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• Conditional AddHandler Directive

  - by Itai

  Is it possible to conditionally call AddHandler in the .htaccess under Apache (2.x)? My present situation requires that a certain AddHandler is needed by one production server but that one breaks the development server. This requires to have 2 versions of .htaccess which is pain. So, instead I would like to wrap one AddHandler within a conditional. Something of this sort: IF IP=='1.2.3.4' THEN AddHandler type/foo .ext ENDIF The problem is new but out of my control for now. I know this is far from ideal and the servers used to match 100% as they should but temporarily they cannot.

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• Canon Mx772 printer recognized, drivers loaded...but all print jobs "Held"

  - by user212169

  BRAND NEW to Ubuntu but loving it so far. I have a Canon MX772 wireless printing running on my network and am able to print fine from a PC and Mac. Using the printers IP, Ubuntu was able to find it and I accepted all of the "recommended" items (it found a Canon MX770 driver). Everything seems to load fine...but the test page does not print, nor does any print commands make it to the printer. If I open the print dialogue jobs are shown as "held" and when I look at the jobs attributes, I see "Job printer state message=cannot specify model number" and then a few lines down "job state reasons=aborted by system". If I try to "resume" it immediately goes back to "held". I can successfully ping the IP of the printer. Would be very appreciative of other ideas...printing is the last check in the box before I am all set up. Thanks!

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• Why is Adobe Air so underrated for building mobile apps?

  - by Marcelo de Assis

  I worked with Adobe Flash related technologies for the last 5 years, although not being a big fan of Adobe. I see some little bugs happening in some apps, but I cannot imagine why a lot of big companies do not even think to use use Adobe Air as a good technology for their mobile apps. I see a lot of mobile developer positions asking for experts in Android or iOS , but very much less positions asking for Adobe Air, even when Adobe Air apps have the advantage of being multi-plataform, with the same app working in Blackberry, iOS and Android. Is so much easier to develop a game using Flash, than using Android SDK, for example. It really have flaws (that I never saw) or it is just some kind of mass prejudgement? I also would like to hear what a project manager or a indie developer takes when choosing a plataform for building apps.

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• Run virtualbox in other X session

  - by Valicek1

  I'm running ubuntu on my laptop (host). Inside ubuntu, there is running one instance of virtualbox. (where is installed MS Windows). My idea is to run virtualbox in separate X session (something like multiuser). If it is not clear, i'll try to explain... When I want to visit tty1, I'll press CTRL+ALT+F1. To return to my Unity desktop, I'm gona use CTRL+ALT+F7... And here comes what I need. After pressing CTRL+ALT+F8 show fullscreen virtualbox windows system, just to switch as ttys.. I am using Ubuntu 14.10. I have wasted hours by using google to find some solution, but my biggest prolem is I cannot name the problem.

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• Can CSS be copyrighted?

  - by Emily

  I know CSS on a website is protected under the website's copyright since it is considered part of the overall design. I also know that images used inCSS are copyrightable. How about when CSS is used to create images? There is a CSS3 icon set that has a $25 license fee. Another developer claims those images to be copyrighted and that it is illegal to use any of the icons unless you pay the fee. I say you cannot copyright a chunk of code and if I recreate an arrow or disc icon in my CSS (whether I copy his code or write my own) he has no recourse. Can CSS, by itself, be copyrighted?

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• Unable to get prosody running on Ubuntu 10.04 (lua issues)

  - by user90374

  All this is performed on Ubuntu 10.04.4 LTS Server I installed LUA 5.1.4 following this procedure - http://ubuntuforums.org/showthread.php?t=1874860 I installed prosody following this command (after downloading the package) - sudo dpkg -i prosody_0.8.2-1_i386.deb After installation, I get the following error: I have tried to use as suggested luarock and sudo apt-get install to fix these. But still it keeps showing me these errors. Selecting previously deselected package prosody. (Reading database ... 59416 files and directories currently installed.) Unpacking prosody (from prosody_0.8.2-1_i386.deb) ... Setting up prosody (0.8.2-1) ... * Starting Prosody XMPP Server prosody ************** Prosody was unable to find luaexpat This package can be obtained in the following ways: Source: www[dot]keplerproject[dot]org/luaexpat/ Debian/Ubuntu: sudo apt-get install liblua5.1-expat0 luarocks: luarocks install luaexpat luaexpat is required for Prosody to run, so we will now exit. More help can be found on our website, at prosody[dot]im/doc/depends ************ Prosody was unable to find luasocket This package can be obtained in the following ways: Source: www[dot]tecgraf[dot]puc-rio[dot]br/~diego/professional/luasocket/ Debian/Ubuntu: sudo apt-get install liblua5.1-socket2 luarocks: luarocks install luasocket luasocket is required for Prosody to run, so we will now exit. More help can be found on our website, at prosody[dot]im/doc/depends ************ Prosody was unable to find LuaSec This package can be obtained in the following ways: Source: www[dot]inf[dot]puc-rio[dot]br/~brunoos/luasec/ Debian/Ubuntu: prosody[dot]im/download/start#debian_and_ubuntu luarocks: luarocks install luasec SSL/TLS support will not be available More help can be found on our website, at prosody[dot]im/doc/depends [fail] invoke-rc.d: initscript prosody, action "start" failed. dpkg: error processing prosody (--install): subprocess installed post-installation script returned error exit status 1 Processing triggers for man-db ... Processing triggers for ureadahead ... Errors were encountered while processing: prosody Thanks a lot for your patience and answers.

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• Xen 4.0.1 on Ubuntu 10.10 not booting

  - by Disco

  I'm trying to get Xen 4.0.1 run as dom0 on a fresh/clean install of 10.10 desktop (x64). Followed the step by step tutorial at http://wiki.xensource.com/xenwiki/Xen4.0 I have the pvops kernel in /boot, also included the ext4 fs support by recompiling the kernel by : make -j6 linux-2.6-pvops-config CONFIGMODE=menuconfig make -j6 linux-2.6-pvops-build make -j6 linux-2.6-pvops-install Here's my grub entry : menuentry 'Xen4' --class ubuntu --class gnu-linux --class gnu --class os { recordfail insmod part_msdos insmod ext2 insmod ext3 set root='(hd0,msdos1)' search --no-floppy --fs-uuid --set 2bf3177a-92fd-4196-901a-da8d810b04b4 multiboot /xen-4.0.gz dom0_mem=1024M loglvl=all guest_loglvl=all module /vmlinuz-2.6.32.27 root=UUID=2bf3177a-92fd-4196-901a-da8d810b04b4 ro module /initrd.img-2.6.32.27 } blkid /dev/sda1 gives the : /dev/sda1: UUID="2bf3177a-92fd-4196-901a-da8d810b04b4" TYPE="ext3" My partition shemes is : /boot (ext3) / (ext4) Whatever option i've tried i end up with : mounting none on /dev failed: no such file or directory And message complaining that it cannot find the device with uuid ... It's taking my hairs out, if somone has a clue ...

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• Java Cryptography Extension

  - by Adam Tannon

  I was told that in order to support AES256 encryption inside my Java app that I would need the JCE with Unlimited Strength Jurisdiction Policy Files. I downloaded this from Oracle and unzipped it and I'm only seeing 2 JARs: local_policy.jar; and US_export_polic.jar I just want to confirm I'm not missing anything here! My understanding (after reading the README.txt) is that I just drop these two into my <JAVA_HOME>/lib/security/ directory and they should be installed. By the names of these JARs I have to assume that its not the Java Crypto API that cannot handle AES256, but it's in fact a legal issue, perhaps? And that these two JARs basically tell the JRE "yes, it's legally-acceptable to run this level of crypto (AES256)." Am I correct or off-base?

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• How to efficiently preserve a really big navigation history in Firefox?

  - by brandizzi

  When I was using Mac, my Firefox stored items in its history for really long times. Sometimes I needed to find a link to a site I have seen two years ago and it found it! Also, the autocomplete in the Firefox bar is really great, so a long history and the autocompleting yield a wonderful feature to me. Unfortunately, it seems this does not happen in Ubuntu's Firefox. I looked for solutions but I just got some Firefox developers saying the option of expanding history is out for performance issues and one is well advised to not try to change it (which read to me as saying "we cannot make it work well so we limit the scope"). Anyway, my question is: is there a way of efficiently expand the size of Firefox history? Sorry for my bitterness, but a solution with strings attached (mostly say that I should not do it, like this addon) is not solution for me. Does someone have the same need of mine and found a solution?

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• Mac OSX: which folders should ClamXav Sentry watch?

  - by trolle3000

  I'm using ClamXav on my mac. I've read this, and I am aware of the whole macs-need-no-AV-but-they-do-anyway discussion. I guess that's why I would feel like a real ass if I somehow managed to compromise my system! So ClamXav has been downloaded and ClamXav Sentry set up to start on log-in, but it doesn't really do anything before you tell it to. Specifically, you have to tell it which folders to watch for virusses/vira so I'm wondering, where are good places to look? Currently it's been set up to look the following places: In the home folder: ~/Downloads ~/Library/Caches ~/Library/Contextual Menu Items ~/Library/Cookies ~/Library/Internet Plug-Ins ~/Library/LaunchAgents In my system folder: /Library/Application Support /Library/Caches /Library/Contextual Menu Items /Library/Cookies /Library/Internet Plug-Ins /Library/LaunchAgents /Library/LaunchDaemons /Library/Startupitems Basically, this is 100% conjecture. All (most of) the folders have something to do with internet and things that start up automatically, so I'm guessing that's where vira go. But still, the qustion: Which folders should ClamXav Sentry watch, if any? FYI, I'm not using any mail app's, but please include that in your answer for anyone who might be interested. Cheers!

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• Don't Miss This Week's Webinars!

  - by [email protected]

  Wednesday, April 14th - 11:00 am PT - 12:00 pm PT Oracle User Productivity Kit: Best Practices for Getting the Most out of your Student Information System and ERP. Register now! K-12 organizations cannot afford to risk deploying mission critical applications like student information systems and ERPs without complete confidence they will live up to expectations. Find out how Oracle UPK can ensure success. Wednesday, April 14th - 10:00 am PT - 11:00 am PT Utilizing Oracle UPK for More than Just Training. Register now! HEUG webinar featuring Beth Renstrom, Senior Manager, Oracle UPK Product Management and James Barber, Partner PM with ERP Analysts. Discover how Oracle UPK can be utilized well beyond just training development and delivery. Thursday, April 15th - 10:00 am PT - 11:00 am PT UPK Productive Day One. Register now! Learn how to maximize your applications investment, increase employee productivity, and mitigate risk through all phases of the project lifecycle with Oracle UPK.

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• Ubuntu One Bookmark sync not working.

  - by Rob

  Everything in Ubuntu One sync works great except bookmark sync. I tried the wiki answer that said to run: killall beam.smp beam rm ~/.config/desktop-couch/desktop-couchdb.ini dbus-send --session --dest=org.desktopcouch.CouchDB --print-reply --type=method_call / org.desktopcouch.CouchDB.getPort This is what my terminal came back with: robin@robin-MIDWAY:~$ killall beam.smp beam beam: no process found robin@robin-MIDWAY:~$ rm ~/.config/desktop-couch/desktop-couchdb.ini rm: cannot remove `/home/robin/.config/desktop-couch/desktop-couchdb.ini': No such file or directory robin@robin-MIDWAY:~$ dbus-send --session --dest=org.desktopcouch.CouchDB --print-reply --type=method_call / org.desktopcouch.CouchDB.getPort Error org.freedesktop.DBus.Error.NoReply: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken. robin@robin-MIDWAY:~$ I'm a computer "newbie" so it's possible I'm doing something wrong, are there any tutorials out there on how to use the CouchDB? I have Bindwood installed.

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• Why does Windows 7 always automatically change the input or keyboard language?

  - by B-Ball

  I am wondering why Windows 7 always automatically changes my input or keyboard language. I've a notebook with an integrated QWERTY keyboard English (United States). Traveling, I use that one but, additionally, I've my own as well as a much better keyboard at home which is a QWERTZ keyboard German (Germany). Thus, being at home, I'd like to use my QWERTZ keyboard. Unfortunately, Windows 7 does not play along at this one. Every time, I start up my notebook, it is usually set to English (United States) but that's not the problem. In case, I'd use my notebook QWERTY keyboard English (United States), that's fine. However, if I start up my notebook and I'd like to use my QWERTZ keyboard German (Germany), I usually press ALT + Left Shift in order to switch from English (United States) to German (Germany) and Windows 7 switches the input language but only for the program that is currently open. If my input language is set to German (Germany) and I, e.g., open NotePad, Windows 7 automatically switches my input language to English (United States). This is very annoying since I've to change the input or keyboard language to German (Germany) every time I open up a new program. Why doesn't Windows 7 stay with one input language if I changed it manually by pressing ALT + Left Shift? Why doesn't the manual change of the input or keyboard language apply for the whole Windows 7? Why does it only affect the currently opened program? Since I've two keyboards with two different layouts, I seriously need to have both of the keyboards languages installed. I tried both of the below settings in order to find a solution for my problem. Currently, I am using the first option, two input languages. First option: two input languages: Second option: two keyboard languages:

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• Lenovo ThinkPad T400 and docking station

  - by hari

  Developer in me woke up this morning and asked me to fix this before Christmas. (As his Christmas gift). So, if I power on the laptop after docking it, everything works fine. But if I am working on it standalone and then try to dock it, I cannot get the display. Same way, if I undock it while working, I loose the display. Basically, I need to reboot for any docking/undocking dance to work. Questions: 1) What kind of information should I be looking for to understand the problem? 2) Where to find that information. After this, I can go and try to figure out what is going wrong.

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• That pestky Intel Centrino wireless N + WiMAX 6150 wireless card

  - by newb26

  I'm new to linix and just got Ubuntu up and running on my ASUS laptop last night. Aside from the wireless everything seems to be working. The card is able to recognize networks but cannot make a full connection. After I enter my password it will try to connect before asking for the password again after a few minutes. I know the issue isn't the password because I checked that I had the right one. I've done some poking around trying to find a way to get it work. Linix recognizes the card as well. I found a link to some drivers in a question someone had about a WiMAX 6250 card and am curious if anyone knows if they would also work for the 6150 I have in my machine: https://github.com/ago/wimax-tools If not what can I do?

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• Removing a File Association

  - by Anthony Trudeau

  I found a rather simple way to remove a file association (default program) tonight that I thought others might find useful.  I found it after discovering that Windows 7 doesn't provide a straight-forward way of removing an association.Windows 7 provides a nice interface in the Control Panel for changing associations (Programs > Default Programs > Set Associations), but once you have one you cannot get rid of it.  The Registry is an obvious choice, because that's where the associations are stored.  In fact, the HKEY_CLASSES_ROOT hive has the association, but there is also a key you need to delete somewhere in the HKEY_CURRENT_USER hive.Doing a little poking around, I discovered a command line program called ASSOC that'll do it.  And typing HELP ASSOC confirms that it was what I was looking for.  The solution to my problem turned out to be as simple as typing ASSOC .BIN="" on the command line.

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• Is it OK to learn an algorithm from an open source project, and then implement it in a closed source project?

  - by Chris Barry

  Reference The post that started it all In order to clear up the original question I asked in a provocative manner, I have posed this question. If you learn an algorithm from an open source project, is it OK to use that algorithm in a separate closed sourced project? And if not, does that imply that you cannot use that knowledge ever again? If you can use it, what circumstance could that be? Just to clarify, I am not trying to evade a licence, otherwise I would not have asked the question in the first place. I believe this presents a difficult question and it is interesting to know where the debate can end up.

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• How can I adjust system volume from within XBMC?

  - by d3vid

  While running XBMC, I can adjust the volume of the XBMC application itself. However, this volume is limited by the current system volume. For example, if the system volume is at 80% and XBMC is at 100%, I am effectively at 80% and cannot go higher. Or if the sound is too soft and needs a boost, I would normally increase the system volume beyond 100%. XBMC takes over the whole screen, so the system volume is not accessible. Pressing the Super key brings up the dash and top menu, but clicking on it is difficult and inconsistent, and very quickly XBMC takes over the screen again. How can I adjust the system volume without having to quit XBMC?

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• Slowdowns while using Firefox

  - by aneal

  I have Windows 7 and Natty installed on my computer. There is no problem on Windows 7's side, but whenever I log into Natty, it slows down while using Firefox 4. I tried it in normal mode using Unity and classic mode. However, the result is the same: it slows down e.g. when I scroll, it takes time to get effect, and also when I click other tabs, it takes time to active them. Moreover I cannot type properly, due to the lag. I don't know what the problem is?

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• DNS and WIldcards

  - by Thomas Chapman

  Whenever I attempt to make a record for *.schneiderdonnelly.com.au and CNAME it, I get two errors: You can't mix CNAME/MX records together using the same hostname. Domain root's cannot be CNAME's, however you can web-forward this record to www.schneiderdonnelly.com.au instead for the same effect. I've read it's possible so why can't I make it work? I donated $5 to be a premium member and I've been trying to make it work for yonks. http://i.stack.imgur.com/D9Ui5.jpg This is how I want it to appear. The last record. I am prepared to swap DNS providers as long as they're free.

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• Mysql ndb cluster - node restart.

  - by Arafat

  Hi guys! I just setup a mysql cluster on a fairly decent baby (IBM x3650 M3) with 24GB memory, xeon 6core, SAS 6Gbps HDD. Running Debian Lenny 5. 64bits. Ndb version is 7.1.9a. Our database size on MyISAM is around 3.2 GB. Ndb_size estimation is 58GB for ndbengine. A little info about my database is as follows. 150 common tables for global purpose. 130 tables for each clients. So it goes like this, 130 x 115(clients) = 14950 tables. Is it normal or usual to have 14000 tables on one database? The reasons why we did this was, Easy maintenance and per client based customization. Now, the problem is, ndb cluster can only support, 20320 tables. But it can support 5,000,000,000 rows in one table if I'm not wrong. My real head ache is my cluster data node takes less than two minutes to startup with out any data. But as soon as convert my tables into ndb, that too only 2000 tables, data node takes at least 30 to 40 mins to start up. Is it normal? If I convertt all my tables into ndb, will it take even longer? Or let's say if consolidate my 14000 table's data into one, which is 130 tables, will it help? Or is there anything idiotically wrong which I'm doing? I'll attach my config.ini file soon. here's the simple overview of my config Datamemory = 14G Indexmemory = 3GB Maxnooftable = 14000 Maxnoofattributes = 78000 I'm just testing these values with 2000 tables first. Please advise, how to increase the start up speed. Please point out where I'm going wrong. Thanks in advance guys!

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• vb.net and mysql connectivity [closed]

  - by kalpana

  I have used adodb using odbc database connectivity for connecting vb.net to mysql. I have fetched table values into recordset. I want to fetch only one column values (for example, table name-login, column name-password and values in password column are "manage","sales","general"). I want to fetch these values in text boxes. I have written code but it's not working. Dim conn As New ADODB.Connection Dim res As New ADODB.Recordset conn.Open("test", "root", "root") res = conn.Execute("select password from login") textbox1.text=res(0).value textbox2.text=res(1).value textbox3.text=res(2).value I am getting data in textbox1 but other data is not getting inserted into textbox2 and textbox3..I am getting error i.e (1) Item cannot be found in the collection corresponding to the requested name or ordinal.

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• Debian apache2 restart fault after some updates

  - by Ripeed

  can anyone give me an advice with this please: I run update on my debian server by Webmin. After updating some apache2 and etc. It shows update fail. After that I cant start apache2. I must run netstat -ltnp | grep ':80' Then kill pid kill -9 1047 and now i can start apache2 When I started it first time after update some websites on fastCGI wont work I must change them in ISPconfig3 to mod-PHP and now works NOW - I cant restart apache without kill pid. In log of ISP I see Unable to open logs (98)Address already in use: make_sock: could not bind to address [::]:80 (98)Address already in use: make_sock: could not bind to address 0.0.0.0:80 no listening sockets available, shutting down In log of some website I see [emerg] (13)Permission denied: mod_fcgid: can´t lock process table in pid 19264 Do you thing it will be solution update everithing by: apt-get update and apt-get upgrade to complete all updates? I have little scare if I do that then next errors will occur. If I look at apache log i see error: Debian Python version mismatch, expected '2.6.5+', found '2.6.6' But that was there before that problem before. Thanks A LOT for help.

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• Shared Data Source name error underscore characters added

  - by mick

  The name of our shared data source in RS (report server) is "AF1 Live Database" (no underscore characters - just spaces between words) and is the same in report builder in VS. However, the following error pops up when the RDL of this report is uploaded onto our company site and run. (error we are receiving...) The report server cannot process the report or shared dataset. The shared data source 'AF1_Live_Database' for the report server or SharePoint site is not valid. Browse to the server or site and select a shared data source. (rsInvalidDataSourceReference) We have no idea why the error reports the shared data source as 'AF1_Live_Database' with underscore characters? As this appears to be the problem that keeps the report from running we are seeking your help, thanks.

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• Alpha blend 3D png texture in XNA

  - by ProgrammerAtWork

  I'm trying to draw a partly transparent texture a plane, but the problem is that it's incorrectly displaying what is behind that texture. Pseudo code: vertices1 basiceffect1 // The vertices of vertices1 are located BEHIND vertices2 vertices2 basiceffect2 // The vertices of vertices2 are located IN FRONT vertices1 GraphicsDevice.Clear(Blue); PrimitiveBatch.Begin(); //if I draw like this: PrimitiveBatch.Draw(vertices1, trianglestrip, basiceffect1) PrimitiveBatch.Draw(vertices2, trianglestrip, basiceffect2) //Everything gets draw correctly, I can see the texture of vertices2 trough //the transparent parts of vertices1 //but if I draw like this: PrimitiveBatch.Draw(vertices2, trianglestrip, basiceffect2) PrimitiveBatch.Draw(vertices1, trianglestrip, basiceffect1) //I cannot see the texture of vertices1 in behind the texture of vertices2 //Instead, the texture vertices2 gets drawn, and the transparent parts are blue //The clear color PrimitiveBatch.Draw(vertice PrimitiveBatch.End(); My question is, Why does the order in which I call draw matter?

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