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  • HOSTNAME environment variable on Linux

    - by infogrind
    On my Linux box (Gentoo Linux 2.6.31 to be specific) I have noticed that the HOSTNAME environment variable is available in my shell, but not in scripts. For example, $ echo $HOSTNAME returns xxxxxxxx.com, but $ ruby -e 'puts ENV["HOSTNAME"]' returns nil On the other hand, the USER environment variable, for instance, is available both in the shell and in scripts. I have noticed that USER appears in the list of environment variables that appears when I type export i.e., declare -x USER="infogrind" but HOSTNAME doesn't. I suspect the issue has something to do with that. My questions: 1) how can I make HOSTNAME available in scripts, and 2) for my better understanding, where is this variable initially set, and why is it not "exported"?

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  • View Security Server and Direct Connection

    - by Poort443
    I have a Security Server for my connections from the Internet. This works fine, accept when I enable "Direct Connection to the desktop". I found the following statement on this: If you bypass the secure connection, the client must establish a direct RDP communication to the desktop virtual machine over RDP (port 3389). Does this mean I have to open 3389 (RDP) to the Internet if I want to use Direct Connections? If I disable Direct Connections to get my Security Server working, I have to disable it on my Connection Server. It's my understanding that this means that if I reboot my Connection Server, all the View clients get disconnected. Is there a way I can disable "Direct Connections" for the Security Server, while enabling it for access from the LAN? Tia.

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  • mod_proxy failing as forward proxy in simple configuration

    - by Stabledog
    (On Mac OS X 10.6, Apache 2.2.11) Following the oft-repeated googled advice, I've set up mod_proxy on my Mac to act as a forward proxy for http requests. My httpd.conf contains this: <IfModule mod_proxy> ProxyRequests On ProxyVia On <Proxy *> Allow from all </Proxy> (Yes, I realize that's not ideal, but I'm behind a firewall trying to figure out why the thing doesn't work at all) So, when I point my browser's proxy settings to the local server (ip_address:80), here's what happens: I browse to http://www.cnn.com I see via sniffer that this is sent to Apache on the Mac Apache responds with its default home page ("It works!" is all this page says) So... Apache is not doing as expected -- it is not forwarding my browser's request out onto the Internet to cnn. Nothing in the logfile indicates an error or problem, and Apache returns a 200 header to the browser. Clearly there is some very basic configuration step I'm not understanding... but what?

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  • StructureMap Configuration Per Thread/Request for the Full Dependency Chain

    - by Phil Sandler
    I've been using Structuremap for a few months now, and it has worked great on some smaller (green field) projects. Most of the configurations I have had to set up involve a single implementation per interface. In the cases where I needed to choose a specific implementation at runtime, I created a factory class that used ObjectFactory.GetNamedInstance<(). In the smaller projects, there were few enough of these cases where I was comfortable with the references to ObjectFactory. My understanding is that you want to limit these references as much as possible, and ideally only reference the ObjectFactory once. I am working to refactor a larger codebase to use IOC/StructureMap, and am finding that I may need many of these factory classes with ObjectFactory references to get what I need. Essentially, I am creating a "root service" with the ObjectFactory, so that everything in the dependency chain is managed by the container. The root service is created by name (i.e. "BuildCar", "BuildTruck"), and the services needed deeper in the dependency chain could also be constructed using the same name--so the "IAttachWheels" service could vary based on whether a car or truck is being built. Since the class that depends on IAttachWheels is the same in both configurations, I don't think I can use ConstructedBy in the registry to choose the implementation. Also, to be clear, the IAttachWheels implementations need to be managed by the container as well, because the dependency chain runs fairly deep. I looked briefly at Profiles as an option, but read (here on StackOverflow) that changing profiles essentially changes implementations for all threads. Is there a feature that is similar to profiles that is thread/request specific? Is the factory class that references ObjectFactory approach the right way to go? Any thoughts would be appreciated.

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  • Upgrading php, mysql, and apache

    - by Kevin
    I have been looking around and have not found a good answer to my question. I currently have php 5.3.3 installed via yum on my centos 6.3 server. I need to upgrade to php 5.10 or later. It is my understanding that you need to find the correct mysql and apache packages that fit with the php install. Can someone please point me in the direction of a an update guide? Btw I am not looking for "yum update httpd php5" this gets me the old 5.3.3 version. Thanks, Kevin.

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  • Terminate function on System.in .. possible?

    - by Ronald
    I am currently working on a project where I have to make an agent to interact with a server. Each 50ms, the server will receive the last thing I outputted to System.out and send me a new set of lines as a 'state' through the System.in printstream to analyze and send my next message to System.out. Also, if the server receives multiple outputs from me, it only regards the most recent one. .. As for my question: My program originally constructed a tree and then analyzed each leaf node to see which would be optimal, and then waited around for the next input, but I can recursively do a deeper tree search that would make my output 'better' (and again and again to keep returning a better result). Using this and the fact that if the server receives multiple outputs, it only takes the most recent one, I could do each level, print my result and start the next level. But here comes my problem... I can't be stuck in some complex algorithm while I am supposed to receiving the next input as I will then miss it. So I was wondering if there is a way to cancel anything else I am doing when I receive something via System.in and then go back to the beginning of the function and start the search again with the new set of input (and rinse and repeat..) I hope this all makes sense, Thank ye all

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  • Is app stability unusually hard with Java?

    - by wrp
    Java's extensive libraries and tool support are appealing, but I've never tried developing with it because most Java applications I've used have been extremely buggy. This has me puzzled, because I hear that Java is the dominant platform for enterprise development. Maybe it's fine for server-side stuff but not desktop applications. I'm not talking about things like the long compile/startup times or the random latencies due to garbage collection. This is about things just going wrong. Some of the most common problems I see are: corrupted icons corrupted fonts, in menus usually and editing areas sometimes inaccurate framing of GUI elements dialogs sometimes popping up blank Maybe the problems are mostly with Swing. I've rarely used a Java application long enough to find deeper issues. I can think of a few possible explanations for what I've experienced: It's possible to write stable apps with Java, just harder. Java apps are always buggy and enterprise users just put up with it. Server-side apps are fine because just Swing is buggy. I'm living under a curse and need the services of a good witchdoctor.

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  • Single email Stuck in Backend Exchange Queue

    - by Kyle Brandt
    I have an outgoing message that has and is stuck in a queue on my backend mail server. The queue is: Internet Mail SMTP Connector (MY_FRONT_END_SERVER_NAME)-524350ff... It is in state retry with 183 failures. It is only one message and all other mail is flowing. The message is not particularly large. My limited understanding, a guess really, is that this message should get handed off to the front end mail server and sent to the remote hosts for which it is destined, so it should even matter if the remote host is up. However, I can telnet to the smtp provider of that host. How can I find out why it is stuck in this queue, and can I force it out somehow (unfreeze doesn't help me)?

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  • How to explain DRM cannot work?

    - by jerryjvl
    I am looking for the shortest comprehensive way to explain to people that are trying to use DRM as a technology to prevent users from using their data in some fashion deemed undesirable, why their solution cannot work by definition. Ideally I'd like something that: Covers why technically it is impossible to have people access local data, but only in such-and-such a way Imparts an understanding of why this is, to avoid follow-on "But what if" rebuttals Is intuitive enough and short enough that even a politician (j/k) could grasp it When faced with this situation I try to be clear and concise, but I usually end up failing at least on one of these points. I'd really like to have a 'stock' answer that I can use in the future.

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  • Difference between MVC FilterAttribute and Filter

    - by zaaaaphod
    I'm trying to write my own custom AuthorizationAttribute that uses DI. I'm using the MUNQ IoC provider for it's speed and have decided to use constructor injection on all my classes as opposed to post instatiation property binding (because I prefer it). I'm trying to write a custom IFilterProvider that will use my IoC container to return requests for filters (so that I can map concrete classes using the container). I've come up with the following. public class FilterProvider : IFilterProvider { private readonly IocContainer _container; public FilterProvider(IocContainer container) { _container = container; } public IEnumerable<Filter> GetFilters(ControllerContext controllerContext, ActionDescriptor actionDescriptor) { var x = Enumerable.Union<Object>(_container.ResolveAll<IActionFilter>(), _container.ResolveAll<IAuthorizationFilter>()); foreach (Filter actionFilter in x) yield return new Filter(actionFilter, FilterScope.First, null); } } The above code will fail during the foreach because my objects that implement IAuthorizationFilter are based on FilterAttribute and not Filter My question is, what is the difference between Filter and FilterAttribute? I would have thought that there would have been a common link between them, unless I'm missing something. Another deeper question is, how come there is no IFilterAttributeProvider that would support IEnumerable GetFilters(...) Is there some other way that I should be using to resolve IAuthorizationFilter via my IoC container? Thank you very much for your help. Z

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  • Restoring exchange 2003 from a backup

    - by user64204
    Hi all, I'm restoring an Exchange server from a backup: [1] the backup was created on 19/12/2010 [2] the server kept running until 20/12/2010 [3] we're restoring the server today 21/12/2010 with the backup from [1] My understanding is that when the server comes back: [4] whatever is in users' inbox since [1] will be deleted. [5] whatever is in users' sent box since [2] should be re-sent. [6] As a safety measure we've moved all emails sent/received between [1] and [3] to .PST files. Questions: -are [4] & [5] statements correct? -is there any way to move back emails from the PST file [6] to the current inbox/sent folders so that Exchange takes these emails into account (instead of deleting them)? -what happens to the Calendar items that were added after [1], is there any way to back those up as well if needed? Many thanks

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  • What are the major distinctions between PureDarwin and FreeBSD?

    - by ??????? ???????????
    I'm looking to install a different unix on my workstation to acquire some perspective on GNU/Linux and out of curiosity. I have narrowed my options down to these two. The reason for considering PureDarwin is because I have very little experience with Apple's products. So my question is will installing and using PureDarwin give me a closer understanding of OSX than would running FreeBSD? What I have in mind are day to day routines like adding users, installing software and configuring various aspects of the underlying OS. I know that the GUI of OSX would not be available, but that is not a concern. As a secondary, less important question, can I buy OS X in the apple store and run it in a virtual machine or does that violate their EULA?

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  • Should we install the OS on an SSD or not when running virtual machines?

    - by Raghu Dodda
    I have a new Dell Mobile Precision M6500 laptop with 8 GB RAM. it has two hard drives - 500 GB @7200 RPM and a 128 GB SSD. The main purpose of these laptop is software development in virtual machines. The plan is to install the base OS (Windows 7) and all the programs in the 500 GB drive, and let the SSD only contain the virtual machine images. It is my understanding that the we get most performance from the virtual machines if the images are on a separate hard drive than the base OS. Is this the way to go, or should I install the OS on the SSD as well? What are the pros and cons? The virtual machine images would be between 20 - 30 GB, and I might run 1 or 2 at a time.

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  • ActionScript 3.0 Color Output Error?

    - by TheDarkIn1978
    I'm employing color in a current AS3 project, and have come across what appears to be an error in the Flash Player (version 10). it might also be an error with Apple's DigitalColor Meter (version 3.7.2), which is what i'm using to sample the displayed colors on Mac OS X Snow Leopard (version 10.6.3). //Primary, secondary, and tertiary colors of the RGB color wheel var red:Number = 0xFF0000; var orange:Number = 0xFF7D00; var yellow:Number = 0xFFFF00; var chartreuse:Number = 0x7DFF00; var green:Number = 0x00FF00; var spring:Number = 0x00FF7D; var cyan:Number = 0x00FFFF; var azure:Number = 0x007DFF; //reads 0x0077FF var blue:Number = 0x0000FF; var violet:Number = 0x7D00FF; var magenta:Number = 0xFF00FF; //reads 0xFF00F8 var rose:Number = 0xFF007D; //reads 0xFF0077 all of these colors display normally except for 3: Azure, Magenta and Rose. they are coded with the appropriate number, but when i use the color meter to sample the displayed colors, those 3 return inaccurate results. anyone have any insight about this issue? what is causing the error, the Flash runtime or the color sampler? if it's the Flash player, could this problem be much deeper? *sampling this image will return inaccurate results due to .jpg compression. it's simply for illustration

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  • How to collect figures of traffic used per-host, broken up by time and destination?

    - by Seishun
    We have a relatively small network, all PSs in one subnet. One PC with two NICs and pfSense installed works as a firewall/router. There is an OpenVPN tunnel to a remote location, created as a site-to-site connection to another pfSense box there. I have an assignment to capture, store and show (via a web interface) information on traffic generated (both incoming and outcoming) by each host on our subnet and present it in several views: megabytes per calendar hours / days / months / years (that is, not just "one month back", but "in Dec 2010" and so on); megabytes per destination: VPN to remote location / other destinations / Google Apps servers. I tried the software packages in pfSense that offer traffic montoring - but it seems they don't store the information fixed by months, instead showing the amounts of traffic generated in periods (days/months/etc) calculated from the present moment. I'm also interested in understanding what would be the best way for me to break up traffic by hosts and destinations. I'm open to all suggestions, even if they mean that I will have to understand something new to me.

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  • a friendly elaboratation on how iceweasel misses as recent request was discovered in post tut

    - by v3x3n
    I would like to specify what you asked about in how iceweasel misses on in hopes that you are interested in considering the answer to be valid considering the package should run efficient to a novice user especially when getting a first impression on a new software, browser, or package they are given by default. First let me say that I am very grateful for all debian has and continues to do for its user base and I am not complaining, only hoping that in mentioning such it will eventually aid in improving the disappointing experience iceweasel gave me in multiple ways right from the start of using it. I am sure tremendous amounts of hard work went into making it work as well as it does, and tremendous effort continues to go into IW like the rest of the package and distros such as this... Having said that, I do aim to keep my examples simple as possible but also explained in enough detail as to not leave out important info to get a full idea of my issue... (Thanks for understanding if I sound novice to debian, I am but continue to learn and advance by trial and error each day, and of course the wonderful help from all the great minds available here and there)... Well, my bone to pick (unfortunately as I disdain being a complainer when so much has been done for us, the end user) with IW is mainly 3 immediately noticed problems in offering me a smooth test drive (completely normal browsing conduct of your average user, I should indicate) as soon as I started out a task using IW (heading directly to google images and searched for a few web sized images, then saved a few (no more than 800 to 900 in dimensions, typically a normal procedure I would imagine) I experienced a horrendous reoccurring freeze and lag time that almost left me to kill the process more than once on each attempt and continued to compound so that by a few attempts later, even 1 single image save locked up the entire browser, ultimately giving up on my procedure in its simplicity with a bit of aggravation, if there was something I had done wrong on my end pre-attempt or during installation. Secondly, visiting video player sites in this case youtube will not allow for any video feed to play whatsoever and again, experienced a slight freezing that eventually dissipated as long as I didn't attempt to press play or reload another video trial... Very annoying and possibly related to my first issue (which could rely on my own lack of knowledge in setup config, but that troubles me if so).... Lastly as another user has stated already, in which brought you to ask them what exactly seemed to be the problem in the first place is also my final straw that broke the weasel's back, leading me here to find a solution to a updated version of firefox... being that iceweasel (an apparent build of firefox 17.x.x) leaving the user to find themselves out of luck when installing their favorite or much useful add-ons or plugins that aid their task or normal usage online.... As the other user clearly stated... there is almost zero options and barely any luck to find compatible plugins with such an outdated version still being used... I can only imagine if as a novoice or standard user to linux... and beginner to debian (which I am all for btw!) if I am discovering major conductivity issues which hinder normal user conduct right off the bat... that there is probably a bundle or more of security vulnerabilities that would unravel to me if I continued to give mr Hommey's package any further attention, or interest in continuing to use... This is a deal breaker on any account, unless all 3 of these issues stated are due to a very n00berish setting or lack thereof (which if that is the case, such was not properly stated for beginner in any place available by following installation tutorials such as LVM installers, which I felt lacked a clear understanding to someone who is trying to learn why and how, rather than, a fix to a potentially broken out of box installation... I really think that is irrelevant in any case however, as there is much step by step support regarding that kind of thing, just saying... its very challenging, along side a job to keep deadlines on, and the need to learn a better and more costomizible system, that was not as popularized when I became a dev via windows (OK OK I know thats a huge mistake and now I am way off original topic but anyway) Thanks very much for taking the time to read over this, and I hope it honestly gives you a few good and valid reasons for users wanting and seeking a way to get around iceweasel altogether... Finally, if I am missing something vital that renders all I've stated invalid or useless, please feel free to shove that elephant in the room my direction! Thanks for all you do, as I am sure it is very useful and dedicated, being you are a debian maintainer, and super user! Much love for intelligence, freedom and sharing the secrets of the web! May it remain unregulated and a good place to grow and learn for generations to come! Stay true! Take care now! -v3x (v3x @ gmx .com)

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  • How to revert to "last known good configuration"

    - by Ripley
    Hi Guys. I failed to install ubuntu 10.04 with WUBI, for some reason it's showing me the root partion is not defined. I'm bored to fight with it so I just removed ubuntu in windows. However this installation made my original Windows XP cripple, a normal boot will end up with a blue screen, error code 7E, I'm still able to boot with the 'last known good configuration' tho. My understanding is booting like this will recover things and I'm supposed to be good when reboot, while this is not the case for me, I have to choose the 'boot from last known good configuration' each and every time to work around the blue screen. Could you suggest how could I resolve this? I feel it's foolish having to waste 10 more seconds each time starting the OS.

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  • SSL on Apache seems to significantly affect WebDAV performace

    - by takesides
    I'm using Apache 2.2 running on Windows Server 2008 R2 as a WebDAV server for clients to upload large media files (roughly 100-2000MB). I am finding that when I have SSL enabled (openSSL 0.9.8o) and use HTTPS for the uploads the throughput is around 13Mbps but when I disable it and just use HTTP I get around 80Mbps. I can't understand why this is happening as my understanding was that the heavy SSL work was done at the beginning of the connection. Does anyone have any idea why the performance is so drastically affected by enabling SSL? Cheers.

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  • Is IPv6 multicast routable over the Internet?

    - by Absolom
    As I understand it, public IPv6 addresses allocated by the IANA will have the prefix 2000::/3. These ip addresses will be routable through the Internet. IPv6 multicast addresses on the other side are prefixed FF00::/8. So my understanding is that the ipv6 multicast addresses won't be routable through the internet. I am right? If so, is there any way to do one-to-many ip routing over the Internet in IPv6? Thanks!

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  • Exchange 07 to 07 mailbox migration using local continuous replication

    - by tacos_tacos_tacos
    I have an existing Exchange Server ex0 and a fresh Exchange Server ex1, both 2007SP3. The servers are in different sites so users cannot access mailboxes on ex1 as from my understanding, a standalone CAS is required for this. I am thinking of doing the following: Enable local continous replication of the storage group on ex0 to a mapped drive that points to the corresponding storage group folder on ex1 At some point when the replication is done (small number of users and volume of mail), say on a late night on the weekend, disable CAS on ex0 (or otherwise redirect requests on the server-side from ex0 to ex1) AND change the public DNS name of the CAS so that it points to ex1. Will my plan work? If not, please explain what I can do to fix it.

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  • How to set/keep directory permissions?

    - by Dylan
    I'm using CwRsync to connect from my Windows development machine to a linux webserver : rsync -avuz -e ./ssh --exclude=".svn" /cygdrive/c/xampp/htdocs/project123/ [email protected]:/home/user123/public_html This syncs my development project directory nicely and fast to the server. But after doing this, all directory properties are reset to the local user user123 only, so the website is not available anymore. I need to manually reset those properties. Why is this happening, and how to prevent it? PS. coming from a Windows environment I'm having a really hard time understanding rsync. I copied the above command from some examples... just need to get this one small thing working too...

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  • Bootable backup for Windows (7) - Like Super Duper for Mac

    - by Dan F.
    Just got an SSD installed on my notebook and as people suggested I want have my bases covered in case it fails and I expect it to fail. Here is what I have in mind... keep a partition on the main drive (HDD) the same size as the SSD and keep a "clone" there, and in case the SSD fails... I take the SSD out and boot from the clone partition. From my understanding SuperDuper! does just that for MacOS, but I don't seem to find a something similar. I've found a lot of great tools out there that enables you to make bootable images (CloneZilla, DriveImage XML, Acronis® True Image™ to name a few), that is not what I'm looking for.

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  • Filtering downloading a file

    - by Ozgun Sunal
    people. i know there are several types of firewalls operating at different layers of OSI. ACLs(layer 3 firewalls filter based on port numbers and IP addresses), SPI(which examines the patterns of data at layer 3 and realise that data content is malicious or not) and application layer firewalls which is capable of understanding the data at that level. Considering this, i'll give an example and learn what i need to do. Lets say, we have a computer has access to the Internet. i want to download a file or display a web page from a website but block access to the another website/s or downloading. To do this, i cant block access to the web browser on the 3rd party firewall bcos that will shut down all access. ACLs wont already do it. So, which kind of firewall will make it possible to filter specific traffic and how?

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  • What does the term 'overinstallation' mean?

    - by Kent Pawar
    I came across this term here: "11882875 -- Essbase Server does not start after an overinstallation." I know that a clean install is a software installation in which any previous version is removed. Googling 'overinstallation' turned up nothing, and I don't like to just assume it simply means 're-install'. UPDATE: So my understanding now is - the term "re-install" can be a bit ambiguous as it could either signify an installation after an uninstallation or otherwise. On the other hand the term "over-installation" specifically talks about installing something over an existing installation, that involved no uninstallations.

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  • How to sync (or at least view) public / team / shared calendar to Blackberry using BES?

    - by 3rdparty
    Trying to allow 3 people to view and ideally sync (create/edit) common (team) calendar events via Blackberry and hosted Exchange 2007 BES. My understanding is that BES does not support anything other than a users primary calendar to be synced wirelessly. From what I've researched the only supported workflow is for user to create event in public calendar on Outlook and then invites team members individually as optional attendees so event displays in their calendar (and on their Blackberry). I've seen some 3rd party utilities that claim to support syncing of public folders/calendars: Add2Outlook: http://www.diditbetter.com/add2outlook.aspx WICKSoft: http://www.wicksoft.com/contacts_calendars.htm (needs to be installed on local Exchange server) I've also been told I can sync public/other calendars using Desktop Manager, but I need to avoid any tethered sync with this environment. Am I missing an easier workflow here? There must be tens of thousands of BES users that require the ability to/view share a public, shared or team calendar on their Blackberry. How can I solve this?

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