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  • Loading another domain's content in a modal iframe - acceptable?

    - by user568458
    Is it okay to load another page in an iframe in a modal pop-up window - in terms of legal and ethical standards around displaying 3rd party content? I remember a few years ago there was controversy and a debate about whether it was okay to load another domain's page content on your domain in a full-width iframe, with your site providing a masthead with controls for favouriting, linking etc (e.g. like StumbleUpon). I seem to recall that the consensus was, that it was okay so long as you were clearly in no way claiming ownership of the 3rd party content or attempting to modify the content and so long as there was a 'go to site' button or equivalent; and that sites could ask you to exclude them, but generally speaking, it's an acceptable practice. How acceptable would it be considered to be to load another site's page within a modal (lightbox-like) popup box (following all the above principles: clear attribution and a prominent button that kills the iframe and gives them the 3rd party original)? My expectation would be that it would follow the same principles, and be acceptable so long as these conditions were met. Note that I'm asking about the likely legitimate responses of the 3rd party sites and possible legal position, not about usability or UX. I'm aware that this should never ever ever ever ever be the standard way external links are loaded, and that 99% of the time linking to external content like this would be terrible for usability. My specific use case is one of those 1% of cases where loading a separate page in this tab actually wouldn't be the expected behaviour of a link: an interactive data visualisation tool that also acts as a 'browser' of external content (science papers underlying the data it navigates). All other links within the interactive will change something while staying on the same page. If the user clicked one of these external links by mistake (as people often do, even when they are clearly, noisily labelled) and then had to back-button back, they would lose their fine-grained position in the interactive tool (jquery bbq hashchanges being not appropriate for all elements of the tool). New window/tab will simply open the target page on the 3rd party domain. Opening a new window/tab would also be an alternative option (and has its own disadvantages) - my question is, whether this is an alternative that could be considered (in terms of acceptable practice around intellectual property etc), irrespective of which option is best for UX: which is something we'll decide the proper way, based on actual UX testing.

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  • Write and fprintf for file I/O

    - by Darryl Gove
    fprintf() does buffered I/O, where as write() does unbuffered I/O. So once the write() completes, the data is in the file, whereas, for fprintf() it may take a while for the file to get updated to reflect the output. This results in a significant performance difference - the write works at disk speed. The following is a program to test this: #include <fcntl.h #include <unistd.h #include <stdio.h #include <stdlib.h #include <errno.h #include <stdio.h #include <sys/time.h #include <sys/types.h #include <sys/stat.h static double s_time; void starttime() { s_time=1.0*gethrtime(); } void endtime(long its) { double e_time=1.0*gethrtime(); printf("Time per iteration %5.2f MB/s\n", (1.0*its)/(e_time-s_time*1.0)*1000); s_time=1.0*gethrtime(); } #define SIZE 10*1024*1024 void test_write() { starttime(); int file = open("./test.dat",O_WRONLY|O_CREAT,S_IWGRP|S_IWOTH|S_IWUSR); for (int i=0; i<SIZE; i++) { write(file,"a",1); } close(file); endtime(SIZE); } void test_fprintf() { starttime(); FILE* file = fopen("./test.dat","w"); for (int i=0; i<SIZE; i++) { fprintf(file,"a"); } fclose(file); endtime(SIZE); } void test_flush() { starttime(); FILE* file = fopen("./test.dat","w"); for (int i=0; i<SIZE; i++) { fprintf(file,"a"); fflush(file); } fclose(file); endtime(SIZE); } int main() { test_write(); test_fprintf(); test_flush(); } Compiling and running I get 0.2MB/s for write() and 6MB/s for fprintf(). A large difference. There's three tests in this example, the third test uses fprintf() and fflush(). This is equivalent to write() both in performance and in functionality. Which leads to the suggestion that fprintf() (and other buffering I/O functions) are the fastest way of writing to files, and that fflush() should be used to enforce synchronisation of the file contents.

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  • AWS EC2 Oracle RDB - Storing and managing my data

    - by llaszews
    When create an Oracle Database on the Amazon cloud you will need to store you database files somewhere on the EC2 cloud. There are basically three places where database files can be stored: 1. Local drive - This is the local drive that is part of the virtual server EC2 instance. 2. Elastic Block Storage (EBS) - Network attached storage that appears as a local drive. 3. Simple Storage Server (S3) - 'Storage for the Internet'. S3 is not high speed and intended for store static document type files. S3 can also be used for storing static web page files. Local drives are ephemeral so not appropriate to be used as a database storage device. The leaves EBS which is the best place to store database files. EBS volumes appear as local disk drives. They are actually network-attached to an Amazon EC2 instance. In addition, EBS persists independently from the running life of a single Amazon EC2 instance. If you use an EBS backed instance for your database data, it will remain available after reboot but not after terminate. In many cases you would not need to terminate your instance but only stop it, which is equivalent of shutdown. In order to save your database data before you terminate an instance, you can snapshot the EBS to S3. Using EBS as a data store you can move your Oracle data files from one instance to another. This allows you to move your database from one region or or zone to another. Unfortunately, to scale out your Oracle RDS on AWS you can not have read only replicas. This is only possible with the other Oracle relational database - MySQL. The free micro instances use EBS as its storage. This is a very good white paper that has more details: AWS Storage Options This white paper also discusses: SQS, SimpleDB, and Amazon RDS in the context of storage devices. However, these are not storage devices you would use to store an Oracle database. This slide deck discusses a lot of information that is in the white paper: AWS Storage Options slideshow

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  • MOSSLover Lives On&hellip;

    - by MOSSLover
    A while back, maybe 6 months, I got some bad news about 2010.  Microsoft was removing Office from the MOSS equivalent of 2010, so basically my alias would be obsolete the second 2010 caught on in the community.  I thought about it for some time.  I had some discussions with friends in the community.  I even noticed that the MOSSMan changed his twitter id.  I started my blog around a WSS 3.0 project when I worked for LRS in there St. Louis Office in February/March 2007.  So I think it’s fitting to keep the name, because my community involvement centers around 2007.  My first ever speaking ordeal was at the Kansas City Office Geeks meeting in November of 2007 on Disaster Recovery where about three people attended.  The first user group meeting I ever attended was around the month of June 2007 at the KC .Net User Group about two weeks after my braces were installed.  It’s definitely fitting to say that 2007 paved the way for everything that happened in the past 2/2 1/2 years.  If anyone asks what MOSSLover means I added a description on twitter and I also added my name.  I added my name for other reasons, because I’m sick of people thinking I am the guy in the photo.  Also, I’d like people to recognize me for who I am.  Everyone should expect less of the hat in the upcoming year and more of my hair.  I’ve taken a vow to wear the hat less and less this year.  I am sick of buying hats, plus I want to move forward to gain more self confidence.  The hat does not really help.  I will still wear a t-shirt and jeans in most of my presentations.  That is who I am and it will not change any time soon.  If you expect to see me in a skirt good luck with that as it won’t be happening unless I am forced at gun point.  I hope you guys have a good weekend.  Later all… Technorati Tags: MOSSLover,Cardinal's Hat,Becky Isserman

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  • Problem Solving vs. Solution Finding

    - by ryanabr
    By enlarge, most developers fall into these two camps I will try to explain what I mean by way of example. A manager gives the developer a task that is communicated like this: “Figure out why control A is not loading on this form”. Now, right there it could be argued that the manager should probably have given better direction and said something more like: “Control A is not loading on the Form, fix it”. They might sound like the same thing to most people, but the first statement will have the developer problem solving the reason why it is failing. The second statement should have the developer looking for the solution to make it work, not focus on why it is broken. In the end, they might be the same thing, but I usually see the first approach take way longer than the second approach. The Problem Solver: The problem solver’s approach to fixing something that is broken is likely to take the error or behavior that is being observed and start to research it using a tool like Google, or any other search engine. 7/10 times this will yield results for the most common of issues. The challenge is in the other 30% of issues that will take the problem solver down the rabbit hole and cause them not to surface for days on end while every avenue is explored for the cause of the problem. In the end, they will probably find the cause of the issue and resolve it, but the cost can be days, or weeks of work. The Solution Finder: The solution finder’s approach to a problem will begin the same way the Problem Solver’s approach will. The difference comes in the more difficult cases. Rather than stick to the pure “This has to work so I am going to work with it until it does” approach, the Solution Finder will look for other ways to get the requirements satisfied that may or may not be using the original approach. For example. there are two area of an application of externally equivalent features, meaning that from a user’s perspective, the behavior is the same. So, say that for whatever reason, area A is now not working, but area B is working. The Problem Solver will dig in to see why area A is broken, where the Solution Finder will investigate to see what is the difference between the two areas and solve the problem by potentially working around it. The other notable difference between the two types of developers described is what point they reach before they re-emerge from their task. The problem solver will likely emerge with a triumphant “I have found the problem” where as the Solution Finder will emerge with the more useful “I have the solution”. Conclusion At the end of the day, users are what drives features in software development. With out users there is no need for software. In todays world of software development with so many tools to use, and generally tight schedules I believe that a work around to a problem that takes 8 hours vs. the more pure solution to the problem that takes 40 hours is a more fruitful approach.

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  • IPS Package Groups

    - by Alan_Solaris_RE
    IPS group packages consist solely of dependencies on other packages that make up a logical grouping of software. These are similar to, but not the equivalent of, Solaris 10 metaclusters. The main difference is that metaclusters are nested subsets ranging from a minimal install to nearly all packages on the media. Group packages have no such hierarchy. They can overlap other groups, or be completely disjoint sets. A group dependency is set this way in an IPS package manifest file: depend fmri=full/pkg/name type=group Current Solaris Groups Solaris currently has 4 system groups defined. These are used for different types of installation, and are included in the xml manifest files used by the various Solaris installers: Package Name Summary Description Default Installation For:  group/system/solaris-desktop Oracle Solaris Desktop Provides an Oracle Solaris desktop environment Live Media  group/system/solaris-large-server Oracle Solaris Large Server Provides an Oracle Solaris large server environment Text Installer  group/system/solaris-small-server Oracle Solaris Small Server Provides a useful command-line Oracle Solaris environment  Zones  group/system/solaris-auto-install  Oracle Solaris Automated Installer Client  Provides an Oracle Solaris Automated Installer client  Automated Installer There are also several "feature" groups such as AMP and GNU Developer Tools. These are provided for convenience, but are not used directly by any installers. Retrieving Group Package Information A listing of all current groups can be found with the command: pkg info -r group/* A listing of all the packages in a group can be obtained with: pkg contents -o fmri -H -rt depend -a type=group groupname An example: $ pkg contents -o fmri -H -rt depend -a type=group solaris-desktop archiver/gnu-tar audio/audio-utilities codec/flac codec/libtheora codec/ogg-vorbis codec/speex communication/im/pidgin etc. You can determine which package group is currently installed on your system: $ pkg list group/system/\* Output would look like: NAME (PUBLISHER) VERSION IFO group/system/solaris-desktop 0.5.11-0.175.0.0.0.0.0 i-- Note that there are not version numbers associated with a group package dependency. The package version that best fits the system will be used, based on other dependencies such as what is listed in incorporation files. Installing a Group To Install a group, simple use the group package name as you would any other package: $ pkg install solaris-small-server  If you want to exclude a package from installing, you can use the --reject flag: $ pkg install --reject audio/audio-utilities solaris-desktop Creating Your Own Group To create your own group package, you can follow the pkg(5) documentation on how to create a package, and use this action for each package that is part of your group:   depend fmri=full/pkg/name type=group

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  • How do you conquer the challenge of designing for large screen real-estate?

    - by Berin Loritsch
    This question is a bit more subjective, but I'm hoping to get some new perspective. I'm so used to designing for a certain screen size (typically 1024x768) that I find that size to not be a problem. Expanding the size to 1280x1024 doesn't buy you enough screen real estate to make an appreciable difference, but will give me a little more breathing room. Basically, I just expand my "grid size" and the same basic design for the slightly smaller screen still works. However, in the last couple of projects my clients were all using 1080p (1920x1080) screens and they wanted solutions to use as much of that real estate as possible. 1920 pixels across provides just under twice the width I am used to, and the wide screen makes some of my old go to design approaches not to work as well. The problem I'm running into is that when presented with so much space, I'm confronted with some major problems. How many columns should I use? The wide format lends itself to a 3 column split with a 2:1:1 split (i.e. the content column bigger than the other two). However, if I go with three columns what do I do with that extra column? How do I make efficient use of the screen real estate? There's a temptation to put everything on the screen at once, but too much information actually makes the application harder to use. White space is important to help make sense of complex information, but too much makes related concepts look too separate. I'm usually working with web applications that have complex data, and visualization and presentation is key to making sense of the raw data. When your user also has a large screen (at least 24"), some information is out of eye sight and you need to move the pointer a long distance. How do you make sure everything that's needed stays within the visual hot points? Simple sites like blogs actually do better when the width is constrained, which results in a lot of wasted real estate. I kind of wonder if having the text box and the text preview side by side would be a big benefit for the admin side of that type of screen? (1:1 two column split). For your answers, I know almost everything in design is "it depends". What I'm looking for is: General principles you use How your approach to design has changed I'm finding that i have to retrain myself how to work with this different format. Every bump in resolution I've worked through to date has been about 25%: 640 to 800 (25% increase), 800 to 1024 (28% increase), and 1024 to 1280 (25% increase). However, the jump from 1280 to 1920 is a good 50% increase in space--the equivalent from jumping from 640 straight to 1024. There was no commonly used middle size to help learn lessons more gradually.

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  • Encapsulating code in F# (Part 1)

    - by MarkPearl
    I have been looking at F# for a while now and seem a few really interesting samples and snippets on howto’s. This has been great to see the basic outline of the language and the possibilities, however a nagging question in the back of my mind has been what does an F# project look like? How do I code group code in F# so that it can be modularized and brought in and out of a project easily? My Expert F# book has an entire chapter (7) dedicated to this and after browsing the other chapters of the book I decided that this topic was something I really wanted to know more about now! Because of my C# background I keep trying to think in F# of objects. So to try and get a clearer idea of how to do things the F# way I am first going to take a very simplified C# example and try to “translate” it. using System; namespace ConsoleApplication1 { namespace ExampleOfEncapsulationInCSharp { class Program { static void EncapsulatedVariableInAMethod() { int count = 10; Console.WriteLine(count); } static void Main(string[] args) { EncapsulatedVariableInAMethod(); Console.ReadLine(); } } } } From the above example the count integer is encapsulated within EncapsulatedVariableInAMethod method. You couldn’t access the count variable from outside the scope of its parent method but have full access to it within the method. Lets look at my F# equivalent… open System let EncapsulatedVariableInAMethod = let count = 10 Console.WriteLine(count) () EncapsulatedVariableInAMethod Console.ReadLine()   Now, when I first attempted to write the F# code I got stuck… I didn’t have the Console.WriteLine calls but had the following… open System let EncapsulatedVariableInAMethod = let count = 10 EncapsulatedVariableInAMethod Console.ReadLine()   The compiler didn’t like the let before the count = 10. This is because every F# expression must evaluate to a value. If I did not want to make the Console call, I would still need to evaluate the expression to something – and for this reason the Unit Type is provided. I could have done something like…. open System let EncapsulatedVariableInAMethod = let count = 10 () EncapsulatedVariableInAMethod Console.ReadLine()   Which the compiler would be happy with…

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  • Is the Observer pattern adequate for this kind of scenario?

    - by Omega
    I'm creating a simple game development framework with Ruby. There is a node system. A node is a game entity, and it has position. It can have children nodes (and one parent node). Children are always drawn relatively to their parent. Nodes have a @position field. Anyone can modify it. When such position is modified, the node must update its children accordingly to properly draw them relatively to it. @position contains a Point instance (a class with x and y properties, plus some other useful methods). I need to know when a node's @position's state changes, so I can tell the node to update its children. This is easy if the programmer does something like this: @node.position = Point.new(300,300) Because it is equivalent to calling this: # Code in the Node class def position=(newValue) @position = newValue update_my_children # <--- I know that the position changed end But, I'm lost when this happens: @node.position.x = 300 The only one that knows that the position changed is the Point instance stored in the @position property of the node. But I need the node to be notified! It was at this point that I considered the Observer pattern. Basically, Point is now observable. When a node's position property is given a new Point instance (through the assignment operator), it will stop observing the previous Point it had (if any), and start observing the new one. When a Point instance gets a state change, all observers (the node owning it) will be notified, so now my node can update its children when the position changes. A problem is when this happens: @someNode.position = @anotherNode.position This means that two nodes are observing the same point. If I change one of the node's position, the other would change as well. To fix this, when a position is assigned, I plan to create a new Point instance, copy the passed argument's x and y, and store my newly created point instead of storing the passed one. Another problem I fear is this: somePoint = @node.position somePoint.x = 500 This would, technically, modify @node's position. I'm not sure if anyone would be expecting that behavior. I'm under the impression that people see Point as some kind of primitive rather than an actual object. Is this approach even reasonable? Reasons I'm feeling skeptical: I've heard that the Observer pattern should be used with, well, many observers. Technically, in this scenario there is only one observer at a time. When assigning a node's position as another's (@someNode.position = @anotherNode.position), where I create a whole new instance rather than storing the passed point, it feels hackish, or even inefficient.

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  • Where can I find comprehensive documentation on the various aspects of Linux?

    - by Fsando
    Whenever a problem pops up in my use of Linux (full time user for 6 years) I start by googling. The simplest (or most common) issues will usually be cleared right away. If it's not in one of those two categories the advise I find tend to be wrong, misguided, obsolete, and if you ask a question here on "ask" you risk being "duplicated" to some superficially similar question. Some issues have haunted me for years until I suddenly hit on the actual developer's documentation (or equivalent) which in a few lines explains how to solve my issue, the correct and consistent way. Whenever that happens I'm always kicking myself: why didn't I just go here to begin with? And the obvious answer is: "I had no idea this was what I was looking for". And for the issues that this hasn't yet happened I'm banging my head: "This ought to be either straight forward or someone tell me it's not doable" So my question is: Are there projects out there trying to collect or list this documentation in a searchable/browseable way. I know there are many very good "if you want this do that" tutorials on Ubuntu but I'm looking for actual documentation. That either are or could be collected in one place (at least conceptually) so that search for information could start in one place. I'm fully aware this is a broad question but if you approach it as: Does gnome have a comprehensive documentation project - where do I find it? Does Ubuntu have a comprehensive documentation project - where do i find it? For example: how exactly does the mime-type association work in Ubuntu and in xubuntu? How exactly are menus created (in Ubuntu: quicklists, xubuntu/gnome: the main menu) How exactly does the rendering process work for compiz/x? (I'm having this issue where windows randomly stops updating until somehow forced to resume (I guess). So for instance where do I look for logs that may indicate the problem. How may I change randr or other settings that may influence this issue. So my point is to organize exact documentation or preferably to find projects that do this already. Thanks! If answers to this question get me started I'm hoping to collect such a list.

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  • Configure IIS7.5 to allow calls to asmx web services.

    - by goodeye
    Hi, I migrated a site from IIS6 to Windows Server 2008 R2 IIS7.5. It has an asmx web service, which is working fine locally, but returns this 500 error when called from another machine: Request format is unrecognized for URL unexpectedly ending in /myMethodName The solution in previous versions is to add this to the web.config for the protocols needed (typically omitting HttpGet for production): <system.web> <webServices> <protocols> <add name="HttpGet" /> <add name="HttpPost" /> <add name="HttpSoap" /> </protocols> </webServices> </system.web> This is posted everywhere, including http://stackoverflow.com/questions/657313/request-format-is-unrecognized-for-url-unexpectedly-ending-in For IIS7.5, this throws a configuration error; I understand this section doesn't belong, but tried it anyway. I also boiled down the asmx call to a simple hello world. I tested with POST also, just to eliminate any issues with GET. What is the equivalent for IIS7.5? - either web.config format or the UI button to push would be really helpful. Thanks, Bob

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  • Run mplayer from bash in background without extra bash

    - by Emanuel Berg
    I would like to watch a movie with mplayer from bash in the background, like I do with all programs and there has never been any problems: mplayer Kick* & if you'd like to see Kickboxer, for example. But, this doesn't bring up the window, instead it says the process is stopped. I can bring the movie window up with fg mplayer, but then the CLI is unavailable. (This is -- as far as I can see anyway -- equivalent to mplayer Kick*). I'm able to work around the problem like this: $(mplayer Kick*) & But then I get two extra bashes (I see this with ps). It is not really a problem as those closes down when I Alt-F4 the movie, but it is still undesirable. I guess I'm most annoyed with having to type that extra stuff, so if you come up with an alias or function, that would be OK, to. Although, it wouldn't hurt me to learn what's going on. Edit: Hm, it doesn't even seem to work the way I said. The "work"around is not reliable. Forget about it.

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  • Synergy Key Mapping

    - by Tauren
    I'm running a Synergy server on Ubuntu and a Synergy+ client on OSX. The server has a standard windows keyboard with shift, ctrl, windows, and alt keys. My MacBookPro has shift, fn, control, alt/option, and command keys. When I press ctrl-c, ctrl-v, etc, the appropriate copy/paste action doesn't happen on the Mac, but it does in Ubuntu. If I'm controlling the mac, and press alt-c, alt-v, then I get the copy/paste action. So I played around with key mapping in synergy.conf and found that the following allows me to do copy/paste with ctrl-c/ctrl-v: section: screens godzilla: mbp.local: ctrl = alt alt = ctrl end Is this all that I need to do? Or are there other mappings that will help as well? The synergy configuration page refers to the following key mappings. What are the equivalent keys for each of these on the Windows keyboard and Mac keyboard? What is a meta or super key? shift = {shift|ctrl|alt|meta|super|none} ctrl = {shift|ctrl|alt|meta|super|none} alt = {shift|ctrl|alt|meta|super|none} meta = {shift|ctrl|alt|meta|super|none} super = {shift|ctrl|alt|meta|super|none} Thanks!

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  • How do I start nginx on port 80 at OS X login?

    - by Bryson
    I installed Nginx using homebrew and after completing the installation the following message was displayed: In the interest of allowing you to run `nginx` without `sudo`, the default port is set to localhost:8080. If you want to host pages on your local machine to the public, you should change that to localhost:80, and run `sudo nginx`. You'll need to turn off any other web servers running port 80, of course. You can start nginx automatically on login running as your user with: mkdir -p ~/Library/LaunchAgents cp #{prefix}/org.nginx.nginx.plist ~/Library/LaunchAgents/ launchctl load -w ~/Library/LaunchAgents/org.nginx.nginx.plist Though note that if running as your user, the launch agent will fail if you try to use a port below 1024 (such as http's default of 80.) But I want Nginx, on port 80, running at login and I don't want to have to open terminal and type in sudo nginx to do it. I want it to load from a plist file like Redis and PostgreSQL do. I moved the plist to /Library/LaunchAgents/ from the user folder equivalent and changed its ownership, also tried setting the user directive in the nginx.conf file and still the same error message in Console.app: nginx: [emerg] bind() to 0.0.0.0:80 failed (13: Permission denied) (along with another message telling me that since nginx was being run without super-user privileges, the user directive was being ignored)

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  • Problems configuring an SSH tunnel to a Nexentastor appliance for use with headless Crashplan

    - by Rob Smallshire
    Problem I am attempting to configure an SSH tunnel to a NexentaStor appliance from either a Windows or Linux computer so that I can connect a Crashplan Desktop GUI to a headless Crashplan server running on the Nexenta box, according to these instructions on the Crashplan support site: Connect to a Headless CrashPlan Desktop. So far, I've failed to get a working SSH tunnel from from either either a Windows client (using Putty) or a Linux client (using command line SSH). I'm fairly sure the problem is at the receiving end with NexentaStor. A blog article - CrashPlan for Backup on Nexenta - indicates that it could be made to work only after "after enabling TCP forwarding in Nexenta in /etc/ssh/sshd_config" - although I'm not sure how to go about that or specifically what I need to do. Things I have tried Ensuring the Crashplan server on the Nexenta box is listening on port 4243 $ netstat -na | grep LISTEN | grep 42 127.0.0.1.4243 *.* 0 0 131072 0 LISTEN *.4242 *.* 0 0 65928 0 LISTEN Establishing a tunnel from a Linux host: $ ssh -L 4200:localhost:4243 admin:10.0.0.56 and then, from another terminal on the Linux host, using telnet to verify the tunnel: $ telnet localhost 4200 Trying ::1... Connected to localhost. Escape character is #^]'. with nothing more, although the Crashplan server should respond with something. From Windows, using PuTTY have followed the instructions on the Crashplan support site to establish an equivalent tunnel, but then telnet on Windows gives me no response at all and the Crashplan GUI can't connect either. The PuTTY log for the tunnelled connection shows reasonable output: ... 2011-11-18 21:09:57 Opened channel for session 2011-11-18 21:09:57 Local port 4200 forwarding to localhost:4243 2011-11-18 21:09:57 Allocated pty (ospeed 38400bps, ispeed 38400bps) 2011-11-18 21:09:57 Started a shell/command 2011-11-18 21:10:09 Opening forwarded connection to localhost:4243 but the telnet localhost 4200 command from Windows does nothing at all - it just waits with a blank terminal. On the NexentaStor server I've examined the /etc/ssh/sshd_config file and everything seems 'normal' - and I've commented out the ListenAddress entries to ensure that I'm listening on all interfaces. How can I establish a tunnel, and how can I verify that it is working?

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  • Spreadsheet RDBMS

    - by John Nilsson
    I'm looking for a software (or set of software) that will let me combine spreadsheet and database workflows. Data entry in spreadsheet to enable simple entry from clipboard, analysis based on joins, unions and aggregates and pivot/data pilot summaries. So far I've only found either spreadsheets OR db applications but no good combination. OO base with calc for tables doesn't support aggregates f.ex. Google Spreadsheet + Visualizaion API doesn't support unions or joins, zoho db doesn't let me paste from clipboard. Any hints on software that could be used? Basically I'm trying to do some analysis of my personal bank transactions. Problem 1, ETL. The data has to be moved from my bank to a database. My current solution is to manually copy and paste the data into one spread sheet per account from my internet bank. Pains: Not very scriptable. Lots of scrolling to reach the point to paste. Have to apply sorting and formatting to the pasted data each time. Problem 2, analysis. I then want to aggregate the different accounts in one sweep to track transfers per type of transfer over all accounts. The actual aggregation is still unsolved because I can't find a UNION equivalent in the spreadsheets I've tried.

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  • Is it possible to play multiple audio streams from one "jukebox" to multiple Airport Express devices?

    - by Alex Reynolds
    I have set up a Mac mini as a jukebox that streams audio to an Airport Express in another room in the house, using the AirPlay/AirTunes feature in iTunes. I control this with the iOS Remote app, and this works great. At the present time, it looks like the Mac mini's copy of iTunes gets taken over by the Remote app, while streaming. If I set up a second Airport Express in room B, is there a way to set it up (as well as the jukebox) so that it can receive and play its own unique music stream ("stream B"), separate from what's going on at the Mac mini, or in room A, which is playing stream A? To accomplish this, I would be happy to buy a copy of Rogue Amoeba's AirFoil if it will allow sending multiple, separate audio streams from one computer to the multiple wireless bridges, while using the Remote app (or a Rogue Amoeba equivalent for iOS). However, it is unclear to me from their site documentation, whether that is possible or not. I'd prefer to give the points to an answer that solves this problem. If you don't know if it can be done, or do not think it can be done, please allow others to answer. I appreciate your help. Thanks for your advice.

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  • What's the right way to start a node.js service?

    - by elliot42
    I'm running a node.js service (statsd) on CentOS 6. What's the proper way to daemonize and start such a service? Potential Daemonizers--are daemonizers supposed to be language-specific or general?: forever (node-specific) daemonize nohup (presumably wrong) start-stop-daemon(debian-only? is this for daemonizing or starting/stopping? what is the Centos equivalent?) Should the app itself really know how to daemonize itself and then have a -d flag? (e.g. via node-daemonize2 or forever-monitor?) Service starters--should these be from the system/distro, or should they be from monitoring tools such as monit?: service? is really /etc/init.d on CentOS? service? is really Upstart on Ubuntu? monit? daemontools? runit? I'm unfortunately new to this--where can I read up on what is the most standard, classic, reliable way of doing this?

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  • Ubuntu NBR karmic boot freezes at fsck from util-linux-ng 2.16

    - by BlueBill
    Hi all, I have a netbook (emachine e250 - equivalent to an acer aspire one) and I have Ubunutu NBR 9.10 installed on it. Every other cold boot freezes at the following error message: "fsck from util-linux-ng 2.16" There is no disk activity, no activity what so ever. I have left the machine sit for over an hour and nothing. It takes a couple of hard resets to be able to boot properly. Once it boots everything works great (wireless, suspend/resume, etc.)! I have spent the last couple of weeks researching the problem and the only thing that seems to work is setting nolapic in the boot string in grub - it boots every time. Unfortunately, nolapic disables the second core and causes problems with suspend resume. At first I thought it was an fsck problem with the first partition on the hard disk as it is a hidden ntfs partition containing the windows xp recover information. So in /etc/fstab I set the partition so that it would be ignored by fsck. This didn't seem to do anything. I have these partitions: /dev/sda1 - an ntfs recovery partition /dev/sda2 - /boot /dev/sda3 - swap /dev/sda5 - / /dev/sda6 - /home I am running kernel version 2.6.31-19-generic and have all the patches (as indicated by update manager). I also have no splash screen so I can see the boot progress. I have only been using NBR since January, I have been using Ubuntu on my desktop since last June (2009-06). What logs should I be looking at? Is there a log for failed boots? Thanks, Troy

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  • Cisco ASA: Routing packets based on where the connections started from

    - by DrStalker
    We have a Cisco ASA 5505 (version 8.2(2)) with three interfaces: outside: IP address 11.11.11.11, this is the default route inside: IP address 10.1.1.1, this is the local subnet newlink: 22.22.22.22, this is a new internet connection. We need to move VPN users from the 11.11.11.11 address to the 22.22.22.22 address, and we're using SSH on the ASA as to test and sort out the routing. The problem we have is this: If we define a particular IP as being on a static route out the newlink interface then it can SSH to 22.22.22.22 fine. If we do not define a static route then the traffic hits the ASA, but the return traffic does not come back over newlink; presumably it gets sent over the outside interfcae as that is the default route. We can't define a static route for each remote endpoint because there are dialup VPN users, who obviously change IP a lot What we need to do is configure the ASA so if a connection comes in on the newlink interface then the outgoing packets for that go over the newlink interface, not the default route. With iptables this should be do-able by marking the connection and doing mark-routing, but what is the equivalent for a Cisco ASA?

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  • Solaris TCP stack tuning

    - by disserman
    We have a large web project (about 2-3k requests per second), using haproxy (http://haproxy.1wt.eu/) as a frontend and load balancer between the java application servers. The frontend (haproxy) is running on Linux but we are going to migrate it to the Solaris 10 as all our other servers are running under Solaris. After switching a traffic I see the two things: a) the web site became loading slower (5-10 seconds with images in comparison to 2-3 seconds on Linux) b) sometimes haproxy fails to perform a "lifecheck" (get a special web page and analyze http response code) due to the socket timeout. After switching traffic back to Linux everything is okay. I've tried to tune all params I found in /dev/tcp but no progress. I believe the problem is in some open socket limitations. If someone can point me to the answer, I would be greatly appreciated. p.s. haproxy is running under Xen DomU on Linux (Kernel 2.6.18, Debian 5), under zone on Solaris (10 u8). the only thing we did on Linux is increasing of ip_conntrack_max (I believe Solaris option tcp_conn_req_max_q is the equivalent).

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  • Can't find standalone Chrome Gmail client that I know exists

    - by Carson
    I'm on Windows. A couple years ago when I switched from Outlook to Gmail (Google Apps), Google provided this awesome little standalone gmail client that was just a single-purpose Chrome install. It launched like a normal application, stayed updated when I updated Chrome. It was Chrome in a separate application that launched only gmail, stayed logged in really well, and "felt" like a gmail mail client, with the gmail interface. It had it's own little red envelope icon, it was a windows app. (I remember there was no Mac equivalent.) I found it while looking through the "this is how you get your company to switch to gmail" documentation that Google provided. I just repaved my box and now I'm looking for this thing again, and I had no idea it would be impossible to find. I've spent literally 2 hours looking, searching, googling, etc. I'm losing my mind. Anyone know how I can get my hands on this? I used it all day every day for 2 years, so I know it exists :), but I can not find it. Any assistance would be gratefully received.

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  • Setup site folders on Apache and PHP

    - by Cobus Kruger
    I'm trying to set up my first Apache server on my Windows PC at home and I have real trouble finding out which configuration settings go where. I downloaded and installed XAMPP which seemed to get everything nicely set up and can see a working website on http://localhost. So far so good. The point of this is to develop a website of course, and to make my life easier (irony?), I wanted to let the web site root point to my Eclipse project folder. So I opened httpd-vhosts.conf, uncommented a VirtualHost block and changed its DocumentRoot to my local path. Now when I try to load http://localhost I get a 403 (Access denied) error. So where do I configure permissions for my folder? And is that all I need to let my site run from the folder specified or am I going to have to clear another hurdle? Update: I tried to simplify things a little, so I reinstalled XAMPP and got back to a working http://localhost. Then I confirmed that httpd-vhosts.conf is included in httpd.conf and made the following changes to httpd-vhosts.conf: Uncommented the line NameVirtualHost *:80 Added a virtual host shown below. Restarted Apache and saw the expected page on http://localhost <VirtualHost *:80> DocumentRoot "C:/xampp/htdocs/" ServerName localhost ErrorLog "logs/dummy-host2.localhost-error.log" CustomLog "logs/dummy-host2.localhost-access.log" combined </VirtualHost> I then created a new folder named C:\testweb, added an index.html file and changed the DocumentRoot line shown above. For all intents and purposes I would then expect the two configurations to be equivalent. But this setup gives me an error 403. Even though the C:\testweb folder already had the same permissions as the C:\xampp\htdocs folder, I then went further and gave the Everyone group full control of C:\testweb and got exactly the same problem. So what did I miss?

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  • email dropbox between two mutually untrusted sites

    - by user52874
    I've an interesting problem that I thought was straightforward, but turns out I think I'm whistling down the wrong path. It has to do with (shudder) email. I thought I was done with needing to know about email guts ten years ago; I was wrong. Anyway. Simply put, I need to figure out how to relay outgoing email that is not targetted in our domain from our domain into a 'dropbox' in a DMZ, and the Other Guys can retrieve that email from their side of the DMZ and distribute it accordingly, even out to the public internet if need be. There will be no [un-established] traffic coming back to Our side from anywhere; any attempts to do so are dropped with malicious prejudice. Our side is postfix running on scilinux6.1. The DMZ boxes are redhat5.4. The Other Guys are M$ Exchange. The firewalls are set up such that data can go from Our Side downsec to the DMZ, but not upsec from the DMZ into Our Side. Same for the Other Guys. My first thinking was simply to set up postfix on a box in the DMZ and tell them to set up fetchmail or whatever the M$ equivalent is, but then I started remembering that postfix wants to actively relay email onwards, rather than hold it and wait for someone to 'reach in' and retrieve it. I'm not sure I've explained this well, but hopefully it's clear enough that someone can point me in the right direction. I seem to remember having done this before, but it was a looong time ago. thanks!

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  • copSSH and cygwin - Can't use windows style paths

    - by DrFredEdison
    I setup copSSH on one of my windows servers, and within the copSSH bash shell, I can't seem to use windows-style paths to remove and copy files. If I do try, I get the following: $ /bin/cp -r C:/Domains/_temp/collage_push/* C:/Domains/collage/ cygwin warning: MS-DOS style path detected: C:/Domains/_temp/collage_push/ Preferred POSIX equivalent is: /cygdrive/c/Domains/_temp/collage_push/ CYGWIN environment variable option "nodosfilewarning" turns off this warning. Consult the user's guide for more details about POSIX paths: http://cygwin.com/cygwin-ug-net/using.html#using-pathnames I have created a windows environment variable CYGWIN set to nodosfilewarning. It has no effect. I added export CYGWIN=nodosfilewarning to my .bashrc and doing a echo $CYGWIN in my ssh session confirms it is indeed getting set; yet again, it has no effect finally, I noted that when not doing my own export that CYGWIN contains "nontsec binmode" (no quotes), so I tried: export CYGWIN="nodosfilewarning nontsec binmode" in my .bashrc and still no dice. Older versions of CopSSH didn't have this issue. How can I actually override this error? I have a lot of scripts that already use windows-style paths, and I'd rather not change them if possible.

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