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- Welcome to the Ubuntu Manpage Repository This site contains hundreds of thousands of dynamically generated manuals, extracted from every package of every supported version of Ubuntu, and updated on a daily basis. Traditionally, manpages are browsed on the command line. This project renders all such manuals included in Ubuntu in an HTML, web-browsable format.
- Markdown is a text-to-HTML conversion tool for web writers. Markdown allows you to write using an easy-to-read, easy-to-write plain text format, then convert it to structurally valid XHTML (or HTML). Thus, “Markdown” is two things: (1) a plain text formatting syntax
- NOTATIONAL VELOCITY is an application that stores and retrieves notes. It is an attempt to loosen the mental blockages to recording information and to scrape away the tartar of convention that handicaps its retrieval. The solution is by nature nonconformist.
- Join the ecosystem. Simplenote replaces the Notes app on your iPhone, iPod touch, or iPad. When you download SImplenote, you get free access to our web app and a variety of desktop apps, so you can access your notes from anywhere. Simplenote just works, and it works fast. You don't need to think about what notes to sync, or when. All you need to do is write, and let Simplenote take care of the rest.
- Computerworld - High-performance computing (HPC) has almost always required a supercomputer — one of those room-size monoliths you find at government research labs and universities. And while those systems aren’t going away, some of the applications traditionally handled by the biggest of Big Iron are heading to the desktop. One reason is that processing that took an hour on a standard PC about eight years ago now takes six seconds, according to Ed Martin, a manager in the automotive unit at computer-aided design software maker Autodesk Inc. Monumental improvements in desktop processing power, graphics processing unit (GPU) performance, network bandwidth and solid-state drive speed combined with 64-bit throughput have made the desktop increasingly viable for large-scale computing projects.
- "To Set the BIOS for Linux 1. Power on the workstation. 2. Press the F2 key at the Sun logo screen to enter the BIOS Setup menu. 3. Go to Advanced > Integrated Devices. 4. If necessary, change the Configured SATA as option to AHCI. 5. Press the F10 key to save your changes and exit the BIOS."
- Storage Vendor
- "Unix/Linux Administration Logical Volume Management Guide"
- Rocks adds a vastly expanded solutions layer (Rocks HPC, Rocks Cloud, Rocks Rolls) and enterprise-class support, which transforms the leading open source cluster distribution into a production-ready cluster operating environment suitable for data centers of all shapes and sizes. Clustercorp also partners with the industry's leading workload management providers to offer Rocks MOAB, Rocks LSF, and Rocks SGE. Purchase turnkey Rocks clusters from a long list of reliable hardware partners including HP, Dell, Cray, Silicon Mechanics, and more.
- ScaleMP, a maker of virtualization and aggregation software that allows a cluster of x64 servers to look like a big, bad, symmetric multiprocessing (SMP) shared-memory system to operating systems and selected classes of applications, is going downstream to target SMBs and upstream to chase cloud infrastructure providers.
- an Miller joined Cray in February 2008 and currently heads up Cray’s Productivity Solutions group with the recently introduced Cray CX1 desk side supercomputer – an Intel Cluster Ready product. Mr. Miller also leads Cray’s corporate marketing organization. Prior to joining Cray, he served as the Vice President of Polyserve Software at HP and as Vice President of Worldwide Sales for PolyServe prior to its acquisition by HP. Before joining PolyServe, Mr. Miller was Vice President of Worldwide sales for IBM High End xSeries Servers where he worked for both IBM xSeries and pSeries organizations, with a particular focus on marketing and sales for high end Intel based systems. Prior to IBM, he was Vice President of Global Marketing for Sequent Computer Systems, and Vice President Asia Pacific. Miller has also worked for Software AG as Senior Vice President Asia Pacific, and for Unisys in many capacities, ending as General Manager for Asia South. Mr. Miller is a Graduate of London University.
- Videos related to Cray XC
- Giving users more flexibility in how they configure systems to attack various workloads was a big thread running through SC09 last year. At the show, we took at look at three different companies who are, in one way or another, providing large system images. (Click to see our posts on ScaleMP, 3Leaf, and SGI.)
- James River Technical ScaleMP solutions, including Cray and Fusion
- Cray CX1 Specifications
- Engineers, scientists, researchers and other workstation users are continually challenged with more complex problems and shorter deadlines in which to solve them. The Cray CX1-iWS™ solution addresses both of these issues by allowing larger models and simulations to be worked within the workstation environment, eliminating the need to move the problem to an external shared resource cluster, and providing an easy to setup solution.
- FUSION1200® is a scalable 8 to 32-processor SMP system for the High Performance Technical Computing (HPTC) market. Available in both deskside and 19-inch rack-mount design, the FUSION1200® is a scalable alternative to traditional RISC based servers. FUSION1200® Series is an enterprise-class system for an IT department looking to leverage the benefits of Intel® standards in a data center. With the flexibility to grow from 8 to 32 Intel® Xeon® processors (quad or dual core), the FUSION1200® Series scales beyond conventional Intel® based platforms while delivering superior price-performance compared to traditional high-end servers. The SMP operational model of the FUSION1200® provides reduced management costs compared to clusters. This Intel® Xeon® processor based server, supporting Intel® Extended Memory 64 Technology and the ScaleMP® vSMP architecture, is the ideal platform for clients with applications that require high processor count and large shared memory.
- Numascale's SMP Adapter is an HTX card made to be used with commodity servers with AMD processors that feature an HTX connector to its HyperTransport interconnect.
- Linux Professional Institute (LPI) exam prep Self-study tutorials to help you learn Linux fundamentals and prepare for system administrator certification
- 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
- ransforming your Installation Manually into a Live DVD/CD
- Working on a little script the other day I had the need to determine if the input to the script was coming from a pipe or from the terminal. Seems like a simple enough thing to determine but nothing jumped immediately to mind and a quick internet search didn't help much either. After a bit of pondering I came up with two solutions: the stat command and using information from the proc file system.
- "PNFS prototype design"
- NFS is a critical service in many organizations, and even a simple error can lead to major problems. NFSv4 promises to bring several key new features, but clearly it will be imperative to users that the new version of NFS be robust, that it perform well, and that it interoperate easily with other technologies.
- The remote, snow-swept expanses of northern Sweden are an unlikely place to begin a story about cutting-edge genetic science. The kingdom's northernmost county, Norrbotten, is nearly free of human life
- 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.
- Bash Completion hacks
- Universal storage connectivity for your existing servers and storage devices. The Data Transport Processor (DTP) routes disk and tape SCSI commands, and the associated block data transfers, between servers and storage devices that have SCSI, FibreChannel, or TCP/IP (iSCSI) interfaces. The DTP can be cabled to a server's SCSI adapter (as a Target), and to SCSI Disk Arrays or Tape Libraries (as an Initiator), AND to a FibreChannel HBA (point-to-point), or to a FC-Arbitrated Loop, or to a FC switch, AND to an Ethernet NIC, or switch. That is, the DTP allows you to connect ANY of your existing servers, whether they are SCSI-cabled, FibreChannel-cabled, or Ethernet-cabled (iSCSI) to ANY of your existing SCSI-command disk and tape devices, whether SCSI-cabled or FibreChannel-cabled or Ethernet-cabled (iSCSI).
- AlfaEbooks allows you quickly scan your computer to find ebooks. You can select specific folders on your PC and file types. AlfaEbooks will automatically detect books, extract ISBN and create a book list that you can check, update and save to the database. It will also find duplicates if found file already exists in the database. You can also use this powerful tool to actualize your e-library when you move books to another drive or DVD.
- Alert Manager was created to run a (alert) command, monitor the status of that command's output, and guarantee that if something goes wrong it won't go unnoticed. Alert Manager has been successfully deployed in several fortune 500 companies providing guaranteed alert delivery and command execution. It has a very flexable configuration file that allows creation of "alert chains" - chains of commands, each with their own fallback command, failure command, timeout, retry counter, and other advanced options. It has a method for passing messages from the command line into the various commands defined in the configuration file and many other useful features. Alert Manager is licensed under the GPL.
- Logdog is a tool that monitors messages passing through syslogd and takes action based on key words and phrases. Logdog has a configuration file which allows you to specify a list of key words or phrases to alert on, and a list of commands that can be run when those words are encountered. Logdog is licensed under the GPL.
- swatch (the “Simple WATCHer”) does. swatch, written 100% in Perl, monitors logs as they're being written to and takes action when it finds something you've told it to look for. This simple, flexible and useful tool is a must-have for any healthily fearful system administrator.
- The goal of this document is to describe the use of UNIX syslog as a logging and auditing mechanism for operating systems and applications
- Index of /ubuntu-ports/dists/karmic/main/installer-sparc/current/images/netboot
- Summary: Vimscript provides excellent support for operating on collections of data, a cornerstone of programming. In this third article in the series, learn how to use Vimscript's built-in lists to ease everyday operations such as reformatting lists, filtering sequences of filenames, and sorting sets of line numbers. You'll also walk through examples that demonstrate the power of lists to extend and enhance two common uses of Vim: creating a user-defined function to align assignment operators, and improving the built-in text completions mechanism.
- Using gnuplot to display data in your Web pages David Tansley (david.tansley@btinternet.com), System Administrator, Ace Europe Summary: Use gnuplot to dynamically generate Web pages from your system using raw data to provide graphic images. This raw data typically contains MIS-related information, on system performance, storage, or database growth.
- Mathematics, rightly viewed, possesses not only truth, but supreme beautya beauty cold and austere, like that of sculpture, without appeal to any part of our weaker nature, without the gorgeous trappings of painting or music, yet sublimely pure, and capable of a stern perfection such as only the greatest art can show. The true spirit of delight, the exaltation, the sense of being more than Man, which is the touchstone of the highest excellence, is to be found in mathematics as surely as in poetry.
- A Performance Comparison of NFS and iSCSI for IP-Networked Storage
- Data sharing is a must in today's modern computing world. When the data requirements include allowing a cluster of servers to access a common storage pool, Red Hat GFS is the answer for simplifying your data infrastructure, minimizing storage costs, adding storage on the fly, and achieving maximum uptime. A cluster file system like Red Hat GFS can be used with an IP network block-sharing protocol like iSCSI to provide scalable file serving at low cost. Network File System (NFS) is a common shared storage solution utilized by many infrastructures. However, in some instances, this solution does not scale. How do GFS and NFS compare? This article explains.
- Performance Comparison of iSCSI and NFS IP Storage protocols.
- snimpy interactive SNMP tool with Python LoginPreferencesHelp/GuideRegisterAbout Trac WikiTimelineBrowse SourceView TicketsNew TicketSearch Start PageIndexHistoryLast Change Introduction Snimpy is a Python-based tool providing a simple interface to build SNMP queries. This interface aims at being the most Pythonic possible: you grab scalars using attributes and columns are like dictionaries. Here is a very simplistic example that allows to display the routing table of a given host:
- Clusters, Parallel Computing and Workflow Management in Bioinformatics
- Spacewalk Installation Instructions Setting up Spacewalk repo Additional repos
- Free
- The benchmark is the SPECsfs2008 CIFS file access benchmark. There is a similar benchmark for NFS which is much more popular in terms of supplier submissions, with BlueArc, HP, Isilon, NetApp and others reporting results. Annotated link http://www.diigo.com/bookmark/http%3A%2F%2Fwww.channelregister.co.uk%2F2010%2F01%2F27%2Femc_cifs_benchmark
- As computers become more powerful, they are better able to provide answers to increasingly complex scientific questions. Unfortunately, answering these questions comes with significant costs: scientists become intimately familiar with hardware platforms, learn specialized languages and data formats to efficiently represent results, and actively shepherd their simulation runs to identify and correct potential problems as early as possible. In practice, this means computational scientists spend significantly more time managing their data and babysitting their runs rather than doing science. Annotated link http://www.diigo.com/bookmark/http%3A%2F%2Fwww.scientificcomputing.com%2Farticle-hpc-Scientific-Process-Automation-Improves-Data-Interaction-082809.aspx
- Swivel is a website where people share reports of charts and numbers. Swivel is free for public data, and charges a monthly fee to people who want to use it in private.
- The long rumored (and we mean long rumored) Apple tablet has finally arrived. Is the iPad as "magical" as the company hopes? Perhaps not, but there is a lot to this story beyond the obvious: A4 chip? Micro SIM? What's the deal with Flash? Since we know you're looking for the straight dope on the big reveal, and since this is what Engadget does best, we've thoughtfully compiled the last twenty-four hours worth of coverage in something we like to call a "list." Now sit back, put your feet up, and take it all in. Annotated link http://www.diigo.com/bookmark/http%3A%2F%2Fwww.engadget.com%2F2010%2F01%2F28%2Fapple-ipad-launch-day-roundup-everything-you-need-to-know
- dstat - versatile tool for generating system resource statistics
- 5. Optimizing NFS Performance Getting network settings right can improve NFS performance many times over -- a tenfold increase in transfer speeds is not unheard of. The most important things to get right are the rsize and wsize mount options. Other factors listed below may affect people with particular hardware setups.
- Nagios Core 3.x Documentation Table of Contents
- Modular Object-Oriented Dynamic SpreadSheet (Moodss) is a graphical monitoring application with a complete graphical user interface (GUI) to conveniently monitor network services and send alerts when thresholds are crossed. Moodss is a deceptively simple tool that could characterized as a dynamic network-aware spreadsheet. It can poll devices using the Simple Network Management Protocol (SNMP), receive and send SNMP traps, and perform network service checks via Nagios plug-ins. It can optionally be used with the Modular Object-Oriented Multi-Purpose Service (Moomps) monitoring daemon to delegate monitoring tasks to a separate lightweight application after all thresholds have been defined with Moodss. The best way to see how Moodss operates is to walk through some examples so that’s what I’ll do in the steps below. I wish to give special thanks to Jean-Luc for his valuable assistance with Moodss on OS X, and for writing such a fine program.
- hi Follow below steps to setup check_dns it may be helpful to you.
- "Make Open Source Monitoring Easy Lilac is a configuration tool for Nagios, the industry standard in open source monitoring. Lilac makes configuration easy with simple to use screens and tools for auto-discovery and importing of existing configurations. Lilac is an open source application under the GPLv2 license. It is a project provided and maintained by Lilac Networks, a provider of quality support and services for open source monitoring solutions. "
- "LVM cannot stop/remove LV, cannot stop/delete dead RAID situation. Hi, I am having an issue with LVM and RAID in some failure cases: It seems that any operations on a LVM LV (lvchange, lvremove, etc..), require this LV's metadata to be readable. In case a LVM LV is setup ontop of a RAID 0, or a RAID 5 for instance, if two disks are lost from the RAID array, the array dies. Now that the array is dead, I would like to recreate a new RAID 0 or 5 using the remaining alive disks and some new ones. For this reason, I'd like to stop the previous dead RAID using mdadm. However, because the LVM LV does still exists, it seems to have a handle on the dead RAID, as shon below: # /opt/soma/bin/mdadm/mdadm --stop /dev/md/d0 raid manager: fail to stop array /dev/md/d0: Device or resource busy Perhaps a running process, mounted filesystem or active volume group?"
- Here's a dirty script I wrote to install nagios and Lilac on a clean CentOS 5.4 install. This script doesn't care about anyone other than itself (it'll change the mysql password for instance) so may not be entirely perfect for your needs.
- How To Measure Linux Filesystem I/O Performance With iozone
- Roche Cluster vendor
- 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.
- Central Loghost Mini-HOWTO This page is simply a collection of open source tools you can use to glue together your own centralized (syslog) loghost. Included are example configuration settings so that you can configure your loghost in a manner similar to mine. There is very little that you need to read and understand in order to use these tools. Also, these tools are widely used and therefore easy to get help with on internet mailing lists. I established a centralized location for syslog collection in order to facilitate: Log reporting real time alerting periodic (several times per day) summary reporting Log storage long term archival for possible later analysis Tools used: UNIX hosts (Linux and Solaris) Modified logcheck script(s). Syslog-NG Swatch though I'm slowly moving to SEC, this page will be updated once I've completely switched Splunk for a GUI interface Stunnel
- Working with SEC- the Simple Event Correlator Jim Brown jbrown@thrupoint.net Copyright © 2003 by Jim Brown November 23, 2003 SEC is a powerful event correlation engine written entirely in Perl that is capable of handling a wide variety of event correlation tasks. This article presents a range of examples, from simple to complex, using SEC for event correlation tasks.
- Central Loghost Mini-HOWTO This page is simply a collection of open source tools you can use to glue together your own centralized (syslog) loghost. Included are example configuration settings so that you can configure your loghost in a manner similar to mine. There is very little that you need to read and understand in order to use these tools. Also, these tools are widely used and therefore easy to get help with on internet mailing lists. I established a centralized location for syslog collection in order to facilitate: Log reporting real time alerting periodic (several times per day) summary reporting Log storage long term archival for possible later analysis Tools used: UNIX hosts (Linux and Solaris) Modified logcheck script(s). Syslog-NG Swatch though I'm slowly moving to SEC, this page will be updated once I've completely switched Splunk for a GUI interface Stunnel
- Tools for running in a MultiTail window (with '-l')
- This page provides a basic tutorial on understanding, creating and using regular expressions in Perl. It serves as a complement to the reference page on regular expressions perlre. Regular expressions are an integral part of the m//, s///, qr// and split operators and so this tutorial also overlaps with "Regexp Quote-Like Operators" in perlop and "split" in perlfunc.
- "UbiGraph is a tool for visualizing dynamic graphs. The basic version is free, and talks to Python, Ruby, PHP, Java, C, C , C#, Haskell, and OCaml. "
- The SSH File System for MacFUSE
- "Orca is a tool useful for plotting arbitrary data from text files onto a directory on a Web server. Orca Example Plots"
- David is the resident Leica expert at Dale Photo
- Learn how to take and edit digital photos using interactive visual tutorials, ranging from camera basics to advanced tips.
- Any system administrator worth their salt has some kind of system for collecting and maintaining information about all the systems they're responsible for. Gathering that info by hand, especially when the systems are inherited, can be time-consuming. Or you could try out boxinfo, a Perl script that gathers most or all of the information you'd want in a few easy steps. Boxinfo is simple to run, just run it on any Linux system that has Perl and it will look for information about the disk space, processor, memory, network interfaces, mounted disks, versions of utilities, and general system environment. Once finished, it prints out an HTML page or page in Wikimedia format, and a debug file that shows all commands run and the output. This can be useful to identify Perl modules you might be missing to gather information.
- How check_mk monitors logfiles The monitoring of the contents of logfiles is an especially challenging task for a Nagios administrator. The key difficulty is, that log messages are event based by nature - whereas Nagios is based on states. Check_mk's logwatch mechanism overcomes this problem by defining the critical state for a logfile as "no unacknownledged critical log messages". At the beginning of the monitoring a logfile starts in the state OK - regardless of its contents. When a new critical message is seen in the file, it is stored on the Nagios server for reference by the administrator. The state of the logfile changes to CRITICAL and stays in that state unless the administrator acknowledges the messages. New critical messages arriving while in CRITICAL state are simply being stored and do not change the state. Check_mk provides a webpage logwatch.php that displays log messages and allows the delete (and thus acknowledge) them in an easy way:
- There are a number of times in which you find yourself needing performance data. These can include benchmarking, monitoring a system's general heath or trying to determine what your system was doing at some time in the past. Sometimes you just want to know what the system is doing right now. Depending on what you're doing, you often end up using different tools, each designed to for that specific situation. Unlike most monitoring tools that either focus on a small set of statistics, format their output in only one way, run either interatively or as a daemon but not both, collectl tries to do it all. You can choose to monitor any of a broad set of subsystems which currently include buddyinfo, cpu, disk, inodes, infiniband, lustre, memory, network, nfs, processes, quadrics, slabs, sockets and tcp.
- HowTo: Create sar Graphs With kSar [ Identifying Linux Bottlenecks ]
- "Andreas Bick, composer and sound artist based in Berlin, Germany, writes about sound related things (forgive wrong spellings and twisted grammar). Silent listening is about the fringes of music, the periphery where music turns into sheer sound - concrete, wild, sometimes stunningly beautiful. Visit me at www.andreas-bick.de and facebook"
- Building a digital SLR system: Looking at the Canon Digital Rebel XTi, Nikon D40, Nikon D80, and EOS 5D cameras
- "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."
- 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".
- 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
- This guide explans how you can install and use KVM for creating and running virtual machines on an Ubuntu 9.10 server. I will show how to create image-based virtual machines and also virtual machines that use a logical volume (LVM). KVM is short for Kernel-based Virtual Machine and makes use of hardware virtualization, i.e., you need a CPU that supports hardware virtualization, e.g. Intel VT or AMD-V. I do not issue any guarantee that this will work for you!
- Regular expressions is the term used for a codified method of searching invented or defined by the American mathematician Stephen Kleene. The syntax (language format) described is compliant with extended regular expressions (EREs) defined in IEEE POSIX 1003.2 (Section 2.8). EREs are now commonly supported by Apache, PHP4, Javascript 1.3 , MS Visual Studio, MS Frontpage, most visual editors, vi, emac, the GNU family of tools (including grep, awk and sed) as well as many others. Extended Regular Expressions (EREs) will support Basic Regular Expressions (BREs are essentially a subset of EREs). Most applications, utilities and laguages that implement RE's extend the capabilities defined. The appropriate documentation should always be consulted.
- SSH Tricks Part II This article is part two of SSH tricks, the first article is available at [1]
- SSH Tips and Tricks
- AIX Tip of the Week: Using the Korn Shell select to Create Selection Menu's
- OpenURL COinS: A Convention to Embed Bibliographic Metadata in HTML
- The Human Sparck PBS Special
- Edge Foundation, Inc., was established in 1988 as an outgrowth of a group known as The Reality Club. Its informal membership includes of some of the most interesting minds in the world. The mandate of Edge Foundation is to promote inquiry into and discussion of intellectual, philosophical, artistic, and literary issues, as well as to work for the intellectual and social achievement of society. Edge Foundation, Inc. is a nonprofit private operating foundation under Section 501(c)(3) of the Internal Revenue Code.
- For novices, functions are one of the most intimidating features of OpenOffice.org's Calc. Newcomers quickly learn that functions are a main feature of spreadsheets, but there are almost four hundred, and many require input that assume specialized knowledge. Nor are the often circular definitions of the Function Wizard much help: You are no better off for reading that the SKEW function "returns the skewness of a distribution," for example. However, Calc includes dozens of functions that anyone can use, the most basic of which create formulas for basic arithmetic or for evaluating numbers in a range of cells.
- IOzone lets you benchmark your filesystem performance, seeing how well record IO occurs for files of various sizes. With IOzone you can see more detailed information than the read, write, and rewrite figures that Bonnie reports. IOzone is great at detecting areas where file IO might not be performing as well as expected.
- New Micro Four Thirds competitor sheds inches but keeps the DSLR-sized sensor. Check out the Samsung NX10 here.
- "Introduction to R (and R-Commander)"
- How to display and search TAB character in VIM? : Editors
- SPEC SFS 3.0 (SFS97_R1) is the latest version of the Standard Performance Evaluation Corp.'s benchmark that measures NFS file server throughput and response time. It provides a standardized method for comparing performance across different vendor platforms. This is an incremental release that based upon the design of SFS 2.0 (SFS97) and address several critical problems uncovered in that release, additional it addresses several tools issues and revisions to the run and reporting rules.
- Given a directory on a drive, and a minimum and maximum file size, this program will graph the frequency with which files within that size range appear in that directory (and all subdirectories). See screenshot.
- Integrated Development Environments / RAD tools / GUI-builders on Linux:
- 6 Great Apps to View Disk Usage in Linux By Damien Oh on Feb. 9th, 2009
- Welcome to Linux-VServer.org Linux-VServer provides virtualization for GNU/Linux systems. This is accomplished by kernel level isolation. It allows to run multiple virtual units at once. Those units are sufficiently isolated to guarantee the required security, but utilize available resources efficiently, as they run on the same kernel. This site contains information relating to the use and development of virtual servers based on Linux-VServer. This particular virtual server model is implemented through a combination of "security contexts", segmented routing, chroot, extended quotas and some other standard tools. Note: If this isn't what you are looking for, maybe Linux Virtual Server is.
Publikationen (verstecken)
- Keine Treffer.
