC.
ConVirt provides enterprise-class management of open source virtualization platforms, making open source virtualization an extremely viable and cost-effective choice for enterprises. ConVirt lets you manage the complete lifecycle of Xen and KVM virtualization platforms from a central, GUI dashboard. With sophisticated template-based provisioning, centralized monitoring, configuration management and administration, IT administrators can now automate the entire virtual machine lifecycle on open source platforms. ConVirt is an open source product backed by commercial, enterprise-class support, so you get the best of both worlds: a sophisticated, commercially-backed solution that is also highly cost effective. Annotated link http://www.diigo.com/bookmark/http%3A%2F%2Fwww.convirture.com%2Fproducts.html
ZDNet's Dana Blankenhorn reports today on a new open source navigation project launched by European GPS company TomTom that adds additional functionality to navigational devices, regardless of the make or model. The OpenLR project aims to put navigation data on top of a GPS unit's existing database so drivers can access local traffic, weather, and other useful information as they travel.
The information you keep in Google apps like Gmail, GCal, Reader, and Voice doesn't just live in one place. Check out a few easy but non-obvious ways to plug different Google apps together and share their data and features.
Ever since Lifehacker turned me on to Dropbox, it's become one of the most essential pieces in my daily workflow. Sure it syncs files extremely well, but Dropbox is an excellent tool for so much more.
Ooh, shiny! A new machine, and it has a Core 2 Quad processor! Everything's going to run so much faster now! Or is it? When you have four processor cores, does that mean everything runs four times faster? Or is everything still running on the first CPU and ignoring the others? How do you find out, and how do you make the best use of that shiny new multi-core processor?
As computational scientists are confronted with increasingly massive datasets from supercomputing simulations and experiments, one of the biggest challenges is having the right tools to gain scientific insight from the data. One common method for gaining insight is to use scientific visualization, which transforms abstract data into more readily comprehensible images using advanced computer software and computer graphics. But the ever-growing size of scientific datasets presents a significant challenge to modern scientific visualization tools. As a result, there is a great deal of motivation to explore use of large, parallel resources, such as those at the U.S. Department of Energy's (DOE) supercomputing centers, to take advantage of their vast computational processing power, I/O bandwidth and large memory footprint.
With Fibre Channel too expensive for most customers, the Internet Small Computer Systems Interface (iSCSI) protocol is poised to become the standard for architecting dedicated storage solutions. Small-to-medium businesses (SMBs) and enterprise customers alike should prepare for the inevitable adoption of iSCSI by encouraging their information technology staff to learn how to install and configure iSCSI today.
Ben Fry, well-known for Processing and plenty of other data goodness, announced his most recent piece, On the Origin of Species: The Preservation of Favoured Traces, made possible by The Complete Work of Charles Darwin Online.
The truth is, most online readers don’t care much about grammar, spelling and punctuation as long as they get the information they need. With that said, good grammar does build trust in your organization. So does proper spelling — so proofread your text and ask a professional copywriter to look it over if at all possible.
Building and Promoting a Linux-based Operating System to Support Virtual Organizations for Next Generation Grids (2006-2010). The emergence of Grids enables the sharing of a wide range of resources to solve large-scale computational and data intensive problems in science, engineering and commerce. While much has been done to build Grid middleware on top of existing operating systems, little has been done to extend the underlying operating systems to enablee and facilitate Grid computing, for example by embedding important functionalities directly into the operating system kernel.
The Boot Process From the moment a user turns on a Mac OS X system to beyond the time the login window appears, Mac OS X executes a boot sequence that readies the system for use. If you provide system services to all users, you might need to execute some code during this process. The following sections explain the basic boot sequence and the places where your code can tie into it.
In Mac OS X v10.4 Tiger, Apple introduced a new system startup program called launchd. The launchd daemon takes over many tasks from cron, xinetd, mach_init, and init, which are UNIX programs that traditionally have handled system initialization, called systems scripts, run startup items, and generally prepared the system for the user. And they still exist on Mac OS X Tiger, but launchd has superseded them in many instances. These venerable programs are widely used by system administrators, open source developers, managers of web services, even consumers who want to use cron to manage iCal scheduling, and they can still be called with launchd. The launchd daemon also provides a big performance boost to your system. At any given time, only those daemons that are actually used are launched
Need to monitor Linux server performance? Try these built-in command and a few add-on tools. Most Linux distributions are equipped with tons of monitoring. These tools provide metrics which can be used to get information about system activities. You can use these tools to find the possible causes of a performance problem. The commands discussed below are some of the most basic commands when it comes to system analysis and debugging server issues such as: Finding out bottlenecks. Disk (storage) bottlenecks. CPU and memory bottlenecks. Network bottlenecks.
Edit the following file to fix this problem Add or modify text as follows: # vi /etc/sysctl.conf net.ipv4.tcp_tw_reuse = 0 net.ipv4.tcp_tw_recycle = 0 # sysctl -p The above command will help the new settings to take effect.
SystemImager is software which automates Linux installs, software distribution, and production deployment. SystemImager makes it easy to do automated installs (clones), software distribution, content or data distribution, configuration changes, and operating system updates to your network of Linux machines. You can even update from one Linux release version to another! It can also be used to ensure safe production deployments. By saving your current production image before updating to your new production image, you have a highly reliable contingency mechanism. If the new production enviroment is found to be flawed, simply roll-back to the last production image with a simple update command! Some typical environments include: Internet server farms, database server farms, high performance clusters, computer labs, and corporate desktop environments.
This tutorial will cover the basics of the GNOME desktop environment and application framework. GNOME uses the GTK and GNOME API to provide the software developer interfaces.
Many biomedical terminologies, classifications, and ontological resources such as the NCI Thesaurus (NCIT), International Classification of Diseases (ICD), Systematized Nomenclature of Medicine (SNOMED), Current Procedural Terminology (CPT), and Gene Ontology (GO) have been developed and used to build a variety of IT applications in biology, biomedicine, and health care settings
If you've never abandoned your 4th grade obsession with the night sky (and who has?), Star Viewer is a web-based tool for peeking at some of the most interesting and vivid sights in the night sky. Star Viewer is not as complicated as, say, the previously mentioned open-source and feature-rich astronomy tool Stellarium
The Nikon system of digital single-lens reflex (SLR) bodies and lenses is a popular choice among serious photographers worldwide. This page makes it easy to shop for Nikon digital bodies and Nikkor lenses. Every component manufactured by Nikon is covered, plus a few exceptionally good third-party components. If you are new to photography, you might want to start with my article "Building a Digital SLR System".
"apt-fast and Axel: Roughly 26x Faster apt-get Installations and Upgrades Monday, 02 June 2008 Updated 12/17/2009 Since apt-fast has gotten popular due to acolades in the Ubuntu community and from mention in Linux Format, I've gotten lots of hits, and a few bugs. I believe that apt-fast is now golden, though, thanks to travisn000 on the PCLinuxOS forums. From now on, you can find the latest version "source" (it's just a shellscript) at http://www.mattparnell.com/linux/apt-fast/ ... the latest version will always be the one named "apt-fast.sh." Yes, this will work for any distro that uses apt-get, and the concept should work most of the others...it may even be as simple as removing wget and replacing it with a symlink to axel. Since I last updated this post, I have started using Archlinux, whose package manager has a system in place that allows any download manager to be used, for example."
In 2007, the National Center for Genome Resources (NCGR) in Santa Fe, New Mexico, best known for the development of bioinformatics tools, established the Schizophrenia Genome Project. Taking Illumina GA sequence data, NCGR scientists used a combination of homegrown Alpheus software and JMP Genomics (from SAS) to develop a streamlined workflow for the acquisition, analysis, and management of huge amounts of next-generation sequencing data—in this case, mRNA.
Nmap Network Scanning is the official guide to the Nmap Security Scanner, a free and open source utility used by millions of people for network discovery, administration, and security auditing. From explaining port scanning basics for novices to detailing low-level packet crafting methods used by advanced hackers, this book by Nmap's original author suits all levels of security and networking professionals. The reference guide documents every Nmap feature and option, while the remainder demonstrates how to apply them to quickly solve real-world tasks. Examples and diagrams show actual communication on the wire. Topics include subverting firewalls and intrusion detection systems, optimizing Nmap performance, and automating common networking tasks with the Nmap Scripting Engine.
Red5 is an Open Source Flash Server written in Java that supports: * Streaming Video (FLV, F4V, MP4) * Streaming Audio (MP3, F4A, M4A) * Recording Client Streams (FLV only) * Shared Objects * Live Stream Publishing * Remoting
Last year, some of our commenters steered me toward ImgBurn as a Nero alternative, and it's been my CD and DVD recording app of choice ever since. It's an excellent lightweight program, handles just about every kind of disc-related task imaginable, and it's totally free.
The Street's Scott Moritz reports that Apple is planning to release its long-rumored tablet computer "in time for the holidays" later this year. While Apple is reportedly still deciding on a sales model for the new device, Moritz's source reports that initial plans include subsidies from Verizon in order to lock in users for multi-year wireless data contracts while bringing down the upfront cost to consumers for the device, which is expected to carry a premium price tag.
"This project," said Sergiu Sanielevici, PSC director of scientific applications and user support, who also leads user support and services for the TeraGrid, "exemplifies how powerful systems like Pople can open doors to data-mining and data-centric research in fields not traditionally associated with HPC, such as the social sciences, and make it possible to get answers that would otherwise be impractical or impossible." PSC supported this project through the NSF TeraGrid program, which allocates large-scale computing resources free to researchers at U.S. universities on a peer-review proposal basis.
On June 23, 2009, the U.S. National Library of Medicine® (NLM®) released DOCLINE 4.0. DOCLINE is the NLM automated interlibrary loan requesting system. The system provides nearly 3,000 health science libraries in the National Network of Libraries of Medicine® (NN/LM®), Canada, Mexico, and other selected international libraries, with the means to request the interlibrary loan of biomedical literature.\n\nThe new version contains a key enhancement of the Serial Holdings module requested by users. It also introduces simplified serials title searching, modified screen designs to improve the display and editing of serial holdings records, search filtering by acquisition status, and a new function called Show All My Holdings which allows authorized users to display a list of all of their library's holdings for efficient review and update.\n\n
Score one for Linux developers. Andrew Tridgell, one of the lead developers on the Samba project, may have developed a workaround which will bypass a Microsoft patent on the ubiquitous FAT, VFAT and FAT32 file systems
Seaside is a Web application framework gaining popularity among developers. Seaside is similar to other frameworks, such as Catalyst (Perl), Rails (Ruby), and Cocoon (Java), but distinguishes itself by being written in Smalltalk, as a continuation-based framework.
Collaboration on End-to-End Research Cyberinfrastructure Platform San Diego and Cypress, CA, July 22, 2009 -- National LambdaRail (NLR), the coast-to-coast, high-performance network owned by the research and education community, and the California Institute for Telecommunications and Information Technology (Calit2), a University of California, San Diego and University of California, Irvine partnership, have agreed to form a collaboration, the goal of which is to help researchers and institutions around the country construct end-to-end research cyberinfrastructure platforms.
Many enterprise data centers rely on Ethernet for their LAN and data traffic, and on Fibre Channel (FC) networks for their storage infrastructure. With increased adoption of 10GbE in the data center, the availability of Fibre Channel over Ethernet (FCoE), and new lossless 10GbE technologies, it is now possible to consolidate FC SAN storage data flows with LAN and data traffic onto the same unified Ethernet cable. Network convergence will enable enterprises to preserve their existing investments in FC storage, reduce data center costs and complexity, and simplify network management.
Save a file you edited in vim without the needed permissionsI often forget to sudo before editing a file I don't have write permissions on. When you come to save that file and get the infamous "E212: Can't open file for writing", just issue that vim command in order to save the file without the need to save it to a temp file and then copy it back again. :w !sudo tee % Annotated link http://www.diigo.com/bookmark/http%3A%2F%2Fwww.commandlinefu.com%2Fcommands%2Fbrowse%2Fsort-by-votes
Linux Professional Institute (LPI) exam prep Self-study tutorials to help you learn Linux fundamentals and prepare for system administrator certification
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