Search Results

Search found 7277 results on 292 pages for 'operating room analytics'.

Page 91/292 | < Previous Page | 87 88 89 90 91 92 93 94 95 96 97 98  | Next Page >

  • HTG Explains: Which Linux File System Should You Choose?

    - by Justin Garrison
    File systems are one of the layers beneath your operating system that you don’t think about—unless you’re faced with the plethora of options in Linux. Here’s how to make an educated decision on which file system to use. The landscape of the Linux file system support is drastically different from Windows and OS X. In Windows and OS X you can find software that will add support for non-standard file systems, but both operating systems can only be installed on their native file system and third party support is added after the fact. Linux on the other hand has a vast array of supported file systems built into the kernel. But how are you supposed to know which file system to pick when installing? We will take a look at some of the most popular choices available and give you use cases to consider—the choice is ultimately up to you based on your needs. Latest Features How-To Geek ETC The 50 Best Registry Hacks that Make Windows Better The How-To Geek Holiday Gift Guide (Geeky Stuff We Like) LCD? LED? Plasma? The How-To Geek Guide to HDTV Technology The How-To Geek Guide to Learning Photoshop, Part 8: Filters Improve Digital Photography by Calibrating Your Monitor Our Favorite Tech: What We’re Thankful For at How-To Geek Settle into Orbit with the Voyage Theme for Chrome and Iron Awesome Safari Compass Icons Set Escape from the Exploding Planet Wallpaper Move Your Tumblr Blog to WordPress Pytask is an Easy to Use To-Do List Manager for Your Ubuntu System Snowy Christmas House Personas Theme for Firefox

    Read the article

  • print jobs are held until the VirtualBox guest OS is reboot

    - by broiyan
    Here is the setup: VirtualBox 4.1.20 (which the Help window describes as 4.1.12_Ubuntu) Extension Pack 4.1.20 (for USB support) Windows 7 Home Premium as a guest operating system on VirtualBox Ubuntu 12.04 with dist-upgrade's to September 2012 as the host operating system. Fuji Xerox DocuPrint P205b, which I believe is a GDI printer, connected via USB. The problem is that often print jobs will sit in the print queue and nothing comes out of the printer. The printer status for the first item in the queue will be Printing even though nothing happens. Then upon rebooting Windows, the print jobs get printed, seemingly simultaneous to the rebooting process; that is as Windows reloads. One way to avoid this problem is to reboot Windows with the printer cable attached, and then submit the print jobs. The print jobs get printed in a timely manner. Perhaps VirtualBox has a problem with USB being plug-n-play and hot pluggable. It's not convenient to have the printer plugged in when Windows boots because: One, this is a laptop, and Two, I may be boot Windows for a purpose other than printing and not anticipate needing to print. Are there any recommendable fixes for this problem?

    Read the article

  • Oracle SOA Suite on Virtual Box

    - by sravan.sarraju(at)oracle.com
    Recently I have started my journey Oracle SOA Suite and the first big hurdle everyone warned me off is setting up Oracle SOA Suite environment in our personal machine for learning. My laziness pushed me to search for much easier way than regular all download, configuration stuff and bang..! I found in the solution oracle site itself. Oracle SOA Suite on Virtual Box. For those who are not aware of Virtual Box, it’s a virtualization software which enables u to install multiple operating systems on a virtual hard drive which in turn managed by Virtual Box. In short pack ur Operating System, Software, Files everything into a VM and carry it wherever u go. Coming to Oracle SOA Suite, Oracle is offering a prebuilt VM for download which u can mount on ur Virtual box and that all you need. Here is the link for Virtual Box image of Oracle SOA Suite. Virtual Box can be downloaded here It’s a huge download. I’m yet to try it myself. Will get back to my writer again once I’m done.

    Read the article

  • How to Set Up a MongoDB NoSQL Cluster Using Oracle Solaris Zones

    - by Orgad Kimchi
    This article starts with a brief overview of MongoDB and follows with an example of setting up a MongoDB three nodes cluster using Oracle Solaris Zones. The following are benefits of using Oracle Solaris for a MongoDB cluster: • You can add new MongoDB hosts to the cluster in minutes instead of hours using the zone cloning feature. Using Oracle Solaris Zones, you can easily scale out your MongoDB cluster. • In case there is a user error or software error, the Service Management Facility ensures the high availability of each cluster member and ensures that MongoDB replication failover will occur only as a last resort. • You can discover performance issues in minutes versus days by using DTrace, which provides increased operating system observability. DTrace provides a holistic performance overview of the operating system and allows deep performance analysis through cooperation with the built-in MongoDB tools. • ZFS built-in compression provides optimized disk I/O utilization for better I/O performance. In the example presented in this article, all the MongoDB cluster building blocks will be installed using the Oracle Solaris Zones, Service Management Facility, ZFS, and network virtualization technologies. Figure 1 shows the architecture:

    Read the article

  • Any good reason open files in text mode?

    - by Tinctorius
    (Almost-)POSIX-compliant operating systems and Windows are known to distinguish between 'binary mode' and 'text mode' file I/O. While the former mode doesn't transform any data between the actual file or stream and the application, the latter 'translates' the contents to some standard format in a platform-specific manner: line endings are transparently translated to '\n' in C, and some platforms (CP/M, DOS and Windows) cut off a file when a byte with value 0x1A is found. These transformations seem a little useless to me. People share files between computers with different operating systems. Text mode would cause some data to be handled differently across some platforms, so when this matters, one would probably use binary mode instead. As an example: while Windows uses the sequence CR LF to end a line in text mode, UNIX text mode will not treat CR as part of the line ending sequence. Applications would have to filter that noise themselves. Older Mac versions only use CR in text mode as line endings, so neither UNIX nor Windows would understand its files. If this matters, a portable application would probably implement the parsing by itself instead of using text mode. Implementing newline interpretation in the parser might also remove some overhead of using text mode, as buffers would need to be rewritten (and possibly resized) before returning to the application, while this may be less efficient than when it would happen in the application instead. So, my question is: is there any good reason to still rely on the host OS to translate line endings and file truncation?

    Read the article

  • How to Manage and Use LVM (Logical Volume Management) in Ubuntu

    - by Justin Garrison
    In our previous article we told you what LVM is and what you may want to use it for, and today we are going to walk you through some of the key management tools of LVM so you will be confident when setting up or expanding your installation. As stated before, LVM is a abstraction layer between your operating system and physical hard drives. What that means is your physical hard drives and partitions are no longer tied to the hard drives and partitions they reside on. Rather, the hard drives and partitions that your operating system sees can be any number of separate hard drives pooled together or in a software RAID Latest Features How-To Geek ETC Inspire Geek Love with These Hilarious Geek Valentines How to Integrate Dropbox with Pages, Keynote, and Numbers on iPad RGB? CMYK? Alpha? What Are Image Channels and What Do They Mean? How to Recover that Photo, Picture or File You Deleted Accidentally How To Colorize Black and White Vintage Photographs in Photoshop How To Get SSH Command-Line Access to Windows 7 Using Cygwin How to Kid Proof Your Computer’s Power and Reset Buttons Microsoft’s Windows Media Player Extension Adds H.264 Support Back to Google Chrome Android Notifier Pushes Android Notices to Your Desktop Dead Space 2 Theme for Chrome and Iron Carl Sagan and Halo Reach Mashup – We Humans are Capable of Greatness [Video] Battle the Necromorphs Once Again on Your Desktop with the Dead Space 2 Theme for Windows 7

    Read the article

  • Discovery methods

    - by Owen Allen
    In Ops Center, asset discovery is a process in which the software determines what assets exist in your environment. You can't monitor an asset, or do anything to it through Ops Center, until it's discovered. I've seen a couple of questions about how to discover various types of asset, so I thought I'd explain the discovery methods and what they each do. Find Assets - This discovery method searches for service tags on all known networks. Service tags are small files on some hardware and operating systems that provide basic identification info. Once a service tag has been found, you provide credentials to manage the asset. This method can discover assets quickly, but only if the target assets have service tags. Add Assets with discovery profile - This method lets you specify targets by providing IP addresses, IP ranges, or hostnames, as well as the credentials needed to connect to and manage these assets. You can create discovery profiles for any type of asset. Declare asset - This method lets you specify the details of a server, with or without a configured service processor. You can then use Ops Center to install a new operating system or configure the SP. This method works well for new hardware. These methods are all discussed in more detail in the Asset Management chapter of the Feature Reference guide.

    Read the article

  • Laptop keyboard and touchpad disabled on startup

    - by JAM
    I use Ubuntu 14.04 LTS on my Toshiba Satellite L775D laptop. 14.04 is the only operating system installed. I am new to Linux and only barely scratching the surface of doing things in terminal. When I boot my laptop keyboard and touchpad are disabled (99.99% of the time) if I do nothing. The only direct effect I can have is to keep pressing the "numlock" key during boot when I notice the "numlock" light goes off. If I do this then I have a 95% chance of the keyboard and touchpad working when I am in the operating system. I am able to use my wireless mouse regardless. I have not seen any messages during boot. Previously I have tried playing with input method settings and utilities as well as language support settings. This same problem exists with the 12.... and 13... versions of ubuntu. With everything I have tried (from looking at other posts/suggestions) it seems I can have only a temporary effect. Please help me find a permanent solution to this problem. thank you.

    Read the article

  • WebCenter 11.1.1.8 Certified with E-Business Suite 12.2

    - by Steven Chan (Oracle Development)
    Oracle WebCenter Suite is an integrated suite of Fusion Middleware 11gR1 tools used to create web sites and portals using service-oriented architecture (SOA).  Applications adapters are also available. WebCenter Portal 11.1.1.8 is now certified with Oracle E-Business Suite Release 12.2.  This complements our existing certifications of WebCenter Portal 11.1.1.8 with EBS 12.0 and 12.1.  WebCenter Portal 11.1.1.8 is part of Oracle Fusion Middleware 11g Release 1 Version 11.1.1.8.0, also known as FMW 11gR1 Patchset 7.  Certified Platforms Oracle WebCenter Portal is certified to run on any operating system for which Oracle WebLogic Server 11g is certified. For information on operating systems supported by Oracle WebLogic Server 11g and Oracle WebCenter Portal, refer to the 'Oracle Fusion Middleware on WebLogic Server - System Certification' in the Oracle Fusion Middleware 11g Release 1 (11.1.1.x) Certification Matrix. Integration with Oracle WebCenter Portal involves components spanning several different suites of Oracle products. There are no restrictions on which platform any particular component may be installed so long as the platform is supported for that component. Migrating to Oracle WebCenterIf you're currently using Oracle Portal, you should be aware that Portal is now in maintenance mode.  Updates with bug fixes will continue to be produced, but you should consider migrating to Oracle WebCenter for ongoing new features. References Using WebCenter 11.1.1 with Oracle E-Business Suite Release 12.2 (Note 1332645.1) WebCenter Portal 11g Release 1 (11.1.1.8) Documentation Related Articles Oracle E-Business Suite 12.2 Now Available WebCenter Portal 11.1.1.8 Certified with E-Business Suite 12

    Read the article

  • Oracle Endeca "Getting Started" Partner Guide

    - by Grant Schofield
    For partners looking for a concise step by step guide to getting started with Oracle Endeca Information Discovery, here it is to help you get started as quickly as possible. Step 1: Join the Knowledge Zone as a company and an individual - this will give you a) the right to resell Oracle Endeca ID, and b) notice of any free / subsidised training events in your region Step 2: For a quick general overview & positioning see the following article, in particular the Agile BI Video series which are useful in sharing with prospective clients. Also find a link to the official OEID Data Sheet. Step 3: For a more detailed overview there is a live recorded OEID partner webcast with downloadable slides. In conjunction with this, your sales / presales team have free access to the official OEID Partner Playbook as well as the full Oracle price book. Step 4: Download the OEID software and install. Please be aware you will need a 64-bit machine & a 64-bit Operating System. A useful solution for partners that have a 32-bit Operating System is to use Oracle's free VirtualBox software to quickly and easily create a Linux image and install on that. Step 5: Attend a free / subsidised training event in your region. Please join the Knowledge Zone as an Individual (opt in) to be informed of these. We will also publish these via the blog Things are moving fast, so please be aware that the team are working hard to produce more and more material such as downloadable data sets (structured / unstructured), a downloadable image, access to demos, and over the next few weeks we will update this article as soon as new material becomes available!

    Read the article

  • Custom distro using ubuntu 12.04

    - by user89707
    I am creating the custom operating system using the ubuntu 12.04. When ubuntu login from the light dm -- it shows ubuntu desktop . i need to change to the my os name. I need to replace the ambaince dark icon to fs icon by default for all the login and live cd. How to permanentely change the os name It should not change even the customer update the operating system too. I am using the remastersys. I am looking to develop the new distro. like mint ,, If i had an breif explanation of the creation of the repository and maintaining the updates . it will be more helpfull. Kindly provind the link for creating the full fledged os based on the ubuntu .. like mint, Snowlinux, etc did.. replace the grub with burg for default installation If remastersys is not good . then provide me some other tool to create . I am not having the high speed internet

    Read the article

  • Is there a way to make catalyst driver work in Trusty for the radeon hd4330?

    - by Laurent BERNABE
    Though official Catalyst software 13.1 is suitable for ati radeon hd4330, it can't be installed on Ubuntu 14.04 as it can't support Xorg = 7.6 As I need proprietary drivers for trusty, I would like to know if there is a way to bypass this limitation ? (For example by fetching driver sources) Here are some results from the terminal : $ Xorg -version X.Org X Server 1.15.1 Release Date: 2014-04-13 X Protocol Version 11, Revision 0 Build Operating System: Linux 3.2.0-37-generic x86_64 Ubuntu Current Operating System: Linux bordeaux80 3.13.0-27-generic #50-Ubuntu SMP Thu May 15 18:06:16 UTC 2014 x86_64 Kernel command line: BOOT_IMAGE=/boot/vmlinuz-3.13.0-27-generic root=UUID=4015e6f7-d11a-45fd-ac9b-5b6c7ab9eaa0 ro quiet splash vt.handoff=7 Build Date: 16 April 2014 01:36:29PM xorg-server 2:1.15.1-0ubuntu2 (For technical support please see http://www.ubuntu.com/support) Current version of pixman: 0.30.2 Before reporting problems, check http://wiki.x.org to make sure that you have the latest version. $ xrandr Screen 0: minimum 320 x 200, current 1366 x 768, maximum 8192 x 8192 LVDS connected primary 1366x768+0+0 (normal left inverted right x axis y axis) 353mm x 198mm 1366x768 60.0*+ 1280x720 59.9 1152x768 59.8 1024x768 59.9 800x600 59.9 848x480 59.7 720x480 59.7 640x480 59.4 VGA-0 disconnected (normal left inverted right x axis y axis) HDMI-0 disconnected (normal left inverted right x axis y axis) $ uname -rp 3.13.0-27-generic x86_64 $ glxinfo | grep OpenGL OpenGL vendor string: X.Org OpenGL renderer string: Gallium 0.4 on AMD RV710 OpenGL core profile version string: 3.1 (Core Profile) Mesa 10.1.0 OpenGL core profile shading language version string: 1.40 OpenGL core profile context flags: (none) OpenGL core profile extensions: OpenGL version string: 3.0 Mesa 10.1.0 OpenGL shading language version string: 1.30 OpenGL context flags: (none) OpenGL extensions: Regards

    Read the article

  • Can I have a computer with 2 physical HDs, & Dual boot option, one for Windows & one for Ubuntu

    - by Frank
    When my HD failed in my old computer with a dual core, I immediately went out and bought a new 6 core PC because I needed it for business and had to have an immediate solution. The old computer was otherwise a good computer. I don't want to spend a $100+ for a new operating system for the old computer because the Windows 7 Professional opperating system for the new computer will only allow one install. So, I decided to look and see if there were any free operating systems and found Ubuntu. I downloaded it and burned a live CD and would like to try it on the old computer. I found a 200 GB HD I can buy for $30 and the seller will format it any way I want. There are also other HDs available at a similar price. What I was thinking I would like to do is buy 2 HDs. Then I can have one formatted for Ubuntu 12.04 and install Windows XP Pro SP1 on the other HD for which I have the original installation CD. Then I would like to have a dual boot option so that when I power up the computer, I can choose whether to use Windows XP or Ubuntu. Is this possible? If so, how would I do it, that is, arrange it so a dual boot option presents itself on power up.

    Read the article

  • x server startx error?

    - by Chris
    root@thewhitewox:~# startx X.Org X Server 1.7.6 Release Date: 2010-03-17 X Protocol Version 11, Revision 0 Build Operating System: Linux 2.6.24-29-server i686 Ubuntu Current Operating System: Linux thewhitewox 2.6.18-238.9.1.el5.028stab089.1 #1 SMP Thu Apr 14 14:06:01 MSD 2011 i686 Kernel command line: quiet Build Date: 20 October 2011 03:05:54PM xorg-server 2:1.7.6-2ubuntu7.10 (For technical support please see ww w.ubuntu . com/support) Current version of pixman: 0.16.4 Before reporting problems, check http: //wiki.x.org to make sure that you have the latest version. Markers: (--) probed, (**) from config file, (==) default setting, (++) from command line, (!!) notice, (II) informational, (WW) warning, (EE) error, (NI) not implemented, (??) unknown. (==) Log file: "/var/log/Xorg.0.log", Time: Tue Nov 15 00:50:32 2011 (==) Using config directory: "/usr/lib/X11/xorg.conf.d" Fatal server error: xf86OpenConsole: Cannot open /dev/tty0 (No such file or directory) Please consult the The X.Org Foundation support at http ://wiki.x.org for help. Please also check the log file at "/var/log/Xorg.0.log" for additional information. ddxSigGiveUp: Closing log What does this mean and how can I fix it?

    Read the article

  • NMap 6.01

    - by TATWORTH
    NMap 6.01 has been released at http://nmap.org/download.html"Nmap ("Network Mapper") is a free and open source (license) utility for network discovery and security auditing. Many systems and network administrators also find it useful for tasks such as network inventory, managing service upgrade schedules, and monitoring host or service uptime. Nmap uses raw IP packets in novel ways to determine what hosts are available on the network, what services (application name and version) those hosts are offering, what operating systems (and OS versions) they are running, what type of packet filters/firewalls are in use, and dozens of other characteristics. It was designed to rapidly scan large networks, but works fine against single hosts. Nmap runs on all major computer operating systems, and official binary packages are available for Linux, Windows, and Mac OS X. In addition to the classic command-line Nmap executable, the Nmap suite includes an advanced GUI and results viewer (Zenmap), a flexible data transfer, redirection, and debugging tool (Ncat), a utility for comparing scan results (Ndiff), and a packet generation and response analysis tool (Nping)."Home page is at http://nmap.org/  Nmap is free to download and use. You can download the source and compile it yourself if you so require.

    Read the article

  • Fresh install of 64 bit 12.04 over 32 bit 11.10 alongside Windows 7

    - by Pareen
    I currently have Ubuntu 11.10 32 bit and Windows 7 dual boot in separate partitions. I am trying to do a fresh install of Ubuntu 12.04 64 bit (mistakenly installed the 32 bit 11.10 a little while ago.. I need a 64 bit version to support AOSP build) OVER my the exisiting 11.10 partition. I have referenced How to Install fresh 12.04 install to a PC with dual booting Windows 7 & Ubuntu11.10?, as well as other posts on using the Live CD to do a fresh install. However, the problem I am experiencing is when I bring up the install screen, it says the following: This computer has multiple operating systems on it. What would you like to do. (3 options) Install Ubuntu 12.04 alongside them Replace all with Ubuntu 12.04 (Warning, this will delete files across ALL operating systems) Something else (you can create or resize partitions yourself) This is different from what is in other posts, as mine states that there are "multiple O.Ses" and doesnt individually allow me to replace the Ubuntu 11.10. I don't want to replace ALL O.S.es: I need to preserve Windows 7 and am only trying to replace the old Ubuntu 11.10 partition with the new 12.04 64 bit. I did have Ubuntu installed via Wubi (I believe it was 10.04) prior to putting 11.10 in a separate partition, but I have removed it via Add/Remove programs in Windows. I was wondering how to go about doing this... Should I use the "Something else" option to bring up the partition manager, and just assign my existing 11.10 partition with root mount point + swap space. Will this do the same thing by overwriting with fresh 12.04 install?? I appreciate all your help.

    Read the article

  • How to start Ubuntu with no working video card?

    - by ViliusK
    I have a laptop with broken video card. It has two operating systems installed - Windows 7 and Ubuntu 10.10 Desktop Edition. It has GRUB to manage which operating system to boot up. Windows is default OS. And Windows fails to boot up without video card. I'm checking with ping to the ports which are shown as used by DHCP in my router. Normal boot of Ubuntu also fails and it restarts after a while. But when I choose (blindly, but checking HDD indicator and by counting button presses when GRUB menu appears) to boot second option of Ubuntu (rescue mode) it starts and I can ping it. But when I try to connect to it through SSH, I'm getting "connection refused" error from putty. I've took out HDD from my laptop already and inserted it to WD Passport case so now I can connect it to other computer to edit configuration files. How can I check if SSH server is working? How to enable it in rescue mode? Or better, how to disable video card to be required while booting Ubuntu in normal mode?

    Read the article

  • GRUB2 stuck at rescue console, showing "unknown filesystem" for all partitions

    - by AndiDog
    I installed Ubuntu 12.04 on my external USB drive, where I have a 700GB NTFS partition followed by the new 6GB ext4 partition and a swap partition (all primary). The GRUB MBR is also installed to the external hard disk. Since my BIOS puts the external drive as first disk when booting, I removed my internal hard disk before installation in order to avoid ordering problems. Now when I boot from the external drive, GRUB is stuck at the rescue console with the error "unknown filesystem". grub rescue> ls (hd0) (hd0,msdos3) (hd0,msdos2) (hd0,msdos1) ls (hd0,<any of them>)/ gives me "unknown filesystem", thus also "insmod normal" GRUB doesn't seem to be able to read my Linux partition as you can see above?! How can I solve this? Additional info: bootinfoscript says (this is with the internal drive in again, but that does not make a difference): Grub2 (v1.99) is installed in the MBR of /dev/sdb and looks at sector 1 of the same hard drive for core.img. core.img is at this location and looks for (,msdos2)/boot/grub on this drive. sdb1: __________________________________________________________________________ File system: ntfs Boot sector type: Windows Vista/7: NTFS Boot sector info: No errors found in the Boot Parameter Block. Operating System: Boot files: sdb2: __________________________________________________________________________ File system: ext4 Boot sector type: - Boot sector info: Operating System: Ubuntu 12.04 LTS Boot files: /boot/grub/grub.cfg /etc/fstab /boot/grub/core.img sdb3: __________________________________________________________________________ File system: swap Boot sector type: - Boot sector info:

    Read the article

  • Is there supposed to be a Windows Network folder in the file manager?

    - by Cindy
    I pulled my hard drive out of my computer and started with a bootable usb version of Ubuntu, which I am using that at this point. At first boot, I see that there is a Windows folder when browsing network. Since there is no operating system present, besides the usb that I boot from, should there be a Windows network folder? Original question First of all I just want to say, I wish I had tried Ubuntu a couple years ago when I first heard about it, but I was like a lot of the population and went with the "easy way" and stuck with Windows because I didn't want to take the time to learn something new. Well, about 3 months ago I realized someone had hacked into my computer, and then found they had hacked my facebook account so I decided I had better do a complete credit check. I found student loans (totalling about 30,000 so far) had recently showed up on my credit report. I think it's going to be a long, long road to recovery now but I'm hoping Ubuntu will be a start and definitely an eye opener. My relationship with Windows is over. I had 3 antivirus programs running, none were protecting me like I thought they were. Turned out a free program that I downloaded was the only one that could detect and clean the virus, but by then it was too late. Anyhow, my question is, I pulled my hard drive out of my computer and started with a bootable usb version of Ubuntu, which I am using that at this point. At first boot, I see that there is a Windows folder when browsing network. Since there is no operating system present, besides the usb that I boot from, should there be a Windows network folder? I am using a local ISP (and won't be much longer because I am very paranoid at this point) and I want to make sure all is ok before I put my new hard drive in and install Ubuntu. Any help would be appreciated. Also, I want to thank Ubuntu and the community for giving people an alternative.

    Read the article

  • Any good reason to open files in text mode?

    - by Tinctorius
    (Almost-)POSIX-compliant operating systems and Windows are known to distinguish between 'binary mode' and 'text mode' file I/O. While the former mode doesn't transform any data between the actual file or stream and the application, the latter 'translates' the contents to some standard format in a platform-specific manner: line endings are transparently translated to '\n' in C, and some platforms (CP/M, DOS and Windows) cut off a file when a byte with value 0x1A is found. These transformations seem a little useless to me. People share files between computers with different operating systems. Text mode would cause some data to be handled differently across some platforms, so when this matters, one would probably use binary mode instead. As an example: while Windows uses the sequence CR LF to end a line in text mode, UNIX text mode will not treat CR as part of the line ending sequence. Applications would have to filter that noise themselves. Older Mac versions only use CR in text mode as line endings, so neither UNIX nor Windows would understand its files. If this matters, a portable application would probably implement the parsing by itself instead of using text mode. Implementing newline interpretation in the parser might also remove some overhead of using text mode, as buffers would need to be rewritten (and possibly resized) before returning to the application, while this may be less efficient than when it would happen in the application instead. So, my question is: is there any good reason to still rely on the host OS to translate line endings and file truncation?

    Read the article

  • Strange Upload Problem on Hyper-V

    - by Ring0
    Hi, This one is driving me totally nuts. I have being trying to upload a file to www.virustotal.com (its a harmless exe I have since found out - DiskWipe.exe from diskwipe.org). Using IE8. From Win 7 and Win 2008 R2 Datacenter (which I select to boot from vhd's) onto my main machine hardware, and also on another Win 7 PC elsewhere on my network, when I upload the file to virustotal.com it works perfectly. So, using my native NIC's everything is fine. Using another machine also perfect. Right. OK, from my boot menu the default is my main development machine - the one I'm typing on now. This runs on the metal and has Hyper-V role and I have some guests. All guests are not running. Amazingly, from my console (root partition to be exact) or any guest OS 2003 /XP / 2008 R2 etc. My upload to virustotal.com slows at 32% then HANGS at 38.something% & never finishes!! Here is the kicker. I have another box (my main server) running Hyper-V on the metal and three live guests. Identical H/W to my main dev machine in another room. (Except OS is Datacenter - Mine is Enterprise). If I try and upload from its bare metal console or any guest this file to virustotal.com using IE8 it stops exactly in the same place!! As for "steps I have tried etc." are kind-of blown out of the water as my server box is doing the precise same thing as the machine in my room here. OK, comonalities: Mobo: Gigabyte GA-X58-UD5, 12GB Kingston RAM, Corei7 920 4 cores hyperthreading = 8 & Realtek RTL8168D/8111D Family PCI-E Gigabit Ethernet NIC's. All 3 machines have this same motherboard - revision F11 Bios, all have 12GB RAM, all have the Realtek Nic's. All x64 by the way as I mentioned before I have a Win 7 box also with the UD5 m/Board, 12 GB RAM - bit of an overkill. :-) All these machines when NOT running Hyper-V can upload this file. Perhaps you may like to try it on a Hyepr-v (2008 R2) yourselves with IE8 and the desktop experience is on. See if it works or fails for you. Root OS or any guest. So, looking like its the NIC + Hyper-V = Cannot upload this file (any file I must add.) Realtek Nic is Ver 7.002.1125.2008. Using IE8 I see in the nic settings there are the usual parameters for Jumbo frames / Checksum offloading etc. several others. Should I fiddle with these? I ran Netmon 3.3 in a guest and the TCP session halted as the upload failed. I suppose I could study that further. I dont have Netmon on the root partition machine (yet)! All OS's fully patched - including todays defender files. My box running Office 2007 - but identical server in another room is not. Also, if I fire up a VPN to a distant client and do the upload it works! Of course its a different network path. Suggestions welcome please. If I left out anything important - please yell at me. Many Thanks,

    Read the article

  • CodePlex Daily Summary for Friday, June 04, 2010

    CodePlex Daily Summary for Friday, June 04, 2010New Projects23 Umbraco addons: 23 Umbraco addonsAdd-ons for EPiServer Relate+: In the Add-ons for EPiServer Relate+ you will find add-ons, extensions and modules that work together with EPiServer Relate+.Advanced Mail Merge (AMM) for Microsoft Office: Advanced Mail Merge for Microsoft Word 2007/2010, offers great extensable functionality: - Merge to document (PDF) - Merge to attachment - Use Out...Cenobith RLS Sample: Simple implementation of Row Level Security for Microsoft SQL ServerCodingWheels.DataTypes: DataTypes tries to make it easier for developers to have concrete typesafe objects for working with many common forms of data. Many times these dat...DigitArchive: Digit Archive makes it easy for the DIGIT magazine readers to find the correct software or movie bundled in the media along with the magazine. You'...dNet.DB: dNetDB is a .net framework that simplifies model and data access by providing a database independent object-based persistence, where objects are pe...Dynamic Application Framework: The Dynamic Application Framework provides a highly flexible environment for creating applications. Multiple UI and Execution Environments, along w...ECoG: ECoG toolkitFB Toolkit with Contracts: This is a research project where I have inserted code contracts into the Facebook Toolkit source code., version 3.1 beta. This delivers an efficien...GeneCMS: GeneCMS allows users to generate static HTML based websites by offering an ASP.NET editing front-end that can be run in the local machine. It is ta...HooIzDat: HooIzDat is game that asks, who the heck is that?! It's a two player game where your task is to guess your opponent's person before he or she guess...JingQiao.Interacting: JingQiao Interacting MessagingKanbanBoard: Visual task board for Kanban and Scrum.Learning CSharp: Just Learning CSharpMammoth: mammothMapWindow Mobile: MapWindow Mobile is mobile GIS Software which can run on windows mobile, developed in C# .NET Compact Framework. It provides basic GIS functionalit...Mindless Setback: Setback is a card game popular in New England. This project uses a combination of brute force and Monte Carlo methods to play Setback. This is an e...MSNCore(DirectUI) Element Viewer: MSNCore Element Viewer is an application designed to enumerate the elements with in applications built with MSNCore.dll and UXCore.dll. This appli...MSVN Team: bài tập thầy lườngNugget: Web Socket Server: A web socket server implemented in c#. The goal of the projects is to create an easy way to start using HTML5 web sockets in .NET web applications.oSoft ColorPicker Control for Visual Studio 2010: oSoft ColorPicker is an user control that can be used instead of the ColorDialog when you want to allow your users to select a color in a windows f...Prism Software Factory: The Prism Software Factory is a software factory for Visual Studio 2010 assisting developers in the process of building WPF & Silverlight applicati...Project Lion: Project lion is forum developed in Silverlight technology. Refix - .NET dependency management: Refix is an attempt to solve the problem of binary dependency management in large .NET solutions. It will achieve the goal using (amongst other thi...Rich Task List: Rich Task List is a tutorial project for DotNetNuke Module Development.SharePoint PowerRSS: Easy/Clean way to get SharePoint list data via more standard RSS feed. I found CleanRSS.aspx as part of SPRSS: Enhanced RSS Functionality for WSS ...SOAPI - StackOverflow API Generator: Generates, directly from the self documenting StackOverflow API specification, an end-to-end, fully documented API wrapper library with Visual Stu...SQL Script Application Utility: This C# project allows you to apply scripts to a database for table creation, data creation, etc. You can keep DDL in separate SQL scripts which c...Sql Server Reports Viewer: Sql Server Reports Viewer makes it easier to render Sql Server Reports without the need to setup a SSRS Server. This makes deployments a breeze. ...StorageHD: StorageHD system for large video filesUrzaGatherer: UrzaGatherer is a WPF 4.0 client application to handle Magic The Gathering cards collections. You can manage expansions, blocks and all informatio...webrel: This tool executes simple relational algebra expressions. It is useful for learning of Database course. Javascript and xhtml is used to develop thi...World Wide Grab: World Wide Grab allows retrieval and integration of various semi-structured data sorces, expecially Web applications. It turns every available res...New Releases3FD - Framework For Fast Development (C++): Alpha 3: This release was compiled in Visual Studio Release mode. It means you can use it in whatever compiler you want. However, the compatibility with ano...Advanced Mail Merge (AMM) for Microsoft Office: Advanced MailMerge 2007.zip: Release 1.1.0.0Army Bodger: Bodger 3 Archetype Test: Ok so it's later and I've largely finished it. Right now the Space Wolves have their Troops written and one HQ unit. The equipment panel largely wo...AwesomiumDotNet: AwesomiumDotNet 1.6 beta: Preview of AwesomiumDotNet 1.6.Bojinx: Bojinx Core V4.6: New features in this release: Greatly improved logging for INFO and DEBUG. Improved the getClassName function in ObjectUtils. Added the ability ...Cenobith RLS Sample: Sample App: Change connection strings in App.config and Web.config files.Christoc's DotNetNuke C# Module Development Template: 00.00.02: A minor update from the original release with a few fixes including Localization and some updated documentation.Community Forums NNTP bridge: Community Forums NNTP Bridge V25: Release of the Community Forums NNTP Bridge to access the social and anwsers MS forums with a single, open source NNTP bridge. This release has ad...DEWD: DEWD for Umbraco v1.0: Beta release of the package. Functional feature set and fairly stable. Since the alpha: Validation on input fields Custom view controls Ability...DotNetNuke Developers Help File: DNNHelpSystem 05.04.02: Release of the developer core API help documentation of DotNetNuke in MSDN style format, both as .CHM stand alone file as well as a html website ba...Drive Backup: Drive Backup V.0604: This release includes the following fixes/features: * Fixed incompatibility with some USB drives (those marked as “fixed” by Windows) * Ad...Event Scavenger: Version 3.3 (Refresh): Archiving bit added to database plus archiving stored procedure updated. Rest of items just refreshed. Database set to version 3.3Expression Encoder Batch Processor: Expression Batch v0.3: Now set the newly-converted file's Created DateTime to equal the source file's. This helps keep your videos sorterd chronologically in media librar...Folder Bookmarks: Folder Bookmarks 1.6.1: The latest version of Folder Bookmarks (1.6.1), with Mini-Menu bug fixes and 'Help' feature - all the instructions needed to use the software (If y...Genesis Smart Client Framework: Genesis v2.0 - Ruby User Experience Platform (UXP): This is the start of the rewrite of the entire framework. The rewrite will include support for XAML through WPF and Silverlight, WCF, Workflow Serv...Global: http requester tool: Added a brnad new console app for making http requests.GMap.NET - Great Maps for Windows Forms & Presentation: Hot Build: this is latest change-set build, unstable previewHERB.IQ: Alpha 0.1 Source code release 4: As of 6-23-10 @ 9:48ESTInfragistics Analytics Framework: Infragistics Analytics Framework 1.0: This project includes wrappers for the Infragistics controls that integrate with the recently launched Microsoft Silverlight Analytics Framework. T...Innovative Games: Cube Mapper: Cube Mapper is a small tool that takes in six textures and outputs a cube map that is a combination of the six textures. Cube Mapper supports .tga...jQuery Library for SharePoint Web Services: SPServices 0.5.6: This release is in an alpha state. Please only download it if you know what you are getting and are willing to test it. In any case, it's a bad ide...linq to jquery: jlinq v1.00 no doc: First public version of jlinq! no doc yet, soon too come!LinqSpecs: Version 1.0.1: Fabio Maulo has sent several patchs in order to make LinqSpecs to work with any linq provider other than in memory. Big KUDOS for him.mojoPortal: 2.3.4.4: see release notes on mojoportal.com Note that we have separate deployment packages for .NET 3.5 and .NET 4.0 The deployment package downloads on ...Nugget: Web Socket Server: Initial POC release: The initial proof of concept release. To try it out, open the Sample App.sln, set the ChatServer project as the start-up project, start debugging ...oSoft ColorPicker Control for Visual Studio 2010: oSoft ColorPicker Control for VS 2010 Beta 1: Beta 1Refix - .NET dependency management: Refix v0.1.0.48 ALPHA: First preview version of Refix command-line tool.SharePoint 2010 CSV Bulk Term Set Importer: Bulk Term Set Importer: Initial ReleaseSOAPI - StackOverflow API Generator: SOAPI Wrappers: SOAPI-JS First release as SOAPI-JS, SOAPI-CS coming shortly. Tests and example includedSQL Compact Toolbox: Beta 0.8.1: Initial test release - mind the bumps. Requires Visual Studio 2010.Thumb nail creator and image resizer: ThumbnailCreator1.2: this release fixes and issue that was occuring when the control was used inside paged dataTS3QueryLib.Net: TS3QueryLib.Net Version 0.23.17.0: Changelog Added Properties "IsSpacer" and "SpacerInfo" to ChannelListEntry. "IsSpacer" allows you to check whether the channel is a spacer channel ...UI Accessibility Checker: UI Accessibility Checker v.2.0: We are excited to announce the release of AccChecker 2.0! In addition to numerous bug fixes and usability improvements, these major features have...webrel: webrel 1.0: webrel 1.0WindStyle SlugHelper for Windows Live Writer: 1.2.0.0: 增加:可以配置是否忽略已经包含slug的日志,请在插件选项中配置; 增加:插件图标; 更新:支持最新Windows Live Writer,版本号14.0.8117.416。Work Recorder - Hold on own time!: WorkRecorder 1.1: +Only one instance can run #Change histogram to pie chartMost Popular ProjectsWBFS ManagerRawrAJAX Control ToolkitMicrosoft SQL Server Product Samples: DatabaseSilverlight ToolkitWindows Presentation Foundation (WPF)PHPExcelpatterns & practices – Enterprise LibraryMicrosoft SQL Server Community & SamplesASP.NETMost Active ProjectsCommunity Forums NNTP bridgeRawrIonics Isapi Rewrite Filterpatterns & practices – Enterprise LibraryGMap.NET - Great Maps for Windows Forms & PresentationN2 CMSBlogEngine.NETFarseer Physics EngineMain projectMirror Testing System

    Read the article

  • CodePlex Daily Summary for Monday, March 26, 2012

    CodePlex Daily Summary for Monday, March 26, 2012Popular ReleasesQuick Performance Monitor: Version 1.8.1: Added option to set main window to be 'Always On Top'. Use context (right-click) menu on graph to toggle..Net Rest API for Kayako Fusion 4: kayako_rest_api_2012.03.26: Added ability to search for users via organisation/email. This is much quicker than getting all users then filtering.GeoMedia PostGIS data server: PostGIS GDO 1.0.1.1: This is a new version of GeoMeda PostGIS data server which supports user rights. It means that only those feature classes, which the current user has rights to select, are visible in GeoMedia. Issues fixed in this release Fixed a problem when gdo.gfeaturesbase table has been visible in GeoMedia. To hide this table, run the previous version of Database Utilities and uncheck this table in the feature classes list. Then load the new release. Fixed a problem when coordinate system list has not...Silverlight 4 & 5 Persian DatePicker: Silverlight 4 and 5 Persian DatePicker: Added Silverlight 5 support.Y.Music: Y.Music v.1.0: ?????? ?????? ?????????. ????????: ????? ???? ????, ??????? ?????? ? ??? - Beta.Asp.NET Url Router: v1.0: build for .net 2.0 and .net 4.0menu4web: menu4web 0.0.3: menu4web 0.0.3ArcGIS Editor for OpenStreetMap: ArcGIS Editor for OSM 2.0 Final: This release installs both the ArcGIS Editor for OSM Server Component and/or ArcGIS Editor for OSM Desktop components. The Desktop tools allow you to download data from the OpenStreetMap servers and store it locally in a geodatabase. You can then use the familiar editing environment of ArcGIS Desktop to create, modify, or delete data. Once you are done editing, you can post back the edit changes to OSM to make them available to all OSM users. The Server Component allows you to quickly create...Craig's Utility Library: Craig's Utility Library 3.1: This update adds about 60 new extension methods, a couple of new classes, and a number of fixes including: Additions Added DateSpan class Added GenericDelimited class Random additions Added static thread friendly version of Random.Next called ThreadSafeNext. AOP Manager additions Added Destroy function to AOPManager (clears out all data so system can be recreated. Really only useful for testing...) ORM additions Added PagedCommand and PageCount functions to ObjectBaseClass (same as M...XNA Electric Effect: Jason Electric Effect v1.1: The library now includes 3 effect types: Line, Bezier, CatmullRom, providing different look and feel.DotSpatial: DotSpatial 1.1: This is a Minor Release. See the changes in the issue tracker. Minimal -- includes DotSpatial core and essential extensions Extended -- includes debugging symbols and additional extensions Just want to run the software? End user (non-programmer) version available branded as MapWindow Want to add your own feature? Develop a plugin, using the template and contribute to the extension feed (you can also write extensions that you distribute in other ways). Components are available as NuGet pa...Change default Share-site group SharePoint Online (Office 365): Change default Share-site group SharePoint Online: As default when we share a site collection or site with external users, SharePoint Online show default SharePoint groups which are Visitors and Members. By using this feature, you will get a link which you can use to customize the default groups to your custom groups and other default groups.Microsoft All-In-One Code Framework - a centralized code sample library: C++, .NET Coding Guideline: Microsoft All-In-One Code Framework Coding Guideline This document describes the coding style guideline for native C++ and .NET (C# and VB.NET) programming used by the Microsoft All-In-One Code Framework project team.Working with Social Data: Tag Cloud Customization: http://swatipoint.blogspot.com/2011/10/sharepoint-2010-social-featurestagging.htmlWebDAV for WHS: Version 1.0.67: - Added: Check whether the Remote Web Access is turned on or not; - Added: Check for Add-In updates;Phalanger - The PHP Language Compiler for the .NET Framework: 3.0 (March 2012) for .NET 4.0: March release of Phalanger 3.0 significantly enhances performance, adds new features and fixes many issues. See following for the list of main improvements: New features: Phalanger Tools installable for Visual Studio 2011 Beta "filter" extension with several most used filters implemented DomDocument HTML parser, loadHTML() method mail() PHP compatible function PHP 5.4 T_CALLABLE token PHP 5.4 "callable" type hint PCRE: UTF32 characters in range support configuration supports <c...Nearforums - ASP.NET MVC forum engine: Nearforums v8.0: Version 8.0 of Nearforums, the ASP.NET MVC Forum Engine, containing new features: Internationalization Custom authentication provider Access control list for forums and threads Webdeploy package checksum: abc62990189cf0d488ef915d4a55e4b14169bc01 Visit Roadmap for more details.BIDS Helper: BIDS Helper 1.6: This beta release is the first to support SQL Server 2012 (in addition to SQL Server 2005, 2008, and 2008 R2). Since it is marked as a beta release, we are looking for bug reports in the next few months as you use BIDS Helper on real projects. In addition to getting all existing BIDS Helper functionality working appropriately in SQL Server 2012 (SSDT), the following features are new... Analysis Services Tabular Smart Diff Tabular Actions Editor Tabular HideMemberIf Tabular Pre-Build ...Json.NET: Json.NET 4.5 Release 1: New feature - Windows 8 Metro build New feature - JsonTextReader automatically reads ISO strings as dates New feature - Added DateFormatHandling to control whether dates are written in the MS format or ISO format, with ISO as the default New feature - Added DateTimeZoneHandling to control reading and writing DateTime time zone details New feature - Added async serialize/deserialize methods to JsonConvert New feature - Added Path to JsonReader/JsonWriter/ErrorContext and exceptions w...New ProjectsASIVeste: No description availableAuthor-it Sync Headings Plug-in: Author-it plug-in that allows the user to synchronize the Print, Help, and Web headings with the Description for each selected topic.BlogEngine.Web: BlogEngine.Web is a BlogEngine.Net converted to use Web Application Project model (WAP).Code Writer Helper: A quick solution to help code generator writers.CodeUITest: Practise CodeUI automation.DAX Studio: Excel Add-In for PowerPivot and Analysis Services Tabular projects that will include an Object Browser, query editing and execution, formula and measure editing ,syntax highlighting, integrated tracing and query execution breakdowns.Fated: Fated is an isometric-viewed, tile-based tactical RPG developed in C# using XNA to be deployed to XBox. This includes a character generation core, graphics engine, and storyline parser.iSufe???: “iSufe???”??????????????????????????????。???????????、????、?????????,??????????????。??,????iOS/Android/WAP???????,???????????????。????GPLv2??,?????????????。Kinect test project: Basic project for my kinect test applicationLoLTimers: LoLTimers by Christian Schubert 2012. Version 1.0.0.0 This is a small app that lets you keep track of the most important creep camp cooldowns. Developed in Visual Studio C#.London Priority Security Services Ltd: LPSS - London Priority Security Services LtdNMCNPM: code nhóm nmcnpmOffice 365 Anonymous Access Manager Sandbox Solution: The sandbox solution enables you to manage anonymous access of lists on Office 365. It allows setting read, modifying and adding rights. Additionally the configuration page adds the necessary events to be able to use moderations, when anonymous users are creating a list item. The second feature in the solution enables anonymous access on blogs sites, it allows to enable anonymous users to comment on a blog.Office 365 Google Analytics: This sandbox solution enables google analytics everywhere in your site collection. This allows you to use the google analytics reporting on all your Office 365 sites.Office 365 Mobile Access Enables for Public Sites & Blogs: This sandbox solution enables mobile access on Office 365 sites.OwnMFCSolution: MFC test solution.People Data Generator: Need to load a bunch of test data to represent people (e.g. name, address, phone, etc.)? Wish it looked realistic? People Data Generator is what you need. Features: *Realistic names *Realistic addresses, using real towns and postal codes *Realistic phone numbers and emails *Very ExtensibleProventi: Met dit programma kan je je voorraad van je onderneming beheren. Dit programma zal in eerste instantie gebruikt worden binnen de minionderneming Proventi. Het programma is geschreven in VB.Net en maakt gebruik van SQL Server CE voor de gegevensopslag.qCommerce: ??????????? ???????, ???????????? ??? ????? qSoftwareQuanLyOTo: Ð? án môn h?c C# qu?n lý garage ô tôRoyaSoft.ir Resources: i am use this project for my personal web site :)SGPF: The team does not have nothing to declare here!SharePoint 2010 Autocomplete Lookup Field: Autocomplete Lookup field allows type ahead functionality while entering lookup values in list items.Sharing Photos using SignalR: An MVC application using SignalR that can be used to share photos between friends and get realtime updates. An user connected to the website can upload a photo which will be automatically broadcasted to all clients connected at that point.Sistema Hoteleiro: Sistema Hoteleiro é o meu trabalho final da disciplina Arquitetura de Aplicativos Ambiente .NET da 4a turma do curso de pós-graduação de especialização em Arquitetura de Sistemas Distribuídos oferecido pelo Instituto de Educação Continuada da Pontifícia Universidade Católica de MSoftware Revolution: This project is core information site of Software Revolution named company which provides software solutions.tgryi: tgyrivbWSUS: Really decide which and when to install updates from a centralized server, globally or per host : - installation schedule - updates to install - email results - configure extra Windows Update parameters Works with WSUS server or Windows Update from Microsoft. See README.txt for more informations ! :) Current official website is http://sourceforge.net/projects/vbwsus/XamlCombine: Combines multiple XAML resource dictionaries in one. Replaces DynamicResources to StaticResources. And sort them in order of usage.XNA Shader-free Linear Burn effect: Sample demonstrating a Linear Burn effect in XNA without using custom shaderszhCms: zhCmszhtest: my test project

    Read the article

  • Linux-Containers — Part 1: Overview

    - by Lenz Grimmer
    "Containers" by Jean-Pierre Martineau (CC BY-NC-SA 2.0). Linux Containers (LXC) provide a means to isolate individual services or applications as well as of a complete Linux operating system from other services running on the same host. To accomplish this, each container gets its own directory structure, network devices, IP addresses and process table. The processes running in other containers or the host system are not visible from inside a container. Additionally, Linux Containers allow for fine granular control of resources like RAM, CPU or disk I/O. Generally speaking, Linux Containers use a completely different approach than "classicial" virtualization technologies like KVM or Xen (on which Oracle VM Server for x86 is based on). An application running inside a container will be executed directly on the operating system kernel of the host system, shielded from all other running processes in a sandbox-like environment. This allows a very direct and fair distribution of CPU and I/O-resources. Linux containers can offer the best possible performance and several possibilities for managing and sharing the resources available. Similar to Containers (or Zones) on Oracle Solaris or FreeBSD jails, the same kernel version runs on the host as well as in the containers; it is not possible to run different Linux kernel versions or other operating systems like Microsoft Windows or Oracle Solaris for x86 inside a container. However, it is possible to run different Linux distribution versions (e.g. Fedora Linux in a container on top of an Oracle Linux host), provided it supports the version of the Linux kernel that runs on the host. This approach has one caveat, though - if any of the containers causes a kernel crash, it will bring down all other containers (and the host system) as well. For example, Oracle's Unbreakable Enterprise Kernel Release 2 (2.6.39) is supported for both Oracle Linux 5 and 6. This makes it possible to run Oracle Linux 5 and 6 container instances on top of an Oracle Linux 6 system. Since Linux Containers are fully implemented on the OS level (the Linux kernel), they can be easily combined with other virtualization technologies. It's certainly possible to set up Linux containers within a virtualized Linux instance that runs inside Oracle VM Server for Oracle VM Virtualbox. Some use cases for Linux Containers include: Consolidation of multiple separate Linux systems on one server: instances of Linux systems that are not performance-critical or only see sporadic use (e.g. a fax or print server or intranet services) do not necessarily need a dedicated server for their operations. These can easily be consolidated to run inside containers on a single server, to preserve energy and rack space. Running multiple instances of an application in parallel, e.g. for different users or customers. Each user receives his "own" application instance, with a defined level of service/performance. This prevents that one user's application could hog the entire system and ensures, that each user only has access to his own data set. It also helps to save main memory — if multiple instances of a same process are running, the Linux kernel can share memory pages that are identical and unchanged across all application instances. This also applies to shared libraries that applications may use, they are generally held in memory once and mapped to multiple processes. Quickly creating sandbox environments for development and testing purposes: containers that have been created and configured once can be archived as templates and can be duplicated (cloned) instantly on demand. After finishing the activity, the clone can safely be discarded. This allows to provide repeatable software builds and test environments, because the system will always be reset to its initial state for each run. Linux Containers also boot significantly faster than "classic" virtual machines, which can save a lot of time when running frequent build or test runs on applications. Safe execution of an individual application: if an application running inside a container has been compromised because of a security vulnerability, the host system and other containers remain unaffected. The potential damage can be minimized, analyzed and resolved directly from the host system. Note: Linux Containers on Oracle Linux 6 with the Unbreakable Enterprise Kernel Release 2 (2.6.39) are still marked as Technology Preview - their use is only recommended for testing and evaluation purposes. The Open-Source project "Linux Containers" (LXC) is driving the development of the technology behind this, which is based on the "Control Groups" (CGroups) and "Name Spaces" functionality of the Linux kernel. Oracle is actively involved in the Linux Containers development and contributes patches to the upstream LXC code base. Control Groups provide means to manage and monitor the allocation of resources for individual processes or process groups. Among other things, you can restrict the maximum amount of memory, CPU cycles as well as the disk and network throughput (in MB/s or IOP/s) that are available for an application. Name Spaces help to isolate process groups from each other, e.g. the visibility of other running processes or the exclusive access to a network device. It's also possible to restrict a process group's access and visibility of the entire file system hierarchy (similar to a classic "chroot" environment). CGroups and Name Spaces provide the foundation on which Linux containers are based on, but they can actually be used independently as well. A more detailed description of how Linux Containers can be created and managed on Oracle Linux will be explained in the second part of this article. Additional links related to Linux Containers: OTN Article: The Role of Oracle Solaris Zones and Linux Containers in a Virtualization Strategy Linux Containers on Wikipedia - Lenz Grimmer Follow me on: Personal Blog | Facebook | Twitter | Linux Blog |

    Read the article

  • Computer Networks UNISA - Chap 12 &ndash; Networking Security

    - by MarkPearl
    After reading this section you should be able to Identify security risks in LANs and WANs and design security policies that minimize risks Explain how physical security contributes to network security Discuss hardware and design based security techniques Understand methods of encryption such as SSL and IPSec, that can secure data in storage and in transit Describe how popular authentication protocols such as RADIUS< TACACS,Kerberos, PAP, CHAP, and MS-CHAP function Use network operating system techniques to provide basic security Understand wireless security protocols such as WEP, WPA and 802.11i Security Audits Before spending time and money on network security, examine your networks security risks – rate and prioritize risks. Different organizations have different levels of network security requirements. Security Risks Not all security breaches result from a manipulation of network technology – there are human factors that can play a role as well. The following categories are areas of considerations… Risks associated with People Risks associated with Transmission and Hardware Risks associated with Protocols and Software Risks associated with Internet Access An effective security policy A security policy identifies your security goals, risks, levels of authority, designated security coordinator and team members, responsibilities for each team member, and responsibilities for each employee. In addition it specifies how to address security breaches. It should not state exactly which hardware, software, architecture, or protocols will be used to ensure security, nor how hardware or software will be installed and configured. A security policy must address an organizations specific risks. to understand your risks, you should conduct a security audit that identifies vulnerabilities and rates both the severity of each threat and its likelihood of occurring. Security Policy Content Security policy content should… Policies for each category of security Explain to users what they can and cannot do and how these measures protect the networks security Should define what confidential means to the organization Response Policy A security policy should provide for a planned response in the event of a security breach. The response policy should identify the members of a response team, all of whom should clearly understand the the security policy, risks, and measures in place. Some of the roles concerned could include… Dispatcher – the person on call who first notices the breach Manager – the person who coordinates the resources necessary to solve the problem Technical Support Specialist – the person who focuses on solving the problem Public relations specialist – the person who acts as the official spokesperson for the organization Physical Security An important element in network security is restricting physical access to its components. There are various techniques for this including locking doors, security people at access points etc. You should identify the following… Which rooms contain critical systems or data and must be secured Through what means might intruders gain access to these rooms How and to what extent are authorized personnel granted access to these rooms Are authentication methods such as ID cards easy to forge etc. Security in Network Design The optimal way to prevent external security breaches from affecting you LAN is not to connect your LAN to the outside world at all. The next best protection is to restrict access at every point where your LAN connects to the rest of the world. Router Access List – can be used to filter or decline access to a portion of a network for certain devices. Intrusion Detection and Prevention While denying someone access to a section of the network is good, it is better to be able to detect when an attempt has been made and notify security personnel. This can be done using IDS (intrusion detection system) software. One drawback of IDS software is it can detect false positives – i.e. an authorized person who has forgotten his password attempts to logon. Firewalls A firewall is a specialized device, or a computer installed with specialized software, that selectively filters or blocks traffic between networks. A firewall typically involves a combination of hardware and software and may reside between two interconnected private networks. The simplest form of a firewall is a packet filtering firewall, which is a router that examines the header of every packet of data it receives to determine whether that type of packet is authorized to continue to its destination or not. Firewalls can block traffic in and out of a LAN. NOS (Network Operating System) Security Regardless of the operating system, generally every network administrator can implement basic security by restricting what users are authorized to do on a network. Some of the restrictions include things related to Logons – place, time of day, total time logged in, etc Passwords – length, characters used, etc Encryption Encryption is the use of an algorithm to scramble data into a format that can be read only by reversing the algorithm. The purpose of encryption is to keep information private. Many forms of encryption exist and new ways of cracking encryption are continually being invented. The following are some categories of encryption… Key Encryption PGP (Pretty Good Privacy) SSL (Secure Sockets Layer) SSH (Secure Shell) SCP (Secure CoPy) SFTP (Secure File Transfer Protocol) IPSec (Internet Protocol Security) For a detailed explanation on each section refer to pages 596 to 604 of textbook Authentication Protocols Authentication protocols are the rules that computers follow to accomplish authentication. Several types exist and the following are some of the common authentication protocols… RADIUS and TACACS PAP (Password Authentication Protocol) CHAP and MS-CHAP EAP (Extensible Authentication Protocol) 802.1x (EAPoL) Kerberos Wireless Network Security Wireless transmissions are particularly susceptible to eavesdropping. The following are two wireless network security protocols WEP WPA

    Read the article

< Previous Page | 87 88 89 90 91 92 93 94 95 96 97 98  | Next Page >