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• What are the specifications on the RAM inside my computer?

  - by Faken

  I have a Dell Dimension 9200 that I bought 4 years ago. I want to find out the exact specifications (manufacturer, speed, timings, etc.). Is there a way to get this specific info without having to open up the PC (it's buried in and under a bunch of furniture, I'd perfer not to have to dig it out). All I know about it right now is that it is 4 1GB sticks of DDR2 RAM at 667 Mhz. It is the standard RAM that shipped with the computer 4 years ago (from Dell). Does anyone know what the specifications are of the RAM that Dell used in this particular model of computer 4 years ago? Note: I've done my research before coming here. CPU-Z, EVEREST, and AIDA32 all have been unable to give me any more information other than 4 x 1GB @ 667Mhz. I can't find any specifications in the Dell online manuals either (at least not as specific as I want). Thanks -Faken

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• How to get the Exact Collision Point and ignore the collision (from 2 "ghost bodies")

  - by Moritz

  I have a very basic problem with Box2D. For a arenatype game where you can throw scriptable "missiles" at other players I decided to use Box2D for the collision detection between the players and the missiles. Players and missiles have their own circular shape with a specific size (varying). But I don´t want to use dynamic bodies because the missiles need to move themselve in any way they want to (defined in the script) and shouldnt be resolved unless the script wants it. The behavior I look for is as following (for each time step): velocity of missiles is set by the specific missile script each missile is moved according to that velocity if a collision accurs now, I want to get the exact position of impact, and now I need a mechanism to decide if the missile should just ignore the collision (for example collision between two fireballs which shouldnt interact) or take it (so they are resolved and dont overlap anymore) So is there a way in Box2D to create Ghost bodies and listen to collisions from them, then deciding if they should ignore the collision or should take them and resolve their position? I hope I was clear enough and would be happy about any help!

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• MAC to IP binding in ASA 5510 / SG 300-52

  - by Sampsa

  I am trying to configure a Cisco ASA 5510 to assign specific IP-addresses to specific MACs. Firmware on my ASA is 8.2(5). I have used this feature in our previous device (Cisco SA-520W). I have also read that this feature is (not yet) implemented. How do I work around this problem, if not by direct assignment? Do I need to specify fixed IP's on concerned devices themselves? I also have a SG 300-52 switch for our LAN. We cannot specify IP-addresses to ports, because we have further switches down the line. Thank you for your help!

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• Identity Globe Trotters (Sep Edition): The Social Customer

  - by Tanu Sood

  Welcome to the inaugural edition of our monthly series - Identity Globe Trotters. Starting today, the last Friday of every month, we will explore regional commentary on Identity Management. We will invite guest contributors from around the world to share their opinions and experiences around Identity Management and highlight regional nuances, specific drivers, solutions and more. Today's feature is contributed by Michael Krebs, Head of Business Development at esentri consulting GmbH, a (SOA) specialized Oracle Gold Partner based in Ettlingen, Germany. In his current role, Krebs is dealing with the latest developments in Enterprise Social Networking and the Integration of Social Media within business processes.  By Michael Krebs The relevance of "easy sign-on" in the age of the "Social Customer" With the growth of Social Networks, the time people spend within those closed "eco-systems" is growing year by year. With social networks looking to integrate search engines, like Facebook announced some weeks ago, their relevance will continue to grow in contrast to the more conventional search engines. This is one of the reasons why social network accounts of the users are getting more and more like a virtual fingerprint. With the growing relevance of social networks the importance of a simple way for customers to get in touch with say, customer care or contract departments, will be crucial for sales processes in critical markets. Customers want to have one single point of contact and also an easy "login-method" with no dedicated usernames, passwords or proprietary accounts. The golden rule in the future social media driven markets will be: The lower the complexity of the initial contact, the better a company can profit from social networks. If you, for example, can generate a smart way of how an existing customer can use self-service portals, the cost in providing phone support can be lowered significantly. Recruiting and Hiring of "Digital Natives" Another particular example is "social" recruiting processes. The so called "digital natives" don´t want to type in their profile facts and CV´s in proprietary systems. Why not use the actual LinkedIn profile? In German speaking region, the market in the area of professional social networks is dominated by XING, the equivalent to LinkedIn. A few weeks back, this network also opened up their interfaces for integrating social sign-ons or the usage of profile data for recruiting-purposes. In the European (and especially the German) employment market, where the number of young candidates is shrinking because of the low birth rate in the region, it will become essential to use social-media supported hiring processes to find and on-board the rare talents. In fact, you will see traditional recruiting websites integrated with social hiring to attract the best talents in the market, where the pool of potential candidates has decreased dramatically over the years. Identity Management as a key factor in the Customer Experience process To create the biggest value for customers and also future employees, companies need to connect their HCM or CRM-systems with powerful Identity management solutions. With the highly efficient Oracle (social & mobile enabling) Identity Management solution, enterprises can combine easy sign on with secure connections to the backend infrastructure. This combination enables a "one-stop" service with personalized content for customers and talents. In addition, companies can collect valuable data for the enrichment of their CRM-data. The goal is to enrich the so called "Customer Experience" via all available customer channels and contact points. Those systems have already gained importance in the B2C-markets and will gradually spread out to B2B-channels in the near future. Conclusion: Central and "Social" Identity management is key to Customer Experience Management and Talent Management For a seamless delivery of "Customer Experience Management" and a modern way of recruiting the best talent, companies need to integrate Social Sign-on capabilities with modern CX - and Talent management infrastructure. This lowers the barrier for existing and future customers or employees to get in touch with sales, support or human resources. Identity management is the technology enabler and backbone for a modern Customer Experience Infrastructure. Oracle Identity management solutions provide the opportunity to secure Social Applications and connect them with modern CX-solutions. At the end, companies benefit from "best of breed" processes and solutions for enriching customer experience without compromising security. About esentri: esentri is a provider of enterprise social networking and brings the benefits of social network communication into business environments. As one key strength, esentri uses Oracle Identity Management solutions for delivering Social and Mobile access for Oracle’s CRM- and HCM-solutions. …..End Guest Post…. With new and enhanced features optimized to secure the new digital experience, the recently announced Oracle Identity Management 11g Release 2 enables organizations to securely embrace cloud, mobile and social infrastructures and reach new user communities to help further expand and develop their businesses. Additional Resources: Oracle Identity Management 11gR2 release Oracle Identity Management website Datasheet: Mobile and Social Access (pdf) IDM at OOW: Focus on Identity Management Facebook: OracleIDM Twitter: OracleIDM We look forward to your feedback on this post and welcome your suggestions for topics to cover in Identity Globe Trotters. Last Friday, every month!

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• busybox does not display the throughput value at the end of a FTP session?

  - by rockyurock

  Hello, why busybox does not display the throughput value at the end of a FTP session? Or it is some version specific ? i heard that some version of busybox displays Tput value at the end of data transfer but i know that specific version .. i typed the below command but i did not get any throughput status.. "busybox ftpget -v -u user -p Password ip abc.txt abc.txt" could anybody please let me know how can i get the tput value for UL/DL data transfer? Also how can we get the status of Tput value at the client side if we do busybox ftpput operation?? regds rocky

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• Python response parse [migrated]

  - by Pavel Shevelyov

  When I'm sending some data on host: r = urllib2.Request(url, data = data, headers = headers) page = urllib2.urlopen(r) print page.read() I have something like this: [{"command":"settings","settings":{"basePath":"\/","ajaxPageState":{"theme":"spsr","theme_token":"kRHUhchUVpxAMYL8Y8IoyYIcX0cPrUstziAi8gSmMYk","css":[]},"ajax":{"edit-submit":{"callback":"spsr_calculator_form_ajax","wrapper":"calculator_form","method":"replaceWith","event":"mousedown","keypress":true,"url":"\/ru\/system\/ajax","submit":{"_triggering_element_name":"submit"}}}},"merge":true},{"command":"insert","method":null,"selector":null,"data":"\u003cdiv id=\"calculator_form\"\u003e\u003cform action=\"\/ru\/service\/calculator\" method=\"post\" id=\"spsr-calculator-form\" accept-charset=\"UTF-8\"\u003e\u003cdiv\u003e\u003cinput id=\"edit-from-ship-region-id\" type=\"hidden\" name=\"from_ship_region_id\" value=\"\" \/\u003e\n\u003cinput type=\"hidden\" name=\"form_build_id\" value=\"form-0RK_WFli4b2kUDTxpoqsGPp14B_0yf6Fz9x7UK-T3w8\" \/\u003e\n\u003cinput type=\"hidden\" name=\"form_id\" value=\"spsr_calculator_form\" \/\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bg_p\"\u003e \n\u0421\u0435\u0439\u0447\u0430\u0441 \u0412\u044b... bla bla bla but I want have something, like this: <html><h1>bla bla bla</h1></html> How can I do it?

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• Easy way to access cookies in Chrome

  - by macek

  To view specific cookies in Chrome, currently I have to: Go to preferences Click Under the Hood tab Click Content Settings... button Click Cookies tab (if it's not already active) Click Show cookies and other site data... button If I want to narrow this down to a specific domain, I have to type it in, too. Compare this to Firefox: View Page Info Click Security tab Click View Cookies The domain for the page I'm currently on is already used as a filter, too. My question: Is there an easier way in Chrome? I've done some searching for an extension but have come up with nothing.

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• VBA + Polymorphism: Override worksheet functions from 3rd party

  - by phi

  my company makes extensive use of a data provider using a (closed source) VBA plugin. In principal, every query follows follows a certain structure: Fill one cell with a formula, where arguments to the formula specify the query the range of that formula is extended (not an arrray formula!) and cells below/right are filled with data For this to work, however, a user has to have a terminal program installed on the machine, as well as a com-plugin referenced in VBA/Excel. My Problem These Excelsheets are used and extended by multiple users, and not all of them have access to the data provider. While they can open the sheet, it will recalculate and the data will be gone. However, frequent recalculation is required. I would like every user to be able to use the sheets, without executing a very specific set of formulas. Attempts remove the reference on those computers where I do not have terminal access. This generates a NAME error i the cell containing the query (acceptable), but this query overrides parts of the data (not acceptable) If you allow the program to refresh, all data will be gone after a failed query Replace all formulas with the plain-text result in the respective cells (press a button and loop over every cell...). Obviously destroys any refresh-capabilities the querys offer for all subsequent users, so pretty bad, too. A theoretical idea, and I'm not sure how to implement it: Replace the functions offered by the plugin with something that will be called either first (and relay the query through to the original function, if thats available) or instead of the original function (by only deploying the solution on non-terminal machines), which just returns the original value. More specifically, if my query function is used like this: =GETALLDATA(Startdate, Enddate, Stockticker, etc) I would like to transparently swap the function behind the call. Do you see any hope, or am I lost? I appreciate your help. PS: Of course I'm talking about Bloomberg... Some additional points to clarify issues raise by Frank: The formula in the sheets may not be changed. This is mission-critical software, and its way too complex for any sane person to try and touch it. Only excel and VBA may be used (which is the reason for the previous point...) It would be sufficient to prevent execution of these few specific formulas/functions on a specific machine for all excel sheets to come This looks more and more like a problem for stackoverflow ;-)

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• Help with Apache rewriteengine rules

  - by Vinay

  Hello - I am trying to write a simple rewrite rule using the rewriteengine in apache. I want to redirect all traffic destined to a website unless the traffic originates from a specific IP address and the URI contains two specific strings. RewriteEngine On RewriteLog /var/log/apache2/rewrite_kudithipudi.log RewriteLogLevel 1 RewriteCond %{REMOTE_ADDR} ^199\.27\.130\.105 RewriteCond %{REQUEST_URI} !/StringOne [NC, OR] RewriteCond %{REQUEST_URI} !/StringTwo [NC] RewriteRule ^/(.*) http://www.google.com [R=302,L] I put these statements in my virtual host configuration. But the rewriteengine seems to be redirect all requests, whether they match the condition or not. Am I missing something? Thank you. Vinay.

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• Subdomain still times out after set up a month ago

  - by user8137

  I'm a newbie on this and this has probably been asked already but the subjects online were close but too vague in there answers so I've probably really messed this up. I would really appreciate specific step by step instructions. This is what I'd like to do: use the subdomain www.high-res.domain.com to be accessed by external customers with specific permissions to access the site (like ftp). We use Network Solutions to house domain.com. We recently added a new ip address to point to www.high-res.domain.com. I gave the ip address to the company that hosts our website. I pinged www.high-res.domain.com and it points to the correct ip address but still times out. It’s been a few weeks now and when you ping it, it still times out. C:ping XXX.XXX.X.XXX Pinging XXX.XXX.X.XXX with 32 bytes of data: Request timed out. Request timed out. Request timed out. Request timed out. Ping statistics for XXX.XXX.X.XXX: Packets: Sent = 4, Received = 0, Lost = 4 (100% loss). Tracert times out as well. I even went to DNS tools and a few other sites for checking this and it shows the same thing. I recently went into the DNSmgmt on our server (wink2k3sp1) and created an A record under the DomainDnsZones which translated to a Cname when you look at it. Under the Domain it has two entries one to the subdomain and the other to the website host each with separate ip addresses. Is this correct? The website people are too busy on another project to research it further and my friends haven't gotten back to me. Please help. Thanks KK

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• IIS httpTracing setting has no effect

  - by digahill

  I'm trying to troubleshoot some performance issues we are having on a specific ASP.NET page with Microsoft's Perfecto Tool on IIS 7.5. Perfecto uses the ETW hooks build in to IIS to report on specific HTTP request, and is working quite well. However, I only want IIS to emit traces for one specific page, say "Default.aspx" in my TestApp Web Application. Following the instructions on the httpTracing man page, I should be able to add the traceUrls element to my root web.config file for TestApp. This doesn't seem to affect tracing whatsoever when I do so. For example, I've used the following settings in the web.config file and every request that hits the IIS server is sending tracing messages that are in turn picked up by Perfecto. (In the System.WebServer section) <httpTracing> <traceUrls> <add value="/Default.aspx" /> </traceUrls> </httpTracing> I then found that the applicationHost.config file on the server had an empty element. I tried removing this element, as well as the httpTracing element in the web.config. After a machine reboot, I was still getting tracing messages! My understanding is that the presense of the httpTracing element is what controlls whether ETW tracing is on or not. I ensured there was no reference to httpTracing in the machine.config, too. At a loss, I decided to remove the IIS Tracing feature with Server Manager. After a reboot, I no longer got ETW tracing. I then reinstalled IIS Tracing feature with Server Manager. As expected, the httpTracing element reappeared in the applicationhost.config file. Tracing messages began sending again for all sites and pages. I then tried to use the traceUrls element at the applicationhost.config level. This also didn't filter out and traces. I must be misunderstanting something key with how httpTracing works. There aren't many resources on the web to help me, either. Can anyone tell me if what I'm trying should work? Has anyone else had success filtering tracing message per page with traceUrls? I should note that I also tried changing with the following setting in applicationhost.config to "allow". It didn't seem to help. <section name="httpTracing" overrideModeDefault="Allow" />

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• Html Buttons with Triangles [migrated]

  - by Dmitry

  I'm looking for the simplest way of creating 'buttons' with bootom-central triangles as follows: |--------| | Text | |---\/---| By buttons/menu items I mean something which will will support atomic mouse behavior for the whole shape's region. No rounded corners just the shape itself. I saw plenty of websites doing thsese buttons lately, but now for some strange reason I couldn't find any. Ideally I'm looking for tutorial links or some general guidances, as the topic might be too big to be covered by one post. Technology scope wise - ideally I'm looking for Html5/Css3 solution. I don't care mouch about old IE support and I think Html5/css3 will give a slicker/more elegant solution. On the way forward I might need to add drop shadows, which is another argument in favour of css3. Thanks.

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• Advice on new hardware firewall for a small company server-environment

  - by Mestika

  Hi everyone, My companies currently hardware firewall (an old ZyXEL ZyWALL firewall) and is indeed requiring an update to a new firewall. It is a small company with a similar small server-environment, so the need for a huge, complex and expensive solution isn’t there but a more “straight-forward” firewall, that can provide the necessary security to our systems and block unwanted elements from the core server and only accept access through our one server which is used as an “gateway” between the Internet and our internal network. I haven’t that much experience with hardware firewalls so I’m requesting any good advice and/or knowledge on which products will be suited for our specific need. If you need more information about the specific needs we require, please let me know and I’ll provide them to you. Sincerely - Mestika

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• Software licensing template that gives room for restricting usage to certain industries/uses of software/source

  - by BSara

  *Why this question is not a duplicate of the questions specified as such: I did not ask if there was a license that restricted specific uses and I did not ask if I could rewrite every line of any open source project. I asked very specifically: "Does there exist X? If not, can I Y with Z?". As far as I can tell, the two questions that were specified as duplicates do not answer my specific question. Please remove the duplicate status placed on the question. I'm developing some software that I would like to be "semi" open source. I would like to allow for anyone to use my software/source unless they are using the software/source for certain purposes. For example, I don't want to allow usage of the software/source if it is being used to create, distribute, view or otherwise support pornography, illegal purposes, etc. I'm no lawyer and couldn't ever hope to write a license myself nor do I have to time to figure how to best do this. My question is this: Does there exist a freely available license or a template for a license that I can use to license my software under they conditions explained above just like one can use the Creative Commons licenses? If not, am I allowed to just alter one of Creative Commons licenses to meet my needs?

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• How to ignore query parameters in web cache?

  - by eduardocereto

  Google Analytics use some query parameters to identify campaigns and to do cookie control. This is all handled by javascript code. Take a look at the following example: http://www.example.com/?utm_source=newsletter&utm_medium=email&utm_ter m=October%2B2008&utm_campaign=promotion This will set cookies via JavaScript with the right campaign origin. This query parameters can have multiple and sometimes random values. Since they are used as cache hash keys the cache performance is heavily degraded in some scenarios. I suppose there's a not so hard configuration on cache servers to just ignore all query parameters or specific query parameters. Am I right? Does anyone know how hard is it in popular web cache solutions, to create ? I'm not interested in a specific web cache solution. It would be great to hear about the one you use.

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• Auf Erfolg spezialisiert

  - by A&C Redaktion

  Spezialisierung kommt an. So lautet kurz gefasst die Bilanz, die Oracle Alliances & Channel jetzt, nach gut einem Jahr Laufzeit des OPN Spezialisierungsprogramms, gezogen hat. Das Wichtigste auf einen Blick: über 400 Unternehmen in 65 Ländern in Europa, Afrika und dem Nahen Osten sind bereits spezialisierte Oracle Partner270 davon haben das Platin-Level erreichtinsgesamt erfolgten über 560 Spezialisierungensomit sind 14.400 spezialisierte Fachkräfte im OPN Netzwerk tätig und das in 65 Ländern der EMEA-Region Als Grund dafür dass die Sepzialisierungsangebote so gut ankommen, nennt Stein Surlien, dass sich Partner "besser vom Wettbewerb abheben und für ihr spezifisches Fachwissen anerkannt" werden. Weitere Fakten, Stimmen und Einschützungen finden Sie in der aktuellen Pressemitteilung.

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• Google suddenly only indexes https and not http

  - by spender

  So all of a sudden, searches for our site "radiotuna" give out the result as an HTTPS link. https://www.google.com/?q=radiotuna#hl=en&safe=off&output=search&sclient=psy-ab&q=radiotuna&oq=radiotuna&gs_l=hp.12...0.0.0.3499.0.0.0.0.0.0.0.0..0.0.les%3B..0.0...1c.LnOvBvgDOBk&pbx=1&bav=on.2,or.r_gc.r_pw.r_qf.&fp=177c7ff705652ec3&biw=1366&bih=602 We only use https for the download of two specific files (these urls are resources used for autoupdate functionality of an app we distribute). All other parts of the site should be served over http. We wouldn't like to see any other traffic over https, nor any of our site links to appear in search engines as https. I'd like to address this issue. It seems that the following solutions are available: hand out an https specific robots.txt as such: User-agent: * Disallow: / and/or at app-level, 301 permanent redirect all requests (except the two above) to HTTP if they come in as HTTPS. My concern with the robots method is that, say (for some reason) google decided not to index http pages, disallowing https pages might mean that google has nothing left to index with disastrous consequences for our ranking. This means I'm inclined to go with a 301 redirect. Any thoughts?

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• Spotlight on GlassFish 4.1: #7 WebSocket Session Throttling and JMX Monitoring

  - by delabassee

  'Spotlight on GlassFish 4.1' is a series of posts that highlights specific enhancements of the upcoming GlassFish 4.1 release. It could be a new feature, a fix, a behavior change, a tip, etc. #7 WebSocket Session Throttling and JMX Monitoring GlassFish 4.1 embeds Tyrus 1.8.1 which is compliant with the Maintenance Release of JSR 356 ("WebSocket API 1.1"). This release also brings brings additional features to the WebSocket support in GlassFish. JMX Monitoring: Tyrus now exposes WebSocket metrics through JMX . In GF 4.1, the following message statistics are monitored for both sent and received messages: messages count messages count per second average message size smallest message size largest message size Those statistics are collected independently of the message type (global count) and per specific message type (text, binary and control message). In GF 4.1, Tyrus also monitors, and exposes through JMX, errors at the application and endpoint level. For more information, please check Tyrus JMX Monitoring Session Throttling To preserve resources on the server hosting websocket endpoints, Tyrus now offers ways to limit the number of open sessions. Those limits can be configured at different level: per whole application per endpoint per remote endpoint address (client IP address)   For more details, check Tyrus Session Throttling. The next entry will focus on Tyrus new clients-side features.

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• Web Services and code lists

  - by 0x0me

  Our team heavily discuss the issues how to handle code list in a web service definition. The design goal is to describe a provider API to query a system using various values. Some of them are catalogs resp. code lists. A catalog or code list is a set of key value pairs. There are different systems (at least 3) maintaining possibly different code lists. Each system should implement the provider API, whereas each system might have different code list for the same business entity eg. think of colors. One system know [(1,'red'),(2,'green')] and another one knows [(1,'lightgreen'),(2,'darkgreen'),(3,'red')] etc. The access to the different provider API implementations will be encapsulated by a query service, but there is already one candidate which might use at least one provider API directly. The current options to design the API discussed are: use an abstract code list in the interface definition: the web service interface defines a well known set of code list which are expected to be used for querying and returning data. Each API provider implementation has to mapped the request and response values from those abstract codelist to the system specific one. let the query component handle the code list: the encapsulating query service knows the code list set of each provider API implementation and takes care of mapping the input and output to the system specific code lists of the queried system. do not use code lists in the query definition at all: Just query code lists by a plain string and let the provider API implementation figure out the right value. This might lead to a loose of information and possibly many false positives, due to the fact that the input string could not be canonical mapped to a code list value (eg. green - lightgreen or green - darkgreen or both) What are your experiences resp. solutions to such a problem? Could you give any recommendation?

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• NAT rules betweek 2 network interfaces (with iptables)

  - by Simone Falcini

  this is the current network that I have: UBUNTU: eth0: ip: 212.83.10.10 bcast: 212.83.10.10 netmask 255.255.255.255 gateway 62.x.x.x eth1: ip: 192.168.1.1 bcast: 192.168.1.255 netmask: 255.255.255.0 gateway ? CENTOS: eth0: ip: 192.168.1.2 bcast: 192.168.1.255 netmask 255.255.255.0 gateway 192.168.1.1 I basically want this: Make specific NAT rules from the internet to specific internal servers depending on the port: Connections incoming to port 80 must be redirected to 192.168.1.2:80 Connections incoming to port 3306 must be redirected to 192.168.1.3:3306 and so on... I also need one NAT rule to allow the servers in the subnet 192.168.1.x to browse the internet. I need to route the requests on eth0 to eth1 to be able to exit to internet. Can I do this on the UBUNTU machine with iptables? Thanks!

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• Is there an excuse for short variable names?

  - by KChaloux

  This has become a large frustration with the codebase I'm currently working in; many of our variable names are short and undescriptive. I'm the only developer left on the project, and there isn't documentation as to what most of them do, so I have to spend extra time tracking down what they represent. For example, I was reading over some code that updates the definition of an optical surface. The variables set at the start were as follows: double dR, dCV, dK, dDin, dDout, dRin, dRout dR = Convert.ToDouble(_tblAsphere.Rows[0].ItemArray.GetValue(1)); dCV = convert.ToDouble(_tblAsphere.Rows[1].ItemArray.GetValue(1)); ... and so on Maybe it's just me, but it told me essentially nothing about what they represented, which made understanding the code further down difficult. All I knew was that it was a variable parsed out specific row from a specific table, somewhere. After some searching, I found out what they meant: dR = radius dCV = curvature dK = conic constant dDin = inner aperture dDout = outer aperture dRin = inner radius dRout = outer radius I renamed them to essentially what I have up there. It lengthens some lines, but I feel like that's a fair trade off. This kind of naming scheme is used throughout a lot of the code however. I'm not sure if it's an artifact from developers who learned by working with older systems, or if there's a deeper reason behind it. Is there a good reason to name variables this way, or am I justified in updating them to more descriptive names as I come across them?

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• How to implement a no-login authentication system

  - by mrwooster

  I am looking to build a very loose authentication system that can track a user and link submitted data/comments to a specific user. The submissions are essentially anonymous, but a user may want to edit his submission/comment at a later date. I want the experience to be as smooth as possible so do not want to ask users to sign up for an account and then login each time. There is no point as their submissions are not in their name and to another user browsing the site, there is no way of linking a submission to a specific user (think anonymous comments on a blog post or pastie). However, the user should have the ability to edit (at least in the short term) the content they have posted. The way I imagine doing this would be to place a unique identifier in a cookie on the users machine. This would enable me to link a submission to a user, and while that cookie remained on the users machine, I would allow them to edit their content. Of course, if the cookie is lost, or the user accesses the site from a different browser, then they would not be able to edit their content, but this is not really an issue, they can always resubmit a new piece of content. Is there a better way of doing this? How can I implement this so that the user can edit their data for the longest possible amount of time.

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• How can I run my Symbian OS based Mobile phone applications on my computer?

  - by Ehsan Mamakani

  Is it possible to run mobile apps on computer? To be specific, I have a Nokia n95 phone running on Symbian OS

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• /etc/hosts.deny ignored in Ubuntu 14.04

  - by Matt

  I have Apache2 running on Ubuntu 14.04LTS. To begin securing network access to the machine, I want to start by blocking everything, then make specific allow statements for specific subnets to browse to sites hosted in Apache. The Ubuntu Server is installed with no packages selected during install, the only packages added after install are: apt-get update; apt-get install apache2, php5 (with additional php5-modules), openssh-server, mysql-client Following are my /etc/hosts.deny & /etc/hosts.allow settings: /etc/hosts.deny ALL:ALL /etc/hosts.allow has no allow entries at all. I would expect all network protocols to be denied. The symptom is that I can still web browse to sites hosted on the Apache web server even though there is a deny all statement in /etc/hosts.deny The system was rebooted after the deny entry was added. Why would /etc/hosts.deny with ALL:ALL be ignored and allow http browsing to sites hosted on the apache web server?

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• For a Javascript library, what is the best or standard way to support extensibility

  - by Michael Best

  Specifically, I want to support "plugins" that modify the behavior of parts of the library. I couldn't find much information on the web about this subject. But here are my ideas for how a library could be extensible. The library exports an object with both public and "protected" functions. A plugin can replace any of those functions, thus modifying the library's behavior. Advantages of this method are that it's simple and that the plugin's functions can have full access to the library's "protected" functions. Disadvantages are that the library may be harder to maintain with a larger set of exposed functions and it could be hard to debug if multiple plugins are involved (how to know which plugin modified which function?). The library provides an "add plugin" function that accepts an object with a specific interface. Internally, the library will use the plugin instead of it's own code if appropriate. With this method, the internals of the library can be rearranged more freely as long as it still supports the same plugin interface. This could also support having different plugin interfaces to modify different parts of the library. A disadvantage of this method is that the plugins may have to re-implement code that is already part of the library since the library's internal functions are not exported. The library provides a "set implementation" function that accepts an object inherited from a specific base object. The library's public API calls functions in the implementation object for any functionality that can be modified and the base implementation object includes the core functionality, with both external (to the API) and internal functions. A plugin creates a new implementation object, which inherits from the base object and replaces any functions it wants to modify. This combines advantages and disadvantages of both the other methods.

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