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• What's the difference between sudo su - postgres and sudo -u postgres?

  - by Craig Ringer

  PostgreSQL users peer authentication on unix sockets by default, where the unix user must be the same as the PostgreSQL user. So people frequently use su or sudo to become the postgres superuser. I often see people using constructs like: sudo su - postgres rather than sudo -u postgres -i and I'm wondering why. Similarly, I've seen: sudo su - postgres -c psql instead of sudo -u postgres psql Without the leading sudo the su versions would make some sense if you were on an old platform without sudo. But why on a less than prehisoric UNIX or Linux would you use sudo su ?

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• Ubuntu doesn't boot due to GRUB-Problems

  - by Dave

  Users out there, I came here with the spark of a hope, that you could help me. I want to get rid of my old WinXP, because the Game-Support for it seems to slowly expire now... So I took a second drive, just an old empty one I had at hands (ATA-Maxtor 90648D3), plugged of the other drive with WinXP, so that it couldn't be harmed, and started the installationof Ubuntu 12.04. Everything went as it was supposed to, until the end. Normal shutdown after successful installation process. But when I tried to boot my new Ubuntu from the HDD, it said: error: out of disk. grub rescue> So, what to do now? I already tried a lot of things in the terminal, e.g. the update-grub as mentioned on http://opensource-sidh.blogspot.de/2011/06/recover-grub-live-ubuntu-cd-pendrive.html. Everything worked, he didn't complain about a missing data or anything, but at the end of the day he still wasn't able to boot! Next step was to change the etc/default/grub-file, so that it could load the ATA-drivers first, so that there is now problem with my drive. But even this didn't seem to have any effect, I'm still stuck with Ubuntu in the Live-CD-Mode... If there was anybody to help me out there, I would be very glad. Thanks for any support, Dave P.S.: I even tried to fix it with boot-repair, a small tool for Ubuntu, and it created a file with data that could probably help you to help me. You can find it on http://paste.ubuntu.com/1428022/

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• Oracle Flashback Technology - Webcast 9th June 2010

  - by Alex Blyth

  Hi All Here are the details for webcast on Oracle Flashback Technologies on Wednesday (9th June 2010) beginning at 1.30pm (Sydney, Australia Time). The Oracle Database architecture leverages the unique technological advances in the area of database recovery due to human errors. Oracle Flashback Technology provides a set of new features to view and rewind data back and forth in time. The Flashback features offer the capability to query historical data, perform change analysis, and perform self-service repair to recover from logical corruptions while the database is online. With Oracle Flashback Technology, you can indeed undo the past! Oracle9i introduced Flashback Query to provide a simple, powerful and completely non-disruptive mechanism for recovering from human errors. It allows users to view the state of data at a point in time in the past without requiring any structural changes to the database. Oracle Database 10g extended the Flashback Technology to provide fast and easy recovery at the database, table, row, and transaction level. Flashback Technology revolutionizes recovery by operating just on the changed data. The time it takes to recover the error is now equal to the same amount of time it took to make the mistake. Oracle 10g Flashback Technologies includes Flashback Database, Flashback Table, Flashback Drop, Flashback Versions Query, and Flashback Transaction Query. Flashback technology can just as easily be utilized for non-repair purposes, such as historical auditing with Flashback Query and undoing test changes with Flashback Database. Oracle Database 11g introduces an innovative method to manage and query long-term historical data with Flashback Data Archive. This release also provides an easy, one-step transaction backout operation, with the new Flashback Transaction capability. Webcast is at http://strtc.oracle.com (IE6, 7 & 8 supported only)Conference ID for the webcast is 6690835Conference Key: flashbackEnrollment is required. Please click here to enroll.Please use your real name in the name field (just makes it easier for us to help you out if we can't answer your questions on the call) Audio details: NZ Toll Free - 0800 888 157 orAU Toll Free - 1800420354 (or +61 2 8064 0613)Meeting ID: 7914841Meeting Passcode: 09062010 Talk to you all Wednesday 9th June Alex

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• Enable user registration - eJabberd

  - by travega

  I am a complete n00b to configuring Jabber/XMPP servers and I am hoping to get some help getting set up. I have done all of this and installed pidgin. I seem to be able set up my "admin-user" in pidgin no problem but when I try to register a new user I get a 403 Fobidden message back from pidgin. Do I need to change the ejabberd.cfg file to allow users to register? If so how do I go about it? If not what do I need to get basic chat and fileshare going?

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• Route traffic on vpn to another interface on an ASA 5510

  - by Dave

  I have a ASA 5510 that has about 60-70 vpn tunnels. I have four interfaces on the device: 1)External, 2)192.168.1.0, 3)192.168.2.0, 4) 192.168.3.0 A VPN tunnel is configured from the remote site (192.168.200.0) to the 192.168.2.0 subnet on the ASA. I have remote applications I would like the users at the remote site to be able to access which are hosted on the 192.168.3.0 subnet. I can route traffic between the subnets that are located on the ASA. Any way I can route traffic from the remote site to the 192.168.3.0?

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• How to detect when a user copies files from a server over the network?

  - by Mr. Graves

  I have a few virtual servers + desktops that are used for shared development with remote users, including some consultants. Each user has an account with access to most aspects of the server. I don't want to prevent people from being productive, or track passwords or read emails, but I do want to know when and what files they copy from the virtual server or what they upload from the server to a remote site, and what if any applications they install. This will help make sure my IP is protected, that no one is installing tools they shouldn't, and that things are licensed appropriately. What is the simplest way to do this? In order of importance I would say detecting file transfers off the machine to be most critical. Thanks

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• Web hosting providers for businesses (with offsite backups, disaster recovery options, etc.) [closed]

  - by Harry Muscle

  Possible Duplicate: How to find web hosting that meets my requirements? I'm wondering if anyone can point me in the direction of a couple of web hosting providers that are geared towards businesses. By this I mean providers that make it easy to create daily off site backups, are aware that websites require disaster recovery options and have these in place or are able to assist with them, etc. We currently have about a dozen sites with various providers, however, I've been asked to consolidate all of these into one provider and create a full disaster recovery plan. Unfortunately it seems like most providers are geared towards average users that don't require all these extra bells and whistles that businesses need. For example, HostGator, which is a very popular and well reviewed provider, doesn't even allow you to schedule full backups, they have to be manually requested via cPanel and then downloaded once available. If anyone can point out a couple companies that might be able to help with these sorts of things that would be much appreciated. Thanks, Harry P.S. I should also add that we are hoping to stay away from having to manage our own server, we're hoping for a fully managed solution like what HostGator would offer for example.

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• AsyncBridge? Async on .NET 4.0 using VS11

  - by Alex.Davies

  I've just found something quite cool. It's a code snippet that lets you use the real VS 11 C#5 compiler to write code that uses the async and await keywords, but to target .NET 4.0. It was published by Daniel Grunwald (from SharpDevelop).That means I can stop using the Async CTP for VS2010, which is not at all supported anymore, and a pain to install if you have windows updates turned on. Obviously I couldn't ask all my users to install .NET 4.5 beta, but .NET Demon is a VS 2010 extension, so we already have .NET 4.0. At the time of writing, VS11 is in beta still, but hopefully it's stable enough for my team to use!I would have written the code myself, but I had the wrong impression that the C# 5 beta compiler only looked in mscorlib for the helper classes it needs to implement async methods. Turns out you can provide them yourself. You can get the code here: https://gist.github.com/1961087You just add it to your project, and the compiler will apparently pick it up and use it to implement async/await. I'm at my parents' place for Easter without access to a machine with VS 11 to try it out. Let me know whether you get it to work!This reminds me of LINQBridge, which let us use C# 3 LINQ, but only require .NET 2. We should stick up a webpage to explain, with a nice easy dll, put it in nuget, and call it AsyncBridge.If you were really enthusiastic, you could re-implement the skeleton of the Task Parallel Library against .NET 2 to use async/await without even requiring .NET 4. Our usage stats suggest that practically everyone that uses Red Gate tools already has .NET 4 installed though, so I don't think I'll go to the effort.

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• Ensuring non conflicting components in a modular system

  - by Hailwood

  So lets say we are creating a simple "modular system" framework. The bare bones might be the user management. But we want things like the Page Manager, the Blog, the Image Gallery to all be "optional" components. So a developer could install the Page Manager to allow their client to add a static home page and about page with content they can easily edit with a wysiwyg editor. The developer could then also install the Blog component to allow the client to add blog entries. The developer could then also install the Gallery component to allow the client to show off a bunch of images. The thing is, all these components are designed to be independent, so how do we go about ensuring they don't clash? E.g. ensuring the client doesn't create a /gallery page with the Page Manager and then wonder why the gallery stopped working, or the same issue with the Blog component, assuming we allow the users to customize the URL structure of the blog (because remember, the Page Manager doesn't necessarily have to be there, so we might not wan't our blog posts to be Date/Title formatted), likewise our clients aren't always going to be happy to have their pages under pages/title formatting. My core question here is, when building a modular system how to we ensure that the modules don't conflict without restricting functionality? Do we just leave it up to the clients/developer using the modules to ensure they get setup in a way that does not conflict?

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• Exchange 2003 HTTP Account Error

  - by Ryaner

  We are trying to get one of our users connected to our Exchange 2003 server using the HTTP method as they already have an existing Exchange account on another server. The setup goes through and they appear to get connected fine however none of the subfolders are listed. Instead we get one folder of "Error-Pls file a Bug". The usual Google search just throws up nothing useful. Does anyone know how to fix this? Or has anyone actually gotten Outlook (2003 or 2007) to connect to an Exchange 2003 server?

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• DNS name not on cert

  - by blsub6

  I've got an interesting one... My users have always typed in 'mail' to get to their mail. There was an internal DNS A record that resolved that to the IP of the mail server. I'm putting in an Exchange server to replace that. In order for people to get their mail, I try putting in an A record that does the same thing as the previous one. When I try to get to OWA, it tells me that the certificate on the server is not trusted. I only have the names: mail.mydomain.com autodiscover.mydomain.com autodiscover.mydomain.internal mydomain.internal mailserver.mydomain.internal so when the browser sees that this cert is trying to cover https://mail/owa it says the cert's not trusted. What amy I supposed to do about that?

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• Make browsing safe for porn surfers

  - by Brett G

  At several places I've done some work at, I have a suspicion that some of the executives browse porn on their work computers. It appears this porn surfing has lead to virus infections on their computers despite the presence of an anti-virus. Filtering theses specific users' browsing is not an option, so what would be my next best solution be? I put Firefox + Adblock pro on their computers. I'm tempted to add NoScript, but I'm worried they'll start calling when noscript interferes with browsing on legit websites. Is there anything else I can due to mitigate this risk?

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• How to handle editing a large file for a non-technical user

  - by Luke

  I have a client who is given a tab delimited .txt file containing hundreds of thousands of rows. I have a user story as follows: As a user I want to take the text file and add a new value at the end of each line which contains the concatenated value of two of the columns. for example if the file read text_one text_two I need to output the following (preferably to a .txt file) text_one text_two text_onetext_two My first approach was to ask the vendor supplying the file to do the concatenation before providing the file, the easiest way to solve a problem is to eliminate it right? however they are very uncooperative and have point blank refused. I've looked at building a simple javascript application that does this client side so a non-technical user could select the file using a file selector. This approach has a few problems The file could be over a GB in size and so can't be loaded straight into memory, I've tried and the browser crashes There is no means to write a file in javascript so I'd need to output the content to the screen and have the user save it (somehow) I was thinking if I could get around the filesize limitations I could just output the edited content to the page and have the user save the page as a .txt file, however I think there is a better way than using javascript that will still accommodate the users lack of technical know-how. Please consider this question to be stack agnostic, but bear in mind that a nice little shell script or python script would be deemed unsuitable for a non technical user unless there is a way of "packaging" it nicely for a non-technical user. Updates The file is too large to open in excel. The process needs to be run weekly, but it doesn't require scheduling or automation...(yet)

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• Personal Virtual Desktop Collection: User Assignment

  - by Fitzroy

  Using Windows Server 2012 Remote Desktop Services, I have a 'Personal Virtual Desktop Collection' with automatic user assignment enabled. According to Microsoft "Personal virtual desktops are permanently assigned to a user account and the user logs on to the same virtual desktop each time." Is there a way either through the Server Manager UI or PowerShell to determine which user has been assigned to which VM? The only way I have found so far is to query the 'Remote Desktop Users' group on each VM in the collection, however that requires each VM to be powered on. There must be a better way.

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• Essbase Excel Add in - S.o.D.

  - by THE

  #cross { font-size: 72pt; } sadly another long lasting friend is about to be buried in the wet, cold data void that holds past programs (... and AOL CDs). The Essbase Excel Add In is about to be de-continued (see  Doc ID 1466700.1) in January '13. The (already out) version 11.1.2.2.x of the Excel Add In must be considered the last release of this particular program (Unless the guys from Applied OLAP bring out their own version next to the openOffice Add In that they already sport). As expected, SmartView achieved parity in functionality with Release 11.1.2.1.102 and ever since then it was just a question of time when our old buddy would get the shoe. For all users out there like me that have known and worked with the Excel Add In for the last decade(s) this is a loss. SmartView may have functionality parity, and may altogether be the stronger, open technology - capable of Planning forms, connection to HFM etc. .But (from my personal point of view) it will not give the end user the same direct access to his databases, with nothing between him and his Essbase Server. Of course it was to be expected that only one of the two could survive and it was obvious that this would be SmartView, so this does not come as a surprise. Still.A minute for an old friend . . . . . . Thank you, and let us look forward! Unless you had other plans for the upcoming season, why not spend it investigating SmartView for your Essbase interaction needs. We hear that the days between Christmas and new year hold unlimited potential to test out new things. Or take it as a new year resolution: "I will switch to SmartView at the earliest possible moment".

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• Oracle Fusion Applications Design Patterns Now Available

  - by Frank Nimphius

  "The Oracle Fusion Applications user experience design patterns are published! These new, reusable usability solutions and best-practices, which will join Oracle dashboard patterns and guidelines that are already available online, are used by Oracle to artfully bring to life a new standard in the user experience, or UX, of enterprise applications. Now, the Oracle applications development community can benefit from the science behind the Oracle Fusion Applications user experience, too.These Oracle Fusion Applications UX Design Patterns, or blueprints, enable Oracle applications developers and system implementers everywhere to leverage professional usability insight when [...]  designing exciting, new, highly usable applications -- in the cloud or on-premise.  Based on the Oracle Application Development Framework (ADF) components, the Oracle Fusion Applications patterns and guidelines are proven with real users and in the Applications UX usability labs, so you can get right to work coding productivity-enhancing designs that provide an advantage for your entire business.  What’s the best way to get started? We’ve made that easy, too. The Design Filter Tool (DeFT) selects the best pattern for your user type and task. Simply adapt your selection for your own task flow and content, and you’re on your way to a really great applications user experience. More Oracle applications design patterns and training are coming your way in the future. To provide feedback on the sets that are currently available, let us know in the comments section or use the contact form provided."

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• Intraforest user account merge with Active Directory

  - by Neobyte

  I have a scenario where there is a root domain (RD) and two child domains (CD1 and CD2). Users have accounts on both CD1 and CD2, with identical samAccountNames, names etc, and various applications either use the CD1 or CD2 account for authentication to resources. I need to collapse CD2 into CD1, so I want to merge the accounts together. However ADMT does not allow me this option (merge options are greyed out), I think because it does not support intraforest merge of accounts (although it does not explicitly state this anywhere in the documentation). My question is - what is the easiest way for me to merge these accounts? Ultimately all I really need (I think) is for the SID of CD2\user1 to be added to the SIDHistory of CD1\user1 - is there a tool that supports this? Computer accounts and profiles are not a concern for this scenario. Group migration is unlikely to be an issue either - CD2\user1 is usually granted resource access through membership of a group on CD1.

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• Tracking contributions from contributors not using git

  - by alex.jordan

  I have a central git repo located on a server. I have many contributors that are not tech savvy, do not have server access, and do not know anything about git. But they are able to contribute via the project's web side. Each of them logs on via a web browser and contributes to the project. I have set things up so that when they log on, each user's contributions are made into a cloned repo on the server that is specifically for that user. Periodically, I log on to the server, visit each of their repos, and do a git diff to make sure they haven't done anything bad. If all is well, I commit their changes and push them to the central repo. Of course I need to manually look at their changes so that I can add an appropriate commit message. But I would also like to track who made the changes. I am making the commit, and I (and the web server) are the only users that are actually writing anything to the server. I could track this in the commit messages. While this strikes me as wrong, if this is my only option, is there a way to make userx's cloned repo always include "userx: " before each commit message that I add, so that I do not have to remind myself which user's repo I am in? Or even better, is there an easy way for me to make the commit, but in such a way as I credit the user whose cloned repo I am in?

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• Legal issues regarding embedding a toolbar into a browser [closed]

  - by OmarOthman

  We are in the process of developing a software that provides service to internet users and we would like to ask about the legal liabilities of some issues. Of course, everything is to be done with the consent of the user of our software but our concern is about third party tools and services that may be invoked/used by our product. In particular, these are the concerns: (1) Embedding a toolbar to an existing browser. This screenshot is an example, where the words in the highlighted toolbar are passed to www.google.com for searching, and the contents of the window are the results of the search. I want to know if any consent should be obtained before such a toolbar can be embedded in a web browser, whether there are any legal requirements by the web browser; whether different web browsers have different requirements (at least for Internet Explorer, Firefox, Chrome, Opera and Safari). (2) Invoking a free website from that toolbar (like Google’s search page). The screenshot above demonstrates such an existing toolbar. (3) Full ownership and unrestricted access to the data entered to this toolbar. In the screenshot above, I want to take the words (translation english to spanish) and own them, i.e. storing them in my database and do some processing on them. (4) Ability to track the pages entered by the user starting from that free website. In the screenshot above, you can notice that the user opted only for the third result, whose URL is translate.google.com. I want to have access to this and all URLs clicked from this page for some processing as well. This is a commercial application, so I need a very concrete, precise and reference-supported answer.

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• Active Directory with nodes in multiple IP Addresses

  - by Stormshadow

  I have written some code to fetch user information from an Active Directory Server. Suppose the Active Directory Server has nodes, each of which is another Active Directory Installation in a different geographic location. Eg: one AD server in US and another in Australia with a root AD Server in US with the former two as nodes. Would the filter queries I write for searching users across geographic locations work if I run them on the root AD server ?. The query I use is (|(objectClass=user)(objectClass=person)(objectClass=inetOrgPerson)) I cannot actually test this scenario but need to know the what will happen here.

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• Active Directory with nodes in multiple IP Addresses

  - by Stormshadow

  I have written some code to fetch user information from an Active Directory Server. Suppose the Active Directory Server has nodes, each of which is another Active Directory Installation in a different geographic location. Eg: one AD server in US and another in Australia with a root AD Server in US with the former two as nodes. Would the filter queries I write for searching users across geographic locations work if I run them on the root AD server ?. The query I use is (|(objectClass=user)(objectClass=person)(objectClass=inetOrgPerson)) I cannot actually test this scenario but need to know the what will happen here.

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• "System.Data.OracleClient requires Oracle client software version 8.1.7 or greater." Error Message

  - by Jandost Khoso

  Quick resolution: Give full permission to AUTHENTICATED USERS in following folders. a) ORACLE_HOME b) Program Files\ORACLE   Check your PATH. You might have installed different clients in your system and your .NET application is pointing to a home with inappoperiate client. What your .NET application should load is OCI.DLL with File version more than 8.1.7. According to the MSDN document Oracle and ADO.NET:   "The .NET Framework Data Provider for Oracle provides access to an Oracle database using the Oracle Call Interface (OCI) as provided by Oracle Client software. The functionality of the data provider is designed to be similar to that of the .NET Framework data providers for SQL Server, OLE DB, and ODBC. "     The MSDN document System Requirements (Oracle) says: "The .NET Framework Data Provider for Oracle requires Microsoft Data Access Components (MDAC) version 2.6 or later. MDAC 2.8 SP1 is recommended. You must also have Oracle 8i Release 3 (8.1.7) Client or later installed. "   Both the .NET Framework Data Provider for Oracle and Oracle Data Provider for .NET are data providers to access Oracle database. The former ships with .NET Framework and requires Oracle client version 8.1.7 or above. The latter is provided by Oracle company and requires Oracle client version 9.2 or later.     The Oracle Data Provider for .NET (ODP.NET) features optimized ADO.NET data access to the Oracle database. ODP.NET allows developers to take advantage of advanced Oracle database functionality, including Real Application Clusters, XML DB, and advanced security.   See the document Comparing the Microsoft .NET Framework 1.1 Data Provider for Oracle and the Oracle Data Provider for .NET for more information about the difference.

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• Is there a shell-independent HUD-like menu search tool for Xfce/GNOME/Cinnamon?

  - by Redsandro

  The Ubuntu Heads-Up Display (HUD) - you love it or you hate it. Personally I rather like a classic desktop, so I use Xfce or GNOME-fork Cinnamon, and I'd like to keep those menu's where they are. But the HUD is pretty awesome when your menus are complex and you forgot where an option sits. This makes that search trick very interesting. I know the HUD is Unity specific. I am looking for a HUD-like tool to complement the menu in shells other than Unity. There is Appmenu Runner for KDE that does this. There is also appmenu-qt for KDE. Problem with the above is that it uses KDE libs, and it only works for KDE apps. This is Linux, there aught to be something like this for GNOME/GTK apps, right? Looking for any tool that can search the menus. I already use(d) Synapse, Kupfer and GNOME Do, but those are simply app-launchers (with some tricks). Something like that would suffice if only they included searching the menus for the currently focused application. The HUD allows users to activate menu items by typing part of the name. It uses a fuzzy search algorithm that will highlight partial matches. It can match menu items that are multiple layers deep in an application's menu hierarchy. The feature, which replaces traditional menu accelerators, is activated by pressing the alt key. Similar questions: Is there a way to search a menu bar in Debian? - Unix.StackExchange How can I access menu bar items alike hud (unity)? - Unix.StackExchange HUD in other window managers (especially xmonad) - AskUbuntu

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• Did Oracle make public any plans to charge for JDK in the near future? [closed]

  - by Eduard Florinescu

  I recently read an article: Twelve Disaster Scenarios Which Could Damage the Technology Industry which mentioned among other the possible "disaster scenarios" also: Oracle starts charging for the JDK, giving the following as argument: Oracle could start requiring license fees for the JDK from everyone but desktop users who haven't uninstalled the Java plug-in for some reason. This would burn down half the Java server-side market, but allow Oracle to fully monetize its acquisitions and investments. [...] Oracle tends to destroy markets to create products it can fully monetize. Even if you're not a Java developer, this would have a ripple effect throughout the market. [...] I actually haven't figured out why Larry hasn't decided Java should go this route yet. Some version of this scenario is actually in my company's statement of risks. I know guessing for the future is impossible, and speculating about that would be endless so I will try to frame my question in an objective answarable way: Did Oracle or someone from Oracle under anonymity, make public, or hinted, leaked to the public such a possibility or the above is plain journalistic speculation? I am unable to find the answer myself with Google generating a lot of noise by searching JDK.

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• How do I copy a package from Debian to my PPA?

  - by Bernhard Reiter

  I'd like to add the latest gourmet package from Debian sid to our team's PPA so Ubuntu users who would like to run an up-to-date version of Gourmet can add that PPA to their software sources. (Dependency-wise, that shouldn't be much of an issue as pretty much all our current dependencies are already available in all currently supported Ubuntu versions.) I've downloaded the *.dsc file and debian and orig tarballs, and even figured out I could use this for the package's source.changes file. I also downloaded the Debian maintainer's public key so dput can validate the package. I then tried to upload the package to our PPA using dput ppa:~gourmet/ppa gourmet_0.17.3-1_source.changes (I also tried without the tilda.) This seemed to succeed, but I didn't get a confirmation email, and no packages are now displayed at our PPA, which leads me to believe that the package was rejected because the Debian maintainer's key is obviously not among our team members' keys. So what's the easiest way to "copy" a package from Debian (sid) to a Launchpad PPA? Do I really need to rebuild the entire package locally before I can upload it?

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