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  • Talking JavaOne with Rock Star Raghavan Srinivas

    - by Janice J. Heiss
    Raghavan Srinivas, affectionately known as “Rags,” is a two-time JavaOne Rock Star (from 2005 and 2011) who, as a Developer Advocate at Couchbase, gets his hands dirty with emerging technology directions and trends. His general focus is on distributed systems, with a specialization in cloud computing. He worked on Hadoop and HBase during its early stages, has spoken at conferences world-wide on a variety of technical topics, conducted and organized Hands-on Labs and taught graduate classes.He has 20 years of hands-on software development and over 10 years of architecture and technology evangelism experience and has worked for Digital Equipment Corporation, Sun Microsystems, Intuit and Accenture. He has evangelized and influenced the architecture of numerous technologies including the early releases of JavaFX, Java, Java EE, Java and XML, Java ME, AJAX and Web 2.0, and Java Security.Rags will be giving these sessions at JavaOne 2012: CON3570 -- Autosharding Enterprise to Social Gaming Applications with NoSQL and Couchbase CON3257 -- Script Bowl 2012: The Battle of the JVM-Based Languages (with Guillaume Laforge, Aaron Bedra, Dick Wall, and Dr Nic Williams) Rags emphasized the importance of the Cloud: “The Cloud and the Big Data are popular technologies not merely because they are trendy, but, largely due to the fact that it's possible to do massive data mining and use that information for business advantage,” he explained. I asked him what we should know about Hadoop. “Hadoop,” he remarked, “is mainly about using commodity hardware and achieving unprecedented scalability. At the heart of all this is the Java Virtual Machine which is running on each of these nodes. The vision of taking the processing to where the data resides is made possible by Java and Hadoop.” And the most exciting thing happening in the world of Java today? “I read recently that Java projects on github.com are just off the charts when compared to other projects. It's exciting to realize the robust growth of Java and the degree of collaboration amongst Java programmers.” He encourages Java developers to take advantage of Java 7 for Mac OS X which is now available for download. At the same time, he also encourages us to read the caveats.

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  • Automatically Snapshoting AWS instances (or other back up strategy)

    - by user1172468
    I just realized that my aws instance count has risen into the double digits. I'm currently backing portions of my folders and dbs and moving them off to a backup instance. What I think I should be doing is taking a snapshot of the instances (automatically) and persisting them on S3 so I have a running 7 day collection of daily backups. There is a question asking the same thing here, however the answers don't go into depth. So the closest answer seems to be: use a cron job to snapshot the instance. So do I run the cron job on the instance itself? or do I have a micro instance to run these snapshots? Could I get an example script or the command for say a linux flavor? what software must I have installed to get this to run? Thanks.

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  • career in Mobile sw/Application Development [closed]

    - by pramod
    i m planning to do a course on Wireless & mobile computing.The syllabus are given below.Please check & let me know whether its worth to do.How is the job prospects after that.I m a fresher & from electronic Engg.The modules are- *Wireless and Mobile Computing (WiMC) – Modules* C, C++ Programming and Data Structures 100 Hours C Revision C, C++ programming tools on linux(Vi editor, gdb etc.) OOP concepts Programming constructs Functions Access Specifiers Classes and Objects Overloading Inheritance Polymorphism Templates Data Structures in C++ Arrays, stacks, Queues, Linked Lists( Singly, Doubly, Circular) Trees, Threaded trees, AVL Trees Graphs, Sorting (bubble, Quick, Heap , Merge) System Development Methodology 18 Hours Software life cycle and various life cycle models Project Management Software: A Process Various Phases in s/w Development Risk Analysis and Management Software Quality Assurance Introduction to Coding Standards Software Project Management Testing Strategies and Tactics Project Management and Introduction to Risk Management Java Programming 110 Hours Data Types, Operators and Language Constructs Classes and Objects, Inner Classes and Inheritance Inheritance Interface and Package Exceptions Threads Java.lang Java.util Java.awt Java.io Java.applet Java.swing XML, XSL, DTD Java n/w programming Introduction to servlet Mobile and Wireless Technologies 30 Hours Basics of Wireless Technologies Cellular Communication: Single cell systems, multi-cell systems, frequency reuse, analog cellular systems, digital cellular systems GSM standard: Mobile Station, BTS, BSC, MSC, SMS sever, call processing and protocols CDMA standard: spread spectrum technologies, 2.5G and 3G Systems: HSCSD, GPRS, W-CDMA/UMTS,3GPP and international roaming, Multimedia services CDMA based cellular mobile communication systems Wireless Personal Area Networks: Bluetooth, IEEE 802.11a/b/g standards Mobile Handset Device Interfacing: Data Cables, IrDA, Bluetooth, Touch- Screen Interfacing Wireless Security, Telemetry Java Wireless Programming and Applications Development(J2ME) 100 Hours J2ME Architecture The CLDC and the KVM Tools and Development Process Classification of CLDC Target Devices CLDC Collections API CLDC Streams Model MIDlets MIDlet Lifecycle MIDP Programming MIDP Event Architecture High-Level Event Handling Low-Level Event Handling The CLDC Streams Model The CLDC Networking Package The MIDP Implementation Introduction to WAP, WML Script and XHTML Introduction to Multimedia Messaging Services (MMS) Symbian Programming 60 Hours Symbian OS basics Symbian OS services Symbian OS organization GUI approaches ROM building Debugging Hardware abstraction Base porting Symbian OS reference design porting File systems Overview of Symbian OS Development – DevKits, CustKits and SDKs CodeWarrior Tool Application & UI Development Client Server Framework ECOM STDLIB in Symbian iPhone Programming 80 Hours Introducing iPhone core specifications Understanding iPhone input and output Designing web pages for the iPhone Capturing iPhone events Introducing the webkit CSS transforms transitions and animations Using iUI for web apps Using Canvas for web apps Building web apps with Dashcode Writing Dashcode programs Debugging iPhone web pages SDK programming for web developers An introduction to object-oriented programming Introducing the iPhone OS Using Xcode and Interface builder Programming with the SDK Toolkit OS Concepts & Linux Programming 60 Hours Operating System Concepts What is an OS? Processes Scheduling & Synchronization Memory management Virtual Memory and Paging Linux Architecture Programming in Linux Linux Shell Programming Writing Device Drivers Configuring and Building GNU Cross-tool chain Configuring and Compiling Linux Virtual File System Porting Linux on Target Hardware WinCE.NET and Database Technology 80 Hours Execution Process in .NET Environment Language Interoperability Assemblies Need of C# Operators Namespaces & Assemblies Arrays Preprocessors Delegates and Events Boxing and Unboxing Regular Expression Collections Multithreading Programming Memory Management Exceptions Handling Win Forms Working with database ASP .NET Server Controls and client-side scripts ASP .NET Web Server Controls Validation Controls Principles of database management Need of RDBMS etc Client/Server Computing RDBMS Technologies Codd’s Rules Data Models Normalization Techniques ER Diagrams Data Flow Diagrams Database recovery & backup SQL Android Application 80 Hours Introduction of android Why develop for android Android SDK features Creating android activities Fundamental android UI design Intents, adapters, dialogs Android Technique for saving data Data base in Androids Maps, Geocoding, Location based services Toast, using alarms, Instant messaging Using blue tooth Using Telephony Introducing sensor manager Managing network and wi-fi connection Advanced androids development Linux kernel security Implement AIDL Interface. Project 120 Hours

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  • Use trackball to scroll, zoom, etc

    - by filledvoid
    I've got a Logitech Marble Trackball (which is great, btw). By setting one of the extra buttons as a "middle" mouse button, when I click it, many apps (like browsers) will start "scrolling mode" so that moving the trackball will scroll up and down. Most of the time, this is sufficient, but I figure it would be way cooler if I could have several "modes" to do different things like zooming, panning, rotating (particularly in GIMP). Then when I hold CTRL, CTRL+SHIFT, or some such, it would enter a new mode, and the trackball would behave differently. I found a couple questions similar to this that suggest using AutoHotKey, but I haven't found an example script to do this, nor can I find out to track mouse movements within AHK. Any pointers? hotkey for scrollwheel remedy for a no scroll wheel trackball? Thanks!

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  • TweetMeme Button or Template Plug-In for WLW

    - by Tim Murphy
    In my search for a way to allow readers to tweet post that I put on GWB I have come across the TweetMeme plug-in for Windows Live Writer.  It automatically puts a twitter button at either the top or bottom of your post depending on how you configure it.  It comes with a warning that it does not work with blog servers that strip out script from posts which I made me afraid it was going to make it incompatible with GWB.  This turned out to be the case so I figured we would need either an upgrade to the GWB platform or writing my own WLW plug-in.  In comes the Template plug-in.  This allows you to have standardized content that you can insert with a couple of clicks via the interface below. This solved the problem (sort of).  It required that I remove the standard javascript that is defined by Twitter’s button page.  In the end I am hoping for an update to our Subtext implementation to incorporate features like Facebook, Twitter, Reddit and G+, but this should help us until that comes along. Update: It looks like this was all useless since it seems that the buttons are in GWB.  I didn’t think I saw them before.  Either it is recent or I am blind. del.icio.us Tags: Twitter,TweetMeme,GWB,WLW,Windows Live Writer,Geeks With Blogs,plug-ins Tweet

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  • Reset Mac OS X (Snow Leopard) File Permissions -- All Files

    - by Frank
    Is their a script or process completely reset all file system file permissions to factory default? (Less restoring from a image backup or reinstalling the OS). This would include I've affected all files from / to Applications and home folder and all contents. (Everything) I've tried to use the Disk Utility's First Aid 'Repair Disk Permissions' but it didn't seem to touch or affect everything - some but not all. I've ran it twice so far... I've seen this but it's not quite the something. Fixing mac user file permissions, not the system The reason for all of this is I accidentally ran a chmod on all files (as sudo). Working too fast, now I'm in a hole.

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  • How to batch rename files using bash

    - by Alex Popov
    I know there are lots of such questions, but I couldn't find one (or a combination of several), which describes the things I want to do. I think I need to use regular expressions, but I am not very good with that. I use zsh. I have a folder with files, which I want to rename: I want the files challenge1.rb, challenge2.rb, challenge3.rb, etc. to be renamed to c1.rb, c2.rb etc. Similarly task1.rb and similar must be renamed to t1.rb etc. sample_spec_c1.rb, sample_spec_c2.rb etc. must be renamed to c1_spec.rb, c2_spec.rb etc. So I guess I need some combination of regular expressions and iteration, but I don't know how to write the bash script.

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  • jtreg update, March 2012

    - by jjg
    There is a new update for jtreg 4.1, b04, available. The primary changes have been to support faster and more reliable test runs, especially for tests in the jdk/ repository. [ For users inside Oracle, there is preliminary direct support for gathering code coverage data using jcov while running tests, and for generating a coverage report when all the tests have been run. ] -- jtreg can be downloaded from the OpenJDK jtreg page: http://openjdk.java.net/jtreg/. Scratch directories On platforms like Windows, if a test leaves a file open when the test is over, that can cause a problem for downstream tests, because the scratch directory cannot be emptied beforehand. This is addressed in agentvm mode by discarding any agents using that scratch directory and starting new agents using a new empty scratch directory. Successive directives use suffices _1, _2, etc. If you see such directories appearing in the work directory, that is an indication that files were left open in the preceding directory in the series. Locking support Some tests use shared system resources such as fixed port numbers. This causes a problem when running tests concurrently. So, you can now mark a directory such that all the tests within all such directories will be run sequentially, even if you use -concurrency:N on the command line to run the rest of the tests in parallel. This is seen as a short term solution: it is recommended that tests not use shared system resources whenever possible. If you are running multiple instances of jtreg on the same machine at the same time, you can use a new option -lock:file to specify a file to be used for file locking; otherwise, the locking will just be within the JVM used to run jtreg. "autovm mode" By default, if no options to the contrary are given on the command line, tests will be run in othervm mode. Now, a test suite can be marked so that the default execution mode is "agentvm" mode. In conjunction with this, you can now mark a directory such that all the tests within that directory will be run in "othervm" mode. Conceptually, this is equivalent to putting /othervm on every appropriate action on every test in that directory and any subdirectories. This is seen as a short term solution: it is recommended tests be adapted to use agentvm mode, or use "@run main/othervm" explicitly. Info in test result files The user name and jtreg version info are now stored in the properties near the beginning of the .jtr file. Build The makefiles used to build and test jtreg have been reorganized and simplified. jtreg is now using JT Harness version 4.4. Other jtreg provides access to GNOME_DESKTOP_SESSION_ID when set. jtreg ensures that shell tests are given an absolute path for the JDK under test. jtreg now honors the "first sentence rule" for the description given by @summary. jtreg saves the default locale before executing a test in samevm or agentvm mode, and restores it afterwards. Bug fixes jtreg tried to execute a test even if the compilation failed in agentvm mode because of a JVM crash. jtreg did not correctly handle the -compilejdk option. Acknowledgements Thanks to Alan, Amy, Andrey, Brad, Christine, Dima, Max, Mike, Sherman, Steve and others for their help, suggestions, bug reports and for testing this latest version.

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  • SQL SERVER – Get Directory Structure using Extended Stored Procedure xp_dirtree

    - by pinaldave
    Many years ago I wrote article SQL SERVER – Get a List of Fixed Hard Drive and Free Space on Server where I demonstrated using undocumented Stored Procedure to find the drive letter in local system and available free space. I received question in email from reader asking if there any way he can list directory structure within the T-SQL. When I inquired more he suggested that he needs this because he wanted set up backup of the data in certain structure. Well, there is one undocumented stored procedure exists which can do the same. However, please be vary to use any undocumented procedures. xp_dirtree 'C:\Windows' Execution of the above stored procedure will give following result. If you prefer you can insert the data in the temptable and use the same for further use. Here is the quick script which will insert the data into the temptable and retrieve from the same. CREATE TABLE #TempTable (Subdirectory VARCHAR(512), Depth INT); INSERT INTO #TempTable (Subdirectory, Depth) EXEC xp_dirtree 'C:\Windows' SELECT Subdirectory, Depth FROM #TempTable; DROP TABLE #TempTable; Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Stored Procedure, SQL Tips and Tricks, SQLServer, T SQL, Technology

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  • Gett Tor and Irssi working together

    - by Joey Bagodonuts
    Hi I am trying to get Tor working with Irssi. The directions at the bottom of this page Freenode Install Link say to :~/.irssi$ tor MapAddress 10.40.40.40 p4fsi4ockecnea7l.onion Feb 12 04:26:51.101 [notice] Tor v0.2.1.29 (r318f470bc5f2ad43). This is experimental software. Do not rely on it for strong anonymity. (Running on Linux x86_64) Feb 12 04:26:51.101 [warn] Command-line option 'p4fsi4ockecnea7l.onion' with no value. Failing. Feb 12 04:26:51.101 [err] Reading config failed--see warnings above. Or add it to the torrc file and reload irssi .irssi$ cat /etc/tor/torrc |grep 10.40.40 mapaddress 10.40.40.40 p4fsi4ockecnea7l.onion This is a paste from within irssi after running $torify irssi [04:33] Math::BigInt: couldn't load specified math lib(s), fallback to Math::BigInt::FastCalc at /usr/local/share/perl/5.10.1/Crypt/DH.pm line 6 [04:33] [04:33] *** Irssi: Loaded script cap_sasl So I thought it was a CPAN module issue. cpan[1]> install Math::BigInt This was also done for FastCalc and retried with force install. What am I doing wrong? Thanks

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  • What are Web runtime environments and programming languages

    - by Bradly Spicer
    I've been looking into the details behind these two different categories: Web runtime environments Web application programming languages I believe I have the correct information and have phrased it correctly but I am unsure. I have been searching for a while but only find snippets of information or what I can see as useless information (I could be wrong). Here are my descriptions so far: Web runtime environments - A Run-time environment implements part of the core behaviour of any computer language and allows it to be modified via an API or embedded domain-specific language. A web runtime environment is similar except it uses web based languages such as Java-script which utilises the core behaviour a computer language. Another example of a Run-time environment web language is JsLibs which is a standable JavaScript development runtime environment for using JavaScript as a general all round scripting language. JavaScript is often used to create responsive interfaces which improve the user experience and provide dynamic functionality without having to wait for the server to react and direct to another page. Web application programming languages - A web application program language is something that mimics a traditional desktop application within a web page. For example, using PHP you can create forms and tables which use a database similar to that of Microsoft Excel. Some of the other languages for web application programming are: Ajax Perl Ruby Here are some of the resources used: http://en.wikipedia.org/wiki/Web_application_development http://code.google.com/p/jslibs/ I would like some confirmation that the descriptions I have created are correct as I am still slightly unsure as to whether I have hit the nail on the head.

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  • Leverage Location Data with Maps in Your Apps

    - by stephen.garth
    Free Webinar: "Add Maps to Your Java Applications - The Easy Way" Wednesday May 26 at 9:00am Pacific Time Putting maps in your apps is a great way to put your apps on the map! Maps provide a location context that can trigger those "aha" moments leading to better business decisions. Tune into this free webinar to find out how easy it is to leverage spatial and location data, much of which is already in your Oracle Database. NAVTEQ's Dan Abugov and Oracle's Shay Shmeltzer combine their considerable experience with Oracle Spatial and Java application development to demonstrate how you can quickly and easily add maps to your Java applications, leveraging Oracle Spatial 11g, Oracle Fusion Middleware MapViewer, Oracle JDeveloper and ADF 11g. Register here. Learn more about Oracle spatial and location technology var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www."); document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E")); try { var pageTracker = _gat._getTracker("UA-13185312-1"); pageTracker._trackPageview(); } catch(err) {}

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  • How to jump through an IP ad in firefox?

    - by chris
    I use firefox with a lot of anti-ad extension, like adblock, NoScript, Ghosty etc. I found this IP 220.191.158.69 always in the list of NoScript, I want to ban this IP. I have checked it, searched it. It is from China telecom damn Ad. I guess NoScript can ban this IP already, but When I do not allow that IP, sometimes a webpage can not be loaded at first time, I need to refresh two or more times. I hate it... So I hope there are some way or browser extensions or script can jump through this damn IP.

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  • Terminal OS X Error when using Python

    - by Stephen
    Hey, I'm trying to learn how to program so I've installed the latest version of Python and I've been following the Byte of Python tutorial. I'm using Textwrangler I've only gotten as far as the simple "Hello World" intro and I'm already having a problem. I type out the code (just without the ""): "#!/usr/bin/python" "#Filename: helloworld.py" "print('Hello World')" and save it to my desktop as helloworld.py. I then go into terminal and type "python3 helloworld.py" and I get the following error message: /Library/Frameworks/Python.framework/Versions/3.1/Resources/Python.app/Contents/MacOS/Python: can't open file 'helloworld.py': [Errno 2] No such file or directory I was hoping someone could tell me what I'm doing wrong. If I choose to run the script from Textwrangler it operates just fine however I'm not able to access it from the Terminal. Thanks so much!

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  • How do I measure performance of a virtual server?

    - by Sergey
    I've got a VPS running Ubuntu. Being a virtual server, I understand that it shares resources with unknown number of other servers, and I'm noticing that it's considerably slower than my desktop machine. Is there some tool to measure the performance of the virtual machine? I'd be curious to see some approximate measure similar to bogomips, possibly for CPU (operations/sec), memory and disk read/write speed. I'd like to be able to compare those numbers to my desktop machine. I'm not interested in the specs of the actual physical machine my VPS is running on - by doing cat /proc/cpuinfo I can see that it's a nice quad-core Xeon machine, but it doesn't matter to me. I'm basically interested in how fast a program would run in my VPS - how many CPU operations it can make in a second, how many bytes to write to RAM or to disk. I only have ssh access to the machine so the tool need to be command-line. I could write a script which, say, does some calculations in a loop for a second and counts how many loops it was able to do, or something similar to measure disk and RAM performance. But I'm sure something like this already exists.

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  • release management system - architectural question

    - by Sonic Soul
    Every place i've worked created their own release process, and all of them worked pretty well, however it took pretty good effort (and often a dedicated team) to manage releases. I am currently at a new place, and about to design such a system, however this time the team is very lean and we won't have dedicated resources to releasing. It will be up to development manager until the system is proofed enough for other developers to use. we're using Subversion as code repository, Team City as the build server, Jira issue tracker, Oracle db. I was thinking about writing a basic workflow app, that will let developers create a new manifest which will specify the following items. release details (who, jira issues etc) workflow step (dev, test, uat, prod approved, prod released) source files that last item is where it can get hairy. especially with database scripts. Figured I'd ask if there is a good pattern, or off the shelf product that could help with the database part, or perhaps the whole process. I briefly tested Red Gate Oracle deployment tool, but it didn't work out as well as I had hoped (from 1 day of testing at least) Questions: I think I could get around releasing of our code with something like Octopus Deploy straight from Team City. I am not clear however, how I could create a simple database deployment part, that will track which version of which script (from subversion) has been deployed where. Is there already some utility I could utilize for navigating subversion to choose which scripts should be released, instead of writing one from scratch. I'd just need it to produce some manifest of paths + versions.

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  • Using SharePoint PeoplePicker control in custom ASP.NET pages

    - by Jignesh Gangajaliya
    I was developing custom ASP.NET page for a SharePoint project, and the page uses SharePoint PeoplePicker control. I needed to manipulate the control on the client side based on the user inputs. PeoplePicker Picker is a complex control and the difficult bit is that it contains many controls on the page (use the page source viewer to see the HTML tags generated). So getting into the right bit is tricky and also the default JavaScript functions like, control.disabled; control.focus(); will not work with PeoplePicker control. After some trial and error I came up with the solution to manipulate the control using JavaScript.  Here I am posting the JavaScript code snippet to enable/disable the PeoplePicker Control: function ToggleDisabledPeoplePicker(element, isDisabled) {     try     {         element.disabled = isDisabled;     }            catch(exception)     {}            if ((element.childNodes) && (element.childNodes.length > 0))     {         for (var index = 0; index < element.childNodes.length; index++)         {             ToggleDisabledPeoplePicker(element.childNodes[index], isDisabled);         }     } } // to disable the control ToggleDisabledPeoplePicker(document.getElementById("<%=txtMRA.ClientID%>"), true); The script shown below can be used to set focus back to the PeoplePicker control from custom JavaScript validation function: var found = false;         function SetFocusToPeoplePicker(element) {     try     {         if (element.id.lastIndexOf("upLevelDiv") !=-1)         {             element.focus();             found = true;             return;         }     }             catch(exception)     {}             if ((element.childNodes) && (element.childNodes.length > 0))     {         for (var index = 0; index < element.childNodes.length; index++)         {             if (found)             {                 found = false;                 break;             }                      SetFocusToPeoplePicker(element.childNodes[index]);         }     } } - Jignesh

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  • Change Gnome-Panel profile at startup according to number of displays

    - by ifischer
    I'm running Ubuntu 10.04 on a Laptop. I have a startup script which enables external displays, if they are connected. It runs at GDM startup, configured in /etc/gdm/Init/Default. When i'm running without external displays, Gnome should use 2 Panels. When i'm using 2 external displays, Gnome should add an additional Panel to the second display. But this should of course be removed again if i detach the external displays (and restart). Can i configure this use case by using Gnome Panel-profiles? I read that there is a startup option "--profile" for gnome-panel, but i don't know how and where i could switch the profile, especially because this has to be done after recognizing the number of displays. Or can i add a general Gnome profile and switch between those profiles somehow to achieve this behavior?

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  • Optimizing MySQL for small VPS

    - by Chris M
    I'm trying to optimize my MySQL config for a verrry small VPS. The VPS is also running NGINX/PHP-FPM and Magento; all with a limit of 250MB of RAM. This is an output of MySQL Tuner... -------- General Statistics -------------------------------------------------- [--] Skipped version check for MySQLTuner script [OK] Currently running supported MySQL version 5.1.41-3ubuntu12.8 [OK] Operating on 64-bit architecture -------- Storage Engine Statistics ------------------------------------------- [--] Status: -Archive -BDB -Federated +InnoDB -ISAM -NDBCluster [--] Data in MyISAM tables: 1M (Tables: 14) [--] Data in InnoDB tables: 29M (Tables: 301) [--] Data in MEMORY tables: 1M (Tables: 17) [!!] Total fragmented tables: 301 -------- Security Recommendations ------------------------------------------- [OK] All database users have passwords assigned -------- Performance Metrics ------------------------------------------------- [--] Up for: 2d 11h 14m 58s (1M q [8.038 qps], 33K conn, TX: 2B, RX: 618M) [--] Reads / Writes: 83% / 17% [--] Total buffers: 122.0M global + 8.6M per thread (100 max threads) [!!] Maximum possible memory usage: 978.2M (404% of installed RAM) [OK] Slow queries: 0% (37/1M) [OK] Highest usage of available connections: 6% (6/100) [OK] Key buffer size / total MyISAM indexes: 32.0M/282.0K [OK] Key buffer hit rate: 99.7% (358K cached / 1K reads) [OK] Query cache efficiency: 83.4% (1M cached / 1M selects) [!!] Query cache prunes per day: 48301 [OK] Sorts requiring temporary tables: 0% (0 temp sorts / 144K sorts) [OK] Temporary tables created on disk: 13% (27K on disk / 203K total) [OK] Thread cache hit rate: 99% (6 created / 33K connections) [!!] Table cache hit rate: 0% (32 open / 51K opened) [OK] Open file limit used: 1% (20/1K) [OK] Table locks acquired immediately: 99% (1M immediate / 1M locks) [!!] InnoDB data size / buffer pool: 29.2M/8.0M -------- Recommendations ----------------------------------------------------- General recommendations: Run OPTIMIZE TABLE to defragment tables for better performance Reduce your overall MySQL memory footprint for system stability Enable the slow query log to troubleshoot bad queries Increase table_cache gradually to avoid file descriptor limits Variables to adjust: *** MySQL's maximum memory usage is dangerously high *** *** Add RAM before increasing MySQL buffer variables *** query_cache_size (> 64M) table_cache (> 32) innodb_buffer_pool_size (>= 29M) and this is the config. # # The MySQL database server configuration file. # # You can copy this to one of: # - "/etc/mysql/my.cnf" to set global options, # - "~/.my.cnf" to set user-specific options. # # One can use all long options that the program supports. # Run program with --help to get a list of available options and with # --print-defaults to see which it would actually understand and use. # # For explanations see # http://dev.mysql.com/doc/mysql/en/server-system-variables.html # This will be passed to all mysql clients # It has been reported that passwords should be enclosed with ticks/quotes # escpecially if they contain "#" chars... # Remember to edit /etc/mysql/debian.cnf when changing the socket location. [client] port = 3306 socket = /var/run/mysqld/mysqld.sock # Here is entries for some specific programs # The following values assume you have at least 32M ram # This was formally known as [safe_mysqld]. Both versions are currently parsed. [mysqld_safe] socket = /var/run/mysqld/mysqld.sock nice = 0 [mysqld] # # * Basic Settings # # # * IMPORTANT # If you make changes to these settings and your system uses apparmor, you may # also need to also adjust /etc/apparmor.d/usr.sbin.mysqld. # user = mysql socket = /var/run/mysqld/mysqld.sock port = 3306 basedir = /usr datadir = /var/lib/mysql tmpdir = /tmp skip-external-locking # # Instead of skip-networking the default is now to listen only on # localhost which is more compatible and is not less secure. bind-address = 127.0.0.1 # # * Fine Tuning # key_buffer = 32M max_allowed_packet = 16M thread_stack = 192K thread_cache_size = 8 sort_buffer_size = 4M read_buffer_size = 4M myisam_sort_buffer_size = 16M # This replaces the startup script and checks MyISAM tables if needed # the first time they are touched myisam-recover = BACKUP max_connections = 100 table_cache = 32 tmp_table_size = 128M #thread_concurrency = 10 # # * Query Cache Configuration # #query_cache_limit = 1M query_cache_type = 1 query_cache_size = 64M # # * Logging and Replication # # Both location gets rotated by the cronjob. # Be aware that this log type is a performance killer. # As of 5.1 you can enable the log at runtime! #general_log_file = /var/log/mysql/mysql.log #general_log = 1 log_error = /var/log/mysql/error.log # Here you can see queries with especially long duration #log_slow_queries = /var/log/mysql/mysql-slow.log #long_query_time = 2 #log-queries-not-using-indexes # # The following can be used as easy to replay backup logs or for replication. # note: if you are setting up a replication slave, see README.Debian about # other settings you may need to change. #server-id = 1 #log_bin = /var/log/mysql/mysql-bin.log expire_logs_days = 10 max_binlog_size = 100M #binlog_do_db = include_database_name #binlog_ignore_db = include_database_name # # * InnoDB # # InnoDB is enabled by default with a 10MB datafile in /var/lib/mysql/. # Read the manual for more InnoDB related options. There are many! # # * Security Features # # Read the manual, too, if you want chroot! # chroot = /var/lib/mysql/ # # For generating SSL certificates I recommend the OpenSSL GUI "tinyca". # # ssl-ca=/etc/mysql/cacert.pem # ssl-cert=/etc/mysql/server-cert.pem # ssl-key=/etc/mysql/server-key.pem [mysqldump] quick quote-names max_allowed_packet = 16M [mysql] #no-auto-rehash # faster start of mysql but no tab completition [isamchk] key_buffer = 16M # # * IMPORTANT: Additional settings that can override those from this file! # The files must end with '.cnf', otherwise they'll be ignored. # !includedir /etc/mysql/conf.d/ The site contains 1 wordpress site,so lots of MYISAM but mostly static content as its not changing all that often (A wordpress cache plugin deals with this). And the Magento Site which consists of a lot of InnoDB tables, some MyISAM and some INMEMORY. The "read" side seems to be running pretty well with a mass of optimizations I've used on Magento, the NGINX setup and PHP-FPM + XCACHE. I'd love to have a kick in the right direction with the MySQL config so I'm not blindly altering it based on the MySQLTuner without understanding what I'm changing. Thanks

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  • Command line tool for listing ID3 tags under Linux

    - by petersohn
    I want to write a script that manipulates ID3 tags of mp3 files. I need a tool that reads the tags and outputs it in a format in a machine-readable format. For example, if I want it to output only the title, then it outputs the title, nothing else. I tried different tools like id3 or eyeD3, but they can only be used to write tags or to output them in a human-readable format. Of course I could just filter that output through sed, but it seems unnecessarily complicated to me.

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  • Building a Data Mart with Pentaho Data Integration Video Review by Diethard Steiner, Packt Publishing

    - by Compudicted
    Originally posted on: http://geekswithblogs.net/Compudicted/archive/2014/06/01/building-a-data-mart-with-pentaho-data-integration-video-review-again.aspx The Building a Data Mart with Pentaho Data Integration Video by Diethard Steiner from Packt Publishing is more than just a course on how to use Pentaho Data Integration, it also implements and uses the principals of the Data Warehousing (and I even heard the name of Ralph Kimball in the video). Indeed, a video watcher should be familiar with its concepts as the Star Schema, Slowly Changing Dimension types, etc. so I suggest prior to watching this course to consider skimming through the Data Warehouse concepts (if unfamiliar) or even better, read the excellent Ralph’s The Data Warehouse Tooolkit. By the way, the author expands beyond using Pentaho along to MySQL and MonetDB which is a real icing on the cake! Indeed, I even suggest the name of the course should be ‘Building a Data Warehouse with Pentaho’. To successfully complete the course one needs to know some Linux (Ubuntu used in the course), the VI editor and the Bash command shell, but it seems that similar requirements would also apply to the Windows OS. Additionally, knowing some basic SQL would not hurt. As I had said, MonetDB is used in this course several times which seems to be not anymore complex than say MySQL, but based on what I read is very well suited for fast querying big volumes of data thanks to having a columnstore (vertical data storage). I don’t see what else can be a barrier, the material is very digestible. On this note, I must add that the author does not cover how to acquire the software, so here is what I found may help: Pentaho: the free Community Edition must be more than anyone needs to learn it. Or even go into a POC. MonetDB can be downloaded (exists for both, Linux and Windows) from http://goo.gl/FYxMy0 (just see the appropriate link on the left). The author seems to be using Eclipse to run SQL code, one can get it from http://goo.gl/5CcuN. To create, or edit database entities and/or schema otherwise one can use a universal tool called SQuirreL, get it from http://squirrel-sql.sourceforge.net.   Next, I must confess Diethard is very knowledgeable in what he does and beyond. However, there will be some accent heard to the user of the course especially if one’s mother tongue language is English, but it I got over it in a few chapters. I liked the rate at which the material is being presented, it makes me feel I paid for every second Eventually, my impressions are: Pentaho is an awesome ETL offering, it is worth learning it very much (I am an ETL fan and a heavy user of SSIS) MonetDB is nice, it tickles my fancy to know it more Data Warehousing, despite all the BigData tool offerings (Hive, Scoop, Pig on Hadoop), using the traditional tools still rocks Chapters 2 to 6 were the most fun to me with chapter 8 being the most difficult.   In terms of closing, I highly recommend this video to anyone who needs to grasp Pentaho concepts quick, likewise, the course is very well suited for any developer on a “supposed to be done yesterday” type of a project. It is for a beginner to intermediate level ETL/DW developer. But one would need to learn more on Data Warehousing and Pentaho, for such I recommend the 5 star Pentaho Data Integration 4 Cookbook. Enjoy it! Disclaimer: I received this video from the publisher for the purpose of a public review.

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  • Building a Data Mart with Pentaho Data Integration Video Review by Diethard Steiner, Packt Publishing

    - by Compudicted
    Originally posted on: http://geekswithblogs.net/Compudicted/archive/2014/06/01/building-a-data-mart-with-pentaho-data-integration-video-review.aspx The Building a Data Mart with Pentaho Data Integration Video by Diethard Steiner from Packt Publishing is more than just a course on how to use Pentaho Data Integration, it also implements and uses the principals of the Data Warehousing (and I even heard the name of Ralph Kimball in the video). Indeed, a video watcher should be familiar with its concepts as the Star Schema, Slowly Changing Dimension types, etc. so I suggest prior to watching this course to consider skimming through the Data Warehouse concepts (if unfamiliar) or even better, read the excellent Ralph’s The Data Warehouse Tooolkit. By the way, the author expands beyond using Pentaho along to MySQL and MonetDB which is a real icing on the cake! Indeed, I even suggest the name of the course should be ‘Building a Data Warehouse with Pentaho’. To successfully complete the course one needs to know some Linux (Ubuntu used in the course), the VI editor and the Bash command shell, but it seems that similar requirements would also apply to the Weindows OS. Additionally, knowing some basic SQL would not hurt. As I had said, MonetDB is used in this course several times which seems to be not anymore complex than say MySQL, but based on what I read is very well suited for fast querying big volumes of data thanks to having a columnstore (vertical data storage). I don’t see what else can be a barrier, the material is very digestible. On this note, I must add that the author does not cover how to acquire the software, so here is what I found may help: Pentaho: the free Community Edition must be more than anyone needs to learn it. Or even go into a POC. MonetDB can be downloaded (exists for both, Linux and Windows) from http://goo.gl/FYxMy0 (just see the appropriate link on the left). The author seems to be using Eclipse to run SQL code, one can get it from http://goo.gl/5CcuN. To create, or edit database entities and/or schema otherwise one can use a universal tool called SQuirreL, get it from http://squirrel-sql.sourceforge.net.   Next, I must confess Diethard is very knowledgeable in what he does and beyond. However, there will be some accent heard to the user of the course especially if one’s mother tongue language is English, but it I got over it in a few chapters. I liked the rate at which the material is being presented, it makes me feel I paid for every second Eventually, my impressions are: Pentaho is an awesome ETL offering, it is worth learning it very much (I am an ETL fan and a heavy user of SSIS) MonetDB is nice, it tickles my fancy to know it more Data Warehousing, despite all the BigData tool offerings (Hive, Scoop, Pig on Hadoop), using the traditional tools still rocks Chapters 2 to 6 were the most fun to me with chapter 8 being the most difficult.   In terms of closing, I highly recommend this video to anyone who needs to grasp Pentaho concepts quick, likewise, the course is very well suited for any developer on a “supposed to be done yesterday” type of a project. It is for a beginner to intermediate level ETL/DW developer. But one would need to learn more on Data Warehousing and Pentaho, for such I recommend the 5 star Pentaho Data Integration 4 Cookbook. Enjoy it! Disclaimer: I received this video from the publisher for the purpose of a public review.

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  • CodePlex Daily Summary for Tuesday, May 29, 2012

    CodePlex Daily Summary for Tuesday, May 29, 2012Popular ReleasesDotNetNuke Azure Accelerator: DotNetNuke Azure Accelerator 6.2: Windows Azure deployments of DotNetNuke Community using virtual hard drive (cloud-drive) image that is created dynamically on the cloud. Enables the creation of new DotNetNuke host instances from on-premise to the cloud using a wizard that guides you on this process, creating the SQL Azure database, uploading the solution engine and associated service configurations. New features in this releaseModified the web roles endpoints to allow traffic on port 443 Changed the package unzip operati...Thales Simulator Library: Version 0.9.6: The Thales Simulator Library is an implementation of a software emulation of the Thales (formerly Zaxus & Racal) Hardware Security Module cryptographic device. This release fixes a problem with the FK command and a bug in the implementation of PIN block 05 format deconstruction. A new 0.9.6.Binaries file has been posted. This includes executable programs without an installer, including the GUI and console simulators, the key manager and the PVV clashing demo. Please note that you will need ...myManga: myManga v1.0.0.2: Fixed the 'Lost+Brain' error on MangaReader. The main download has this update. The second download is for those who have already downloaded the old v1.0.0.2. DELETE OLD EXE and DLLs before you copy the new files over.To update from v1.0.0.1:Extract new myManga EXE and DLLs from Zip to folder of choosing. Copy MangaInfo and MangaArchives folder from old myManga folder to new folder from step 1. ORDelete: The new myManga.exe contains the CoreMangaClasses.dll and Manga.dll internally. Delet...????: ????2.0.1: 1、?????。WiX Toolset: WiX v3.6 RC: WiX v3.6 RC (3.6.2928.0) provides feature complete Burn with VS11 support. For more information see Rob's blog post about the release: http://robmensching.com/blog/posts/2012/5/28/WiX-v3.6-Release-Candidate-availableJavascript .NET: Javascript .NET v0.7: SetParameter() reverts to its old behaviour of allowing JavaScript code to add new properties to wrapped C# objects. The behavior added briefly in 0.6 (throws an exception) can be had via the new SetParameterOptions.RejectUnknownProperties. TerminateExecution now uses its isolate to terminate the correct context automatically. Added support for converting all C# integral types, decimal and enums to JavaScript numbers. (Previously only the common types were handled properly.) Bug fixe...Indent Guides for Visual Studio: Indent Guides v12: Version History Changed in v12: background document analysis new options dialog with Quick Set selections for behavior new "glow" style for guides new menu icon in VS 11 preview control now uses editor theming highlighting can be customised on each line fixed issues with collapsed code blocks improved behaviour around left-aligned pragma/preprocessor commands (C#/C++) new settings for controlling guides in empty lines restructured settings storage (should be more reliable) ...callisto: callisto 2.0.29: Added DNS functionality to scripting. See documentation section for details of how to incorporate this into your scripts.ZXMAK2: Version 2.6.2.2: - implemented read port #7FFD glitch for ULA128 (fusetest) - fix unhandled exception inside open dialog - fix Z80 format serializer (support 55 bytes header & non compressed 128 blocks - thanks to Ralf) This release include SPRINTER emulation, but boot system disk image was removed.Phalanger - The PHP Language Compiler for the .NET Framework: 3.0 (May 2012): Fixes: unserialize() of negative float numbers fix pcre possesive quantifiers and character class containing ()[] array deserilization when the array contains a reference to ISerializable parsing lambda function fix round() reimplemented as it is in PHP to avoid .NET rounding errors filesize bypass for FileInfo.Length bug in Mono New features: Time zones reimplemented, uses Windows/Linux databaseSharePoint Euro 2012 - UEFA European Football Predictor: havivi.euro2012.wsp (1.1): New fetures:Admin enable / disable match Hide/Show Euro 2012 SharePoint lists (3 lists) Installing SharePoint Euro 2012 PredictorSharePoint Euro 2012 Predictor has been developed as a SharePoint Sandbox solution to support SharePoint Online (Office 365) Download the solution havivi.euro2012.wsp from the download page: Downloads Upload this solution to your Site Collection via the solutions area. Click on Activate to make the web parts in the solution available for use in the Site C...ScreenShot: InstallScreenShot: This is the current stable release.????SDK for .Net 4.0+(OAuth2.0+??V2?API): ??V2?SDK???: ????SDK for .Net 4.X???????PHP?SDK???OAuth??API???Client???。 ??????API?? ???????OAuth2.0???? ???:????????,DEMO??AppKey????????????????,?????AppKey,????AppKey???????????,?????“????>????>????>??????”.Net Code Samples: Code Samples: Code samples (SLNs).LINQ_Koans: LinqKoans v.02: Cleaned up a bitExpression Tree Visualizer for VS 2010: Expression Tree Visualizer Beta: This is a beta release, in this release some expression types are not handled and use a default visualization behavior. The first release will be published soon. Wait for it...Ulfi: Ulfi source: Build with Visual Studio 2010 Express C# or betterJayData - The cross-platform HTML5 data-management library for JavaScript: JayData 1.0 RC1 Refresh 2: JayData is a unified data access library for JavaScript developers to query and update data from different sources like webSQL, indexedDB, OData, Facebook or YQL. See it in action in this 6 minutes video: http://www.youtube.com/watch?v=LlJHgj1y0CU RC1 R2 Release highlights Knockout.js integrationUsing the Knockout.js module, your UI can be automatically refreshed when the data model changes, so you can develop the front-end of your data manager app even faster. Querying 1:N relations in W...Christoc's DotNetNuke Module Development Template: 00.00.08 for DNN6: BEFORE USE YOU need to install the MSBuild Community Tasks available from http://msbuildtasks.tigris.org For best results you should configure your development environment as described in this blog post Then read this latest blog post about customizing and using these custom templates. Installation is simple To use this template place the ZIP (not extracted) file in your My Documents\Visual Studio 2010\Templates\ProjectTemplates\Visual C#\Web OR for VB My Documents\Visual Studio 2010\Te...Microsoft Ajax Minifier: Microsoft Ajax Minifier 4.53: fix issue #18106, where member operators on numeric literals caused the member part to be duplicated when not minifying numeric literals ADD NEW FEATURE: ability to create source map files! The first mapfile format to be supported is the Script# format. Use the new -map filename switch to create map files when building your sources.New ProjectsActive Log Reader: The active log reader provides the ability for a client to subscribe to specific changes in a set of files in a directory. For example, it allows you to actively monitor all .log files in your C:\Windows directory (and sub-directories) and callback whenever the word "ERROR" shows up (or any regular expression you can come up with). The accompanying test project outlines example usage.ADO.NET light wrapper: ADO.NET light wrapper is thin IEnumerable layer about ADO.NET for provide easy way to access data with strong typing support. Allen Neighborhood Center: Allen Neighborhood Center data interactionsCildads: The first attempt at centryCMT: Course Management Tool ProjectCode Builder: this is the Builder project.Connect: this is the Connect project.Craig's Framework: A basic framework that is used to speed up building MVC applications and make certain things simpler.CRM 2011 Fetch XML Execute Tool: This is a dev tool used to execute fetch xml to get the results from the connected CRM 2011 instanceDallasDB: A struct based database. DallasDB will have no full functionality until at least version 0.0.1, and won't be ready for professional use until version 1.0.0. EasyMvc: It provides a trainning sample to develop a web application base on MVC3 EF4.0 SQL Compact 4. Besides, a common business permission, logging, configration have been applied simply. Share with some implement idea about web, mvc, jquery,orm. Appreciate your advice.Entity: this is the Entity project.FogLampz: FogLampz is a .NET wrapper around around the FogBugz API.Geeba: Geeba Forum for Students in BGU UniversityHibernate: this is the Hibernate project.JSense - IntelliSense for JavaScript: JSense provides JavaScript IntelliSense meta-automation for Visual Studio 2010 projectsMichael: this is Michael's project.ModAdder: Minecraft Mod InstallerMVVM ORM: The purpose of MVVM ORM is to create models and their interactions as defined in some database for WPF applications Models are derived from tables, views and stored procedures. Interactions include insert/update/delete, with FK relationships taken into account. nihao: The summary is required.Report: this is the Report project.REST Start Kit for BizTalk: This project enables BizTalk Server to expose RESTFul services through the WCF-Custom adapter. The library supports both receive and send, both XML and JSON with all HTTP verbs (GET, POST, PUT and DELETE). The solution is based on two custom WCF behaviors, one to be used on Receive Locations and one on Send Ports. Hopeully you'll find them easy to use, but if you have any issues, please use the discussions forum.RovignetaWinPhone7: bla bla blaScreenShot: A simple utility that enhances the experience of taking screenshots and annotating them. And all of it happens with the screenshot key that you are most used to. PrintScreen. Give it a try. You will forget the traditional tedious screenshot mechanism.SDM Exam 2012: This is an exam project for 4th semester.Struts: this is the Struts project.TheStoreDepot: depot for the StoreTibiaBot: TibiaBot is an open source application dedicated to extend your gaming experience in MMORPG game called Tibia. Besides of very many built-in functions, TibiaBot has implemented IronRuby script engine, which allows You to creating new functionality to base program.TopicInterDisciplinary: Topic inter-disciplinary owner: sherry, chen1984yangWebAppMatrix: ??WebApp??,?????!

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  • on Red Hat Enterprise and CentOS, what is creating /var/run/reboot-required?

    - by EdwardTeach
    On CentOS 5.8+ and Red Hat Enterprise 6+, when installing/updating packages, I notice a flag file /var/run/reboot-required is created when appropriate. On Ubuntu (and Debian too, I'm guessing), if package "update-notifier-common" is installed, a package postinst script triggers creation of this flag file. On RHEL/CentOS I can't figure out how this is happening. For instance, on RHEL and CentOS I recently installed several updates and /var/run/reboot-required was created. One of them was an "openssl" package upgrade. I assume this was what created the flag file, since on Ubuntu it also works this way. However I looked at all "rpm -q --scripts" for each updated package, and didn't see anything that was likely to have created that flag file. Mostly I saw "postinstall program: /sbin/ldconfig". So my questions are: What creates this flag file on RHEL/CentOS? Does it require a special package to be installed, analogous to the "update-notifier-common" package on Ubuntu?

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  • Folder permissions when using /etc/skel and pam

    - by rothgar
    I have a Red Hat 5.8 server that is bound to active directory and users are authenticated via active directory when they log in via sftp. User home folders are created during login using /etc/pam.d/system-auth. The specific line that creates the home folder is session optional pam_mkhomedir.so skel=/etc/skel/ umask=0066 This correctly gives home folders 711 permissions so no one else can read their directories. The problem is, the pam_mkhomedir.so also modifies permissions on all folders/files inside the /etc/skel folder which I don't want. There is a public_html folder (for apache) which needs to have 755 permissions so users can create web pages. Is there a way for me to either a) stop pam_mkhomedir.so from recursively changing all the file permissions or b) create a script that creates the public_html folder after skel is copied and to set the correct permissions?

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