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  • Brief Explanation of C Supersets?

    - by Ben Hooper
    I'm getting more and more confused in regards to C's supersets the further I venture into the programming world. There's just so many versions.. C, C++, C#, Objective-C, Objective-C++ and God knows what else. I only know tidbits about these languages (some are object-oriented, some are procedural, C was originally developed for UNIX, C++ started as an extension and is used primarily on the Windows OS, Objective-C is primarily used on Linux and Mac OS/iOS, etc), but I'm not even sure that what I know is correct. I would just like someone to shed some light on what I "know" - a little bit more information about which are successive versions, which platforms each are generally used on, which are the best versions to learn, etc if anyone is feeling generous. :) Thanks. :)

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  • Excel Worksheet assignment in VB.Net doesn't compile

    - by Brian Hooper
    I'm converting a VB6 application into VB.Net and having trouble with the basics. I start off with:- Dim xl As Excel.Application Dim xlsheet As Excel.Worksheet Dim xlwbook As Excel.Workbook xl = New Excel.Application xlwbook = xl.Workbooks.Open(my_data.file_name) xlsheet = xlwbook.Sheets(1) but the last line doesn't compile; it reports Option Strict On disallows implicit conversion from 'Object' to 'Microsoft.Office.Interop.Excel.Worksheet' I can make this go away by replacing the line with xlsheet = CType(xlwbook.Sheets(1), Excel.Worksheet) but that does't look like the right thing to do to me. If the assignment is correct, I would have thought the object should naturally have the correct type. So: does anyone know what the correct thing I should be doing here?

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  • How should I lock the table in this VB6 / Access application?

    - by Brian Hooper
    I'm working on a VB6 application using an Access database. The application writes messages to a log table from time to time. Several instances of the application may be running simultaneously and to distinguish them they each have their own run number. The run number is deduced from the log table thus... Set record_set = New ADODB.Recordset query_string = "SELECT MAX(RUN_NUMBER) + 1 AS NEW_RUN_NUMBER FROM ERROR_LOG" record_set.CursorLocation = adUseClient record_set.Open query_string, database_connection, adOpenStatic, , adCmdText record_set.MoveLast If IsNull(record_set.Fields("NEW_RUN_NUMBER")) Then run_number = 0 Else run_number = record_set.Fields("NEW_RUN_NUMBER") End If command_string = "INSERT INTO ERROR_LOG (RUN_NUMBER, SEVERITY, MESSAGE) " & _ " VALUES (" & Str$(run_number) & ", " & _ " " & Str$(SEVERITY_INFORMATION) & ", " & _ " 'Run Started'); " database_connection.Execute command_string Obviously there is a small gap between the calculation of the run number and the appearance of the new row in the database, and to prevent another instance getting access between the two operations I'd like to lock the table; something along the lines of SET TRANSACTION READ WRITE RESERVING ERROR_LOG FOR PROTECTED WRITE; How should I go about doing this? Would locking the recordset do any good (the row in the record set doesn't match any particular row in the database)?

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  • ArchBeat Link-o-Rama for 2012-06-29

    - by Bob Rhubart
    Backward-compatible vs. forward-compatible: a tale of two clouds | William Vambenepe "There is the Cloud that provides value by requiring as few changes as possible. And there is the Cloud that provides value by raising the abstraction and operation level," says William Vambenepe. "The backward-compatible Cloud versus the forward-compatible Cloud." Vambenepe was a panelist on the recent ArchBeat podcast Public, Private, and Hybrid Clouds. Andrejus Baranovskis's Blog: ADF 11g PS5 Application with Customized BPM Worklist Task Flow (MDS Seeded Customization) Oracle ACE Director Andrejus Baranovskis investigates "how you can customize a standard BPM Task Flow through MDS Seeded customization." Oracle OpenWorld 2012 Music Festival If, after a day spent in sessions at Oracle Openworld, you want nothing more than to head back to your hotel for a quiet evening spent responding to email, please ignore the rest of this message. Because every night from Sept 30 to Oct 4 the streets of San Francisco will pulsate with music from a vast array of bands representing more musical styles than a single human brain an comprehend. It's the first ever Oracle Music Festival, baby, 7:00pm to 1:00am every night. Are those emails that important...? Resource Kit: Oracle Exadata - includes demos, videos, product datasheets, and technical white papers. This free resource kit includes several customer case study videos, two 3D product demos, several product datasheets, and three technical architecture white papers. Registration is required for the who don't already have a free Oracle.com membership account. Some execs contemplate making 'Bring Your Own Device' mandatory | ZDNet "Companies and agencies are recognizing that individual employees are doing a better job of handling and managing their devices than their harried and overworked IT departments – who need to focus on bigger priorities, such as analytics and cloud," says ZDNet SOA blogger Joe McKendrick. Podcast Show Notes: Public, Private, and Hybrid Clouds All three parts of this discussion are now available. Featuring a panel of leading Oracle cloud computing experts, including Dr. James Baty, Mark T. Nelson, Ajay Srivastava, and William Vambenepe, the discussion covers an overview of the various flavors of cloud computing, the importance of standards, Why cloud computing is a paradigm shift—and why it isn't, and advice on what architects need to know to take advantage of the cloud. And for those who prefer reading to listening, a complete transcript is also available. Amazon AMIs and Oracle VM templates (Cloud Migrations) Cloud migration expert Tom Laszewski shares an objective comparison of these two resources. IOUC : Blogs : Read the latest news on the global user group community - June 2012! The June 2012 edition of "Are You a Member Yet?"—the quarterly newsletter about Oracle user group communities around the world. Webcast: Introducing Identity Management 11g R2 - July 19 Date: Thursday, July 19, 2012 Time: 10am PT / 1pm ET Please join Oracle and customer executives for the launch of Oracle Identity Management 11g R2, the breakthrough technology that dramatically expands the reach of identity management to cloud and mobile environments. Thought for the Day "The most important single aspect of software development is to be clear about what you are trying to build." — Bjarne Stroustrup Source: SoftwareQuotes.com

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  • How do I Handle Ties When Ranking Results in MySQL?

    - by Laxmidi
    Hi, How does one handle ties when ranking results in a mysql query? I've simplified the table names and columns in this example, but it should illustrate my problem: SET @rank=0; SELECT student_names.students, @rank := @rank +1 AS rank, scores.grades FROM student_names LEFT JOIN scores ON student_names.students = scores.students ORDER BY scores.grades DESC So imagine the the above query produces: Students Rank Grades Al 1 90 Amy 2 90 George 3 78 Bob 4 73 Mary 5 NULL William 6 NULL Even though Al and Amy have the same grade, one is ranked higher than the other. Amy got ripped-off. How can I make it so that Amy and Al have the same ranking, so that they both have a rank of 1. Also, William and Mary didn't take the test. They bagged class and were smoking in the boy's room. They should be tied for last place. The correct ranking should be: Students Rank Grades Al 1 90 Amy 1 90 George 3 78 Bob 4 73 Mary 5 NULL William 5 NULL If anyone has any advice, please let me know. Thank you! -Laxmidi

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  • links for 2011-02-03

    - by Bob Rhubart
    Webcast: Reduce Complexity and Cost with Application Integration and SOA Speakers: Bruce Tierney (Product Director, Oracle Fusion Middleware) and Rajendran Rajaram (Oracle Technical Consultant). Thursday, February 17, 2011. 10 a.m. PT/1 p.m. ET. (tags: oracle otn soa fusionmiddleware) William Vambenepe: The API, the whole API and nothing but the API William asks: "When programming against a remote service, do you like to be provided with a library (or service stub) or do you prefer 'the API, the whole API, nothing but the API?'" (tags: oracle otn API webservices soa) Gary Myers: Fluffy white Oracle clouds by the hour Gary says: "Pay-by-the-hour options are becoming more common, with Amazon and Oracle are getting even more intimate in the next few months. Yes, you too will be able to pay for a quickie with the king of databases (or queen if you prefer that as a mental image). " (tags: oracle otn cloudcomputing amazon ec2) Conversation as User Assistance (the user assistance experience) "To take advantage of the conversations on the web as user assistance, enterprises must first establish where on the spectrum their community lies." -- Ultan O'Broin (tags: oracle otn enterprise2.0 userexperience) Webcast: Oracle WebCenter Suite – Giving Users a Modern Experience Thursday, February 10, 2011. 11 a.m. PT/2 p.m. ET. Speakers: Vince Casarez, Vice President of Enterprise 2.0 Product Management, Oracle; Erin Smith, Consulting Practice Manager – Portals, Oracle; Robert Wessa, Consulting Technical Director,  Enterprise 2.0 Infrastructure, Oracle.  (tags: oracle otn enterprise2.0 webcenter)

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  • links for 2010-06-16

    - by Bob Rhubart
    Automating Enterprise Reporting with SOA and Oracle Business Intelligence Publisher In the latest article in the Enterprise Solution Cookbook series, authors John Chung and Harish Gaur take you step-by-step through the development of an automated reporting platform using Oracle's SOA Suite, WebCenter, and Business Intelligence Publisher. (tags: soa enterprise2.0 architect entarch bpm oracle otn) @ORACLENERD: Job: Infrastructure Technical Architect Oracle ACE Chet "ORACLENERD" Justice shares the 411 on a great new gig for the right architect.  (tags: jobs employment infrastructure architect oracleace) Andrew Ness: Building a training environment for RAC, ASM and Dataguard on OEL 5.4 "In all the environments I've worked in where Oracle DBAs are involved, " says Ness, "they would have chewed my arm off to have this level of control over where their data lives." (tags: oracle grid database dba) Chris Quenelle: Virtualization terms UNIXy Goodness blogger Chris Quenelle dives into Wikipedia to compile this short but valuable glossary of virtualization terms.  (tags: solaris hypervisor virtualization) William Vambenepe: CMDB in the Cloud: not your father's CMDB "Most [customers] will be dealing with a mix of old-style and Cloud applications and they’ll be looking for a unified management approach. This helps CMDB incumbents. If you doubt the power to continuity, take a minute to realize that the entire value proposition of hypervisor-style virtualization is centered around it." -- William Vambenepe (tags: oracle otn cloud virtualization) Merv Adrian: Oracle Exadata: a Data Management Tipping Point "In this second version of its newest platform, Oracle not only provides the latest technology in each part of the data-management architecture, but also integrates them under the full control of one vendor, with a unified approach to leveraging the full stack." -- Merv Adrian (tags: oracle exadata database)

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  • ArchBeat Link-o-Rama for 2012-06-12

    - by Bob Rhubart
    Exalogic Elastic Cloud v2.0.1 sneak preview | Jos Nijhoff Jos Nijhoff lifts the hood and kicks the tires. Podcast with Oracle Cloud experts | William Vambenepe ow.ly William Vambenepe plugs the latest OTN ArchBeat podcast—in which he participates—but gets my name wrong. Networking in VirtualBox | The Fat Bloke The Fat Bloke shares "a quick overview of the different ways you can setup networking in VirtualBox." If you aren't among those finding bugs you might be among those complaining about them later | Markus Eisele Oracle ACE Director Markus Eisele offers some thoughts on JavaEE. ADF Tutorial Chapter 1: Introduction | Yannick Ongena Yannick Ongena's tutorial provides back-end functionality for a VIE portal. The truth is out there… | Arjan Kramer Capgemini's Arjan Kramer shares his opinion on the Vitrue acquisition and Oracle's Cloud strategy. Oracle and Cloud - The Truckin' Continues | Floyd Teter Oracle ACE Director Floyd Teter weighs in on the recent Oracle Cloud announcement. Thought for the Day "No amount of elegant programming or technology will solve a problem if it is improperly specified or understood to begin with." — Milt Bryce (1925 - 2005) Source: softwarequotes.com

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  • HP Network Utility Error

    - by William Ricci
    Using the HP Network Utility to team 2 ports on Windows 2008 R2 Standard results in this error:----- An error occurred when making a call into the operating system. Happens on either of two cards that are installed. This happened before and after upgrading to PSP 9.10. Uninstalled the HP Network Configuration Utility and re-installed version 10.65.0.6. Updated NIC drivers. NC382i DP - HP Broadcom 1Gb Multifunction Driver 7.4.23.0 (from 6.2.9.0) NC365T - Intel E1R 11.14.80.0 (from 11.14.49.0)

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  • Windows 8 asks DotNet 3.5 to install DotNet 3.5

    - by William.Ebe
    While trying to install some tools in Windows 8, it showed me a nice message saying it requires DotNet framework. Well, it's fine. But the bad part is I have offline installers for v2.0 and v3.5. While I'm trying to install those installers it shows me the same message as it shows above. I can't consider the web installer, because I don't want to download around 100MB. The file I have works fine for other versions like Windows 7 or XP. Any fixes?

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  • How do you handle authentication across domains?

    - by William Ratcliff
    I'm trying to save users of our services from having to have multiple accounts/passwords. I'm in a large organization and there's one group that handles part of user authentication for users who are from outside the facility (primarily for administrative functions). They store a secure cookie to establish a session and communicate only via HTTPS via the browser. Sessions expire either through: 1) explicit logout of the user 2) Inactivity 3) Browser closes My team is trying to write a web application to help users analyze data that they've taken (or are currently taking) while at our facility. We need to determine if a user is 1) authenticated 2) Some identifier for that user so we can store state for them (what analysis they are working on, etc.) So, the problem is how do you authenticate across domains (the authentication server for the other application lives in a border region between public and private--we will live in the public region). We have come up with some scenarios and I'd like advice about what is best practice, or if there is one we haven't considered. Let's start with the case where the user is authenticated with the authentication server. 1) The authentication server leaves a public cookie in the browser with their primary key for a user. If this is deemed sensitive, they encrypt it on their server and we have the key to decrypt it on our server. When the user visits our site, we check for this public cookie. We extract the user_id and use a public api for the authentication server to request if the user is logged in. If they are, they send us a response with: response={ userid :we can then map this to our own user ids. If necessary, we can request additional information such as email-address/display name once (to notify them if long running jobs are done, or to share results with other people, like with google_docs). account_is_active:Make sure that the account is still valid session_is_active: Is their session still active? If we query this for a valid user, this will have a side effect that we will reset the last_time_session_activated value and thus prolong their session with the authentication server last_time_session_activated: let us know how much time they have left ip_address_session_started_from:make sure the person at our site is coming from the same ip as they started the session at } Given this response, we either accept them as authenticated and move on with our app, or redirect them to the login page for the authentication server (question: if we give an encrypted portion of the response (signed by us) with the page to redirect them to, do we open any gaping security holes in the authentication server)? The flaw that we've found with this is that if the user visits evilsite.com and they look at the session cookie and send a query to the public api of the authentication server, they can keep the session alive and if our original user leaves the machine without logging out, then the next user will be able to access their session (this was possible before, but having the session alive eternally makes this worse). 2) The authentication server redirects all requests made to our domain to us and we send responses back through them to the user. Essentially, they act as a proxy. The advantage of this is that we can handshake with the authentication server, so it's safe to be trusted with the email address/name of the user and they don't have to reenter it So, if the user tries to go to: authentication_site/mysite_page1 they are redirected to mysite. Which would you choose, or is there a better way? The goal is to minimize the "Yet Another Password/Yet another username" problem... Thanks!!!!

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  • Call 'script' command and exit it from within a bash script

    - by William Jamieson
    I'm using the linux 'script' command http://www.linuxcommand.org/man_pages/script1.html to log all input and output in an interactive bash script. At the moment I have to call the script command, then run my bash script, then exit. I want to run the script and exit commands from within the actual bash script itself. How can I do this? I've tried script -a but that doesn't work for interactive scripts. Any assistance would be greatly appreciated.

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  • Shutdown in background - PHP

    - by William
    I'm trying to shutdown an Ubuntu machine from PHP and am running into an issue if I want to delay the shutdown. The PHP line I'm using is: exec("sudo shutdown -h +5 &", $output); Where 5 is however many minutes in the future I want to shutdown. My problem is that this won't background and Apache hangs until either the machine is shutdown or someone else cancels the shutdown. shell_exec() has the same result. Is there another way to do this that will return immediately?

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  • Windows Server 2008R2 Virtual Lab Activation strategies?

    - by William Hilsum
    I have a ESXi server that I use for testing, however, I am often needing to create additional Windows Server virtual machines. Typically, if I do not need a VM for more than 30 days, I simply do not activate. However, I have been doing a lot of HA/DRS testing recently and I have had a few servers up for more than this time. I have a MSDN account with Microsoft and have already received extra keys for Windows Server 2008 R2. I am doing nothing illegal and I am sure if I asked, they would issue more - but, I do not want to tempt fate! I have got 3 different "activated" windows snapshots I can get to at any time. If I try to clone these machines, I get the usual "did you copy or move them VM" message. If I choose copy, as far as I can see, it changes the BIOS ID and NIC MACs which is enough to disable activation. If I choose move, it keeps the activation fine (obviously, I know to change the NIC MAC - I believe I can leave the BIOS ID without problems). However, either of these options keeps the same SID code for the computer and user accounts. After the activation period has expired, as far as I can see, all that happens is optional updates do not work - it seems that the normal updates work fine. Based on this, as you can easily get in to Windows when not activated without any sort of workaround, I was wondering if it is ok just to leave a machine un activated? (However, I obviously would prefer if it was activated!) Alternatively, how dangerous is it run multiple machines on a non domain environment with the same SID? I am just interested to know if anyone can recommend a strategy for me? I have only found one solution that deals with bypassing activation - I am not interested in doing anything remotely dodgy... at a stretch, I am happy to rearm (I have never needed to keep a server past 100 days), but, I would rather have a proper strategy in place.

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  • Apache restart on Ubuntu - error “could not bind to address 0.0.0.0:80”

    - by william
    I'm a n00b - trying to get apache2 set up on Ubuntu 9.10 (Karmic Koala) on Rackspace Cloud. I have set up/configured OpenSSL and installed Apache, but Apache won't start. I assume its a misconfiguration in my /etc/apache2/sites-available/ssl or /etc/apache2/sites-available/default files) When I try to restart apache using the command: sudo /etc/init.d/apache2 restart I get the following error message: [error] (EAI 2)Name or service not known: Could not resolve host name *.80 -- ignoring! [error] (EAI 2)Name or service not known: Could not resolve host name *.80 -- ignoring! (98)Address already in use: make_sock: could not bind to address 0.0.0.0:80 no listening sockets available, shutting down Unable to open logs ...fail! For my /etc/apache2/sites-available/ssl I have used a virtual host of *:443. For my /etc/apache2/sites-available/default i have used a virtual host of *:80

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  • Everything Windows Explorer does hangs up t some time or another

    - by William Barnes
    Yes this is a duplicate of something I have tried to ask in the past. I think I am posting wrong since my first question was deleted OK I ran SCANNOW nd it came back with no problems. I booted in Safe mode and windows evplorer worked OK. I am not sure what that proves. I also ran AUTRUNS and disabled everything that you said, but it still dies. I read someplace that it could be a service program, but I can't find that link anymore. Something about shutting off all non-windows SP's and then start adding back SP's until it quits. The problem is that sometimes it will work, but most of the time it does not. Makes saving or retrieving anything impossible. SAVEAS hangs up, my Garmin Map updater hangs up etc.. I was having this problem before installing Garmin so I am reasonably sure it is not the problem HELP PLEASE, I don't have many brain cells left and can't afford to lose more.

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  • Linking JIRA and Confluence

    - by William
    I am trying to create a trust relationship between JIRA and Confluence so that I can insert JIRA issues into Confluence documents. However, in JIRA, when I try to initiate the relationship, I receive the error: "Unable to auto-configure a Consumer as the remote Consumer-Info count not be found.". When I attempt to create the relationship from Confluence, I receive this error: "Unable to auto-configure a Consumer as the remote Consumer-Info could not be found." What am I doing wrong here?

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  • Kickstarting VMWare ESX 4.1 (Error: No NIC with name bootif)

    - by William
    I'm having an issue kickstarting an installation of VMWaare ESX Classic 4.1. I've stripped down my kickstart a bit to just: accepteula keyboard us auth clearpart --firstdisk --overwritevmfs url --url=10.16.0.1/cblr/ks_mirror/esx-classic-4.1.0-260247 rootpw --iscrypted $1$zZJa3g7g$mD8d.6QgbPku1QovQTAps/ timezone 'US/Pacific' network --addvmportgroup=true --device=vmnic0 --bootproto=dhcp part '/boot' --fstype=ext3 --size=1100 --onfirstdisk part 'none' --fstype=vmkcore --size=110 --onfirstdisk part 'datastore1' --fstype=vmfs3 --size=8920 --grow --onfirstdisk virtualdisk 'esxconsole' --size=7920 --onvmfs='datastore1' part 'swap' --fstype=swap --size=916 --onvirtualdisk='esxconsole' part '/var/log' --fstype=ext3 --size=2000 --onvirtualdisk='esxconsole' part '/' --fstype=ext3 --size=5000 --grow --onvirtualdisk='esxconsole' %post --interpreter=bash However, when I attempt to use this kickstart during a PXE install with no additional kernel options, I get the following error: There was a problem with the Network Device specified on the command line. Error: No NIC found with name bootif If I comment out the network line in the kickstart, the error changes to: There was a problem with the Network Device specified on the command line. Error: No NIC found with name eth0 How can I fix this? Thanks.

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  • With Apache, is it possible to generate a directory listing for a non-folder URL?

    - by William Denniss
    Apache allows you to create a directory list (when configured) if you visit a folder with no index.html. What I want to know is, is it possible to get that same list but at a different URL? I'm already using index.html and want to keep it that way. i.e., this is what I'm looking for: http://example.com/blar/ - loads my index.html page (don't want this to change) http://example.com/blar/directory_list (I want this url to render the apache directory list instead)

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  • How do I install a newer version of GTK in Ubuntu without replacing the current one?

    - by William Friesen
    I am trying to compile file-roller from git, but running autogen.sh gives me this error configure: error: Package requirements (gtk+-3.0 >= 2.91.1) were not met: No package 'gtk+-3.0' found Consider adjusting the PKG_CONFIG_PATH environment variable if you installed software in a non-standard prefix. Alternatively, you may set the environment variables GTK_CFLAGS and GTK_LIBS to avoid the need to call pkg-config. See the pkg-config man page for more details. I am running Ubuntu Maverick and don't wish to completely replace my current version of gtk, glib, etc. I have tried to compile GTK using the --prefix argument of autogen.sh, but this gives me a similar error about my version of glib. How can I successfully compile file-roller using these new libraries without borking my install?

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  • Remote desktop use two out of four monitors

    - by William Gant
    I've recently upgraded my home workstation and now have four monitors on it. I work remotely most of the time and need some way to get remote desktop onto only two of those four monitors. The top two monitors (monitors 4 & 3, going from left to right) each have a maximum resolution of 1680x1050. The bottom two monitors (1 & 2) each have a maximum resolution of 1920x1080. In my .rpd file for this remote desktop connection, I have the following keys (I've clipped it for brevity) screen mode id:i:2 use multimon:i:1 desktopwidth:i:1920 desktopheight:i:2130 session bpp:i:32 winposstr:s:0,1,3,75,1655,675 Previously I was able to get away with just doing "mstsc /span" when I had only two monitors, but that isn't working now (and isn't desirable). I'd like for the new setup to only use two of my monitors. I don't really care which two. How do I alter the .rdp file to accomplish this?

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  • Postfix dynamic smtp_helo_name

    - by William
    I have a mail server that relays e-mails for two different domains. I want the smtp_helo_name to be different based on the domain. I'm assuming there is no way to do this via checking the mail headers, so I was wondering if there was a way to do it by sending mail for one domain to one IP, and mail for the other to another. I tried modified master.cf to do this: localhost:smtp inet n - n - - smtpd ip1:smtp inet n - n - - smtpd ip2:smtp inet n - n - - smtpd -o myhostnamee=example2.com And setting smtp_helo_name to $myhostname in main.cf I also tried doing -o smtp_helo_name instead, neither work. Any suggestions would be great. Thanks

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  • Does the mysql Client API Library version have to match the installed MySQL/Percona server version?

    - by William Jamieson
    I'm running Scientific Linux 6.3 (binary compaible with Redhat/CentOS/etc..) as a LAMP stack. I've installed Percona server and client v5.5 from the Percona yum repository. However when I run phpinfo() I notice that under the MySQL and mysqli sections, it lists the Client API Library version as 5.1.66, and not 5.5x. I'm guessing these need to match, at least to major versions, and I have no idea what the possible consequences of such a mismatch could be. Do I need to revert to Percona server and client v5.1? This is for a production environment so it needs to be right. I'd appreciate any input or experience people could offer. I'm running Scientific Linux 6.3 (binary compaible with Redhat/CentOS/etc..) as a LAMP stack. I've installed Percona server and client v5.5 from the Percona yum repository. However when I run phpinfo() I notice that under the MySQL and mysqli sections, it lists the Client API Library version as 5.1.66, and not 5.5x. I'm guessing these need to match, at least to major versions, and I have no idea what the possible consequences of such a mismatch could be. Do I need to revert to Percona server and client v5.1? This is for a production environment so it needs to be right. I'd appreciate any input or experience people could offer. (Note I will also be cross posting this on the Percona forums)

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  • Eclipse Helios on OS X Snow Leopard crashes frequently when editing certain PHP files

    - by William
    I use Eclipse Helios (Eclipse Platform: 3.6.0.I20100608-0911, Eclipse IDE for PHP Developers: 1.3.0.20100617-0520) all the time on OS X (Snow Leopard), and it seems I only run into trouble whenever I'm editing a PHP file that's part of the WordPress blogging framework. When I move my cursor to a variable or function name, that often triggers the beach ball of death. I suspect Eclipse is trying to look up that variable/function and for some reason that causes an endless loop. Sometimes it's not just variables or functions. Just today I was trying to replace all occurrences of a quoted string. Every time I clicked "Replace All", the program would freeze immediately after the string was replaced and the text cursor was moved to the replaced position. I think the moving of the text cursor is important, because I got the same result when I searched for the string (thus moving the cursor), but NOT when I searched for a nonexistent string. I tried disabling everything in my preferences related to marked occurrences, hovering, code assistance, etc. Nothing helps. I use Eclipse for all my projects, and I find that it's only WordPress projects where this happens. Here's my eclipse.ini file: -startup ../../../plugins/org.eclipse.equinox.launcher_1.1.0.v20100507.jar --launcher.library ../../../plugins/org.eclipse.equinox.launcher.cocoa.macosx_1.1.0.v20100503 -product org.eclipse.epp.package.php.product --launcher.defaultAction openFile -showsplash org.eclipse.platform --launcher.XXMaxPermSize 512m --launcher.defaultAction openFile -vmargs -Dosgi.requiredJavaVersion=1.5 -XstartOnFirstThread -Dorg.eclipse.swt.internal.carbon.smallFonts -XX:PermSize=128m -XX:MaxPermSize=128m -XX:MaxGCPauseMillis=10 -XX:MaxHeapFreeRatio=70 -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:+CMSIncrementalPacing -XX:CompileThreshold=5 -Xms128m -Xmx512m -Xss2m -Xdock:icon=../Resources/Eclipse.icns -XstartOnFirstThread -Dorg.eclipse.swt.internal.carbon.smallFonts -framework ../../../plugins/org.eclipse.osgi.services_3.2.100.v20100503.jar I have 4GB of RAM, so I don't know if the problem is I'm underutilizing my resources. Here's what I see over and over in the error log: !ENTRY org.eclipse.jface 2 0 2011-01-16 16:26:21.533 !MESSAGE Keybinding conflicts occurred. They may interfere with normal accelerator operation. !SUBENTRY 1 org.eclipse.jface 2 0 2011-01-16 16:26:21.533 !MESSAGE A conflict occurred for ALT+COMMAND+Q P: Binding(ALT+COMMAND+Q P, ParameterizedCommand(Command(org.eclipse.ui.views.showView,Show View, Shows a particular view, Category(org.eclipse.ui.category.views,Views,Commands for opening views,true), org.eclipse.ui.handlers.ShowViewHandler@2a46d1, [Lorg.eclipse.ui.internal.commands.Parameter;@18f50c2,,true), [Lorg.eclipse.core.commands.Parameterization;@1ff1855), org.eclipse.ui.defaultAcceleratorConfiguration, org.eclipse.ui.contexts.window,,cocoa,system) Binding(ALT+COMMAND+Q P, ParameterizedCommand(Command(org.eclipse.ui.views.showView,Show View, Shows a particular view, Category(org.eclipse.ui.category.views,Views,Commands for opening views,true), org.eclipse.ui.handlers.ShowViewHandler@2a46d1, [Lorg.eclipse.ui.internal.commands.Parameter;@18f50c2,,true), [Lorg.eclipse.core.commands.Parameterization;@96b40c), org.eclipse.ui.defaultAcceleratorConfiguration, org.eclipse.ui.contexts.window,,cocoa,system) !ENTRY org.eclipse.core.net 1 0 2011-01-16 16:26:22.217 !MESSAGE System property http.proxyHost has been set to 127.0.0.1 by an external source. This value will be overwritten using the values from the preferences !ENTRY org.eclipse.core.net 1 0 2011-01-16 16:26:22.217 !MESSAGE System property http.proxyPort has been set to 8888 by an external source. This value will be overwritten using the values from the preferences !ENTRY org.eclipse.core.net 1 0 2011-01-16 16:26:22.218 !MESSAGE System property https.proxyHost has been set to 127.0.0.1 by an external source. This value will be overwritten using the values from the preferences !ENTRY org.eclipse.core.net 1 0 2011-01-16 16:26:22.219 !MESSAGE System property https.proxyPort has been set to 8888 by an external source. This value will be overwritten using the values from the preferences I did some experimenting with the particular script that's giving me trouble. It's a hybrid of HTML and PHP, so Eclipse has to do both HTML and PHP validation. I wondered if the HTML validation had something to do with it, so I created a new file, copied the contents over, and messed with the doctype element. I found that if I replaced the well-formed XHTML 1.0 Strict doctype element with a generic doctype (as such: <!DOCTYPE html>), then I did not crash the program just by moving the cursor around. I set all HTML validation rules to "Ignore", but it still didn't solve my problems. For now, I'm just going to echo the doctype using PHP instead of entering it literally. That seems to prevent crashes. I notice that when I move the cursor around the document, Eclipse displays the "xpath" to my current location at the bottom of the screen. Sometimes there's a delay while it figures out my current path. Perhaps when it's validating against the Strict doctype, it has problems quickly calculating the xpath as I move the cursor around? Maybe it has a stack overflow that causes it to crash.

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