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• check what process was causing the problem of high cpu load

  - by linuxk

  I'm running nginx wordpress server in KVM using 12.04 server x86. It was running very well about 4 month until 2 hours ago. I found that my website is down and no ping response. Virt-manager logged high cpu load(plz see the picture below) before unexpected shut down. I want to know what process caused unexpected shutdown. The following log files make me think my server is attacked. Any suggestions and help would be appreciated. kern.log and syslog showed me same output. Nov 11 03:54:11 www kernel: [1344541.156239] [UFW BLOCK] IN=eth0 OUT= MAC= SRC=0.0.0.0 DST=224.0. 0.1 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 Nov 11 03:54:11 www kernel: [1344541.156315] [UFW BLOCK] IN=eth0 OUT= MAC= SRC=0101:080a:2334:c90 0:0100:0000:0000:0000 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=72 TC=0 HOPLIMIT=1 FLOWLBL=0 PROTO=ICMPv6 TYPE=130 CODE=0 /nginx/access.log showed me 119.235.237.17 - - [11/Nov/2012:03:45:29 +0900] "GET /blog HTTP/1.1" 200 30493 "-" "Yeti/1.0 (NHN Corp.; http://help.naver.com/robots/)" my-server-ip - - [11/Nov/2012:11:05:30 +0900] "POST /wp-cron.php?doing_wp_cron=13 HTTP/1.0" 499 0 "-" "WordPress/3.4.2; http://mywebsite.com" Server turned on in here. 119.235.237.16 - - [11/Nov/2012:11:05:30 +0900] "GET /blog HTTP/1.1" 200 32935 "-" "Yeti/1.0 (NHN Corp.; http://help.naver.com/robots/)"

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• How To Use AutoFill on a Google Docs Spreadsheet [Quick Tips]

  - by The Geek

  Have you ever wanted to fill an entire row or column with a series of values? If you’re an Excel user, you can do the same thing in Google Docs. If you haven’t used either, here’s the quick way to do it. Just type in a couple of numbers in sequence… 1 2 3 works pretty well. You could also put them across a row instead of down a column. Then move your mouse over the dot in the corner until the pointer changes, then just drag it downward (or if you are filling a row instead, you can drag it to the right). Let go of the mouse, and your data will be automatically filled in. You could also make it skip by 1 instead, like 2 4 6 8, etc… It all works the same way. Sadly there’s no really advanced options like Excel has, but for most uses, this is good enough. Also, we’re aware this is a very simple tip for most of you, but we’re trying to help the beginners out as well! Similar Articles Productive Geek Tips Integrate Google Docs with Outlook the Easy WayHow To Export Documents from Google Docs to Your ComputerHow To Monitor Sites Without an RSS Feed Using FirefoxGeek Software: Use DeliCount to Get Site-wide del.icio.us Bookmark CountsMake Excel 2007 Read Spreadsheets To You TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips DVDFab 6 Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 Combine MP3 Files Easily QuicklyCode Provides Cheatsheets & Other Programming Stuff Download Free MP3s from Amazon Awe inspiring, inter-galactic theme (Win 7) Case Study – How to Optimize Popular Wordpress Sites Restore Hidden Updates in Windows 7 & Vista

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• Could not log-in properly but shows no error in joomla

  - by saeha

  This is what I did, I added variables in \libraries\joomla\database\table\user.php: var $img_content= null; //contains the blob type data var $img_name = null; var $img_type = null; then I added this code in \components\com_user\controller.php: $file = JRequest::getVar( 'pic', '', 'files', 'array' ); if(isset($file['name'])) { jimport('joomla.filesystem.file'); $fileName = $file['name']; $tmpName = $file['tmp_name']; $fileSize = $file['size']; $fileType = $file['type']; $fp = fopen($tmpName, 'r'); $content = fread($fp, filesize($tmpName)); //$content = addslashes($content); fclose($fp); $user->set('img_name', $fileName); $user->set('img_type', $fileType); $user->set('img_content', $content); } that works fine, but I found this problem in logging in with the new user with an uploaded photo, other user with an empty img_content field could login properly. What happens is when I log-in using the user with uploaded photo, it's not redirecting properly it just return to log-in, but when i log-in through backend using other user which is super admin, i could see that user which appears as logged in. I started saving the images in the database because I am having problem with the directory when I have uploaded the site. I think the log-in was affected by the blob type data in the database. Could that be the problem? What could be the solution? -saeha

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• How to update MDS ?

  - by harsh.singla

  The other question that comes to mind is how to update and existing file or creates a new file in MDS. It's really simple. We already have setup done for this in Foundation Pack. Here are the steps you need to do to update or create a new file in MDS 1) Browse to AIA_HOME/AIAMetaData 2) Place your file(it may be new file or modified existing file) at the desired location. The same hierarchy will appear in MDS starting from AIAMetaData. 3) Edit UpdateMetaDataDeploymentPlan.xml in aia_instances/AIA_INSTANCE_NAME/config. 4) In the tag, mention the files which you have modified or added new. You can add a file or directory as required. 5) Browse to AIA_HOME/Infrastructure/Install/scripts 6) Run ant -f UpdateMetaData.xml Here is the same UpdateMetaData Deployment Plan. UpdateMetaDataDP.xml There are some things that you may want to take care while updating MDS 1) The path in "fileset" tag can be anywhere on the disk. 2) The path in "include" tag has to be relative to what is given in "fileset" tag 3) The path is MDS will appear what you have given in "include" tag. The path in this tag will automatically appended to /apps/AIAMetaData/.

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• PHP file_put_contents File Locking

  - by hozza

  The Senario: You have a file with a string (average sentence worth) on each line. For arguments sake lets say this file is 1Mb in size (thousands of lines). You have a script that reads the file, changes some of the strings within the document (not just appending but also removing and modifying some lines) and then overwrites all the data with the new data. The Questions: Does 'the server' PHP, OS or httpd etc. already have systems in place to stop issues like this (reading/writing half way through a write)? i. If it does, please explain how it works and give examples or links to relevant documentation. ii. If not, are there things I can enable or set-up, such as locking a file until a write is completed and making all other reads and/or writes fail until the previous script has finished writing? My Assumptions and Other Information: The server in question is running PHP and Apache or Lighttpd. If the script is called by one user and is halfway through writing to the file and another user reads the file at that exact moment. The user who reads it will not get the full document, as it hasn't been written yet. (If this assumption is wrong please correct me) I'm only concerned with PHP writing and reading to a text file, and in particular, the functions "fopen"/"fwrite" and mainly "file_put_contents". I have looked at the "file_put_contents" documentation but have not found the level of detail or a good explanation of what the "LOCK_EX" flag is or does. The senario is an EXAMPLE of a worst case senario where I would assume these issues are more likely to occur, due to the large size of the file and the way the data is edited. I want to learn more about these issues and don't want or need answers or comments such as "use mysql" or "why are you doing that" because I'm not doing that, I just want to learn about file read/writing with PHP and don't seem to be looking in the right places/documentation and yes I understand PHP is not the perfect language for working with files in this way...

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• Tweaking log4net Settings Programmatically

  - by PSteele

  A few months ago, I had to dynamically add a log4net appender at runtime.  Now I find myself in another log4net situation.  I need to modify the configuration of my appenders at runtime. My client requires all files generated by our applications to be saved to a specific location.  This location is determined at runtime.  Therefore, I want my FileAppenders to log their data to this specific location – but I won't know the location until runtime so I can't add it to the XML configuration file I'm using. No problem.  Bing is my new friend and returned a couple of hits.  I made a few tweaks to their LINQ queries and created a generic extension method for ILoggerRepository (just a hunch that I might want this functionality somewhere else in the future – sorry YAGNI fans): public static void ModifyAppenders<T>(this ILoggerRepository repository, Action<T> modify) where T:log4net.Appender.AppenderSkeleton { var appenders = from appender in log4net.LogManager.GetRepository().GetAppenders() where appender is T select appender as T;   foreach (var appender in appenders) { modify(appender); appender.ActivateOptions(); } } Now I can easily add the proper directory prefix to all of my FileAppenders at runtime: log4net.LogManager.GetRepository().ModifyAppenders<FileAppender>(a => { a.File = Path.Combine(settings.ConfigDirectory, Path.GetFileName(a.File)); }); Thanks beefycode and Wil Peck. Technorati Tags: .NET,log4net,LINQ

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• Ask the Readers: What Tools Do You Use to Score Great Deals Online?

  - by Jason Fitzpatrick

  The internet has made scoring awesome deals a cinch—but only if you have the right tools and know where to look. This week we want to hear about your favorite tools for scoring the deepest discounts during your online shopping adventures. What we’re most interested in is the tools you use: browser plugins, bookmarklets, and other tools that help you stay on top of price drops and other deal-related information. So let’s hear about it in the comments! What tools do you use to score great deals online? We’ll read all your comments, gather quotes, and share the collective wisdom of the How-To Geek crowd in a follow-up What You Said post on Friday. Latest Features How-To Geek ETC Macs Don’t Make You Creative! So Why Do Artists Really Love Apple? MacX DVD Ripper Pro is Free for How-To Geek Readers (Time Limited!) HTG Explains: What’s a Solid State Drive and What Do I Need to Know? How to Get Amazing Color from Photos in Photoshop, GIMP, and Paint.NET Learn To Adjust Contrast Like a Pro in Photoshop, GIMP, and Paint.NET Have You Ever Wondered How Your Operating System Got Its Name? Etch a Circuit Board using a Simple Homemade Mixture Sync Blocker Stops iTunes from Automatically Syncing The Journey to the Mystical Forest [Wallpaper] Trace Your Browser’s Roots on the Browser Family Tree [Infographic] Save Files Directly from Your Browser to the Cloud in Chrome and Iron The Steve Jobs Chronicles – Charlie and the Apple Factory [Video]

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• How do I install a Wimax usb driver?

  - by kakaz

  I am using wimax usb modem in Ubuntu 9.04 properly. I am familiar with Ubuntu 10.04 and try to install the same deb file to use my wimax USB modem, but it could not install and give me the following error message: $ sudo dpkg -i green-packet-wimax-usb_i386.iso.deb (Reading database ... 206628 files and directories currently installed.) Preparing to replace green-packet-wimax-usb 1.12 (using green-packet-wimax- usb_i386.iso.deb) ... /var/lib/dpkg/info/green-packet-wimax-usb.prerm: 45: /etc/init.d/wimaxd: not found Removing any system startup links for /etc/init.d/wimaxd ... FATAL: Module mt7118_usb_os not found. Unpacking replacement green-packet-wimax-usb ... Setting up green-packet-wimax-usb (1.12) ... FATAL: Error inserting mt7118_usb_glue (/lib/modules/2.6.32-28-generic/kernel/drivers/net/mt7118_usb_glue.ko): Invalid module format dpkg: error processing green-packet-wimax-usb (--install): subprocess installed post-installation script returned error exit status 1 Processing triggers for ureadahead ... Processing triggers for desktop-file-utils ... Processing triggers for python-gmenu ... Rebuilding /usr/share/applications/desktop.en_US.utf8.cache... Processing triggers for libc-bin ... ldconfig deferred processing now taking place Processing triggers for python-support ... Errors were encountered while processing: The error (Line 9) give me some clue that the mt7118_usb_glue.ko kernel object can't insert it. So, I think this may be due to it's kernel dependencies. Can anybody tell me how I can install this kernel object to my new Ubuntu 10.04 kernel?

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• How do you cope with change in open source frameworks that you use for your projects?

  - by Amy

  It may be a personal quirk of mine, but I like keeping code in living projects up to date - including the libraries/frameworks that they use. Part of it is that I believe a web app is more secure if it is fully patched and up to date. Part of it is just a touch of obsessive compulsiveness on my part. Over the past seven months, we have done a major rewrite of our software. We dropped the Xaraya framework, which was slow and essentially dead as a product, and converted to Cake PHP. (We chose Cake because it gave us the chance to do a very rapid rewrite of our software, and enough of a performance boost over Xaraya to make it worth our while.) We implemented unit testing with SimpleTest, and followed all the file and database naming conventions, etc. Cake is now being updated to 2.0. And, there doesn't seem to be a viable migration path for an upgrade. The naming conventions for files have radically changed, and they dropped SimpleTest in favor of PHPUnit. This is pretty much going to force us to stay on the 1.3 branch because, unless there is some sort of conversion tool, it's not going to be possible to update Cake and then gradually improve our legacy code to reap the benefits of the new Cake framework. So, as usual, we are going to end up with an old framework in our Subversion repository and just patch it ourselves as needed. And this is what gets me every time. So many open source products don't make it easy enough to keep projects based on them up to date. When the devs start playing with a new shiny toy, a few critical patches will be done to older branches, but most of their focus is going to be on the new code base. How do you deal with radical changes in the open source projects that you use? And, if you are developing an open source product, do you keep upgrade paths in mind when you develop new versions?

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• Why is Samba Access from Windows So Slow?

  - by swalker2001

  I have set up a file server using Ubuntu 12.04 Server. The purpose is to serve several network drives to Windows users that have heretofore been served by numerous NAS drives. I have Samba set up with one share defined so far. I can connect to it fine from my test Windows 7 and Windows XP machines. When I do a directory listing on the share from Windows, it can take up to two minutes to get all the files listed--would have taken about 1.5 seconds when I was using the Buffalo NAS. Sometimes it times out with no response at all. I have used the default smb.conf and simply added the following for the share I have set up so far: [engineering] comment = Ubuntu File Server Share path = /networkdriveshares/engineering browsable = yes guest ok = yes read only = no create mask = 0755 I have tried changing the workgroup setting to the Active Domain name our Windows computer use but didn't notice any difference. The only other change I made to the default smb.conf was adding in the recommended socket settings: SO_RCVBUF=8192 SO_SNDBUF=8192 socket options = TCP_NODELAY Lots of information about slow Samba shares online but I have tried all of the solutions I have found and none have made a lick of difference. If there is no solution, is there a better way to set up a file server to be used by Windows clients?

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• OOP oriented PHP app source code samples and advice

  - by abel

  The day I have been dreading has arrived. I never felt OOP or good software design was important(I knew they were important, but I thought I could manage without them.). However having read otherwise almost everywhere on the interwebs, I started dreading the day when my client would ask me for new features in an existing app. The day has come and the pain is unbearable! I have never coded my PHP websites "properly"(PHP is my primary language and the bulk of my work. I am learning Python (using web2py)) I take care that the website doesn't fall apart in a daily use scenario. I code pages like I was creating a list of static html files with bits of "magic code" in each of them(this bugs me a lot). How do I make the whole app more or less a single object? For eg. How do I design the object model for an invoicing app? I use a lot of functions for doing any particular thing in the same fashion throughout the app(for eg. validation, generating ids, calculating taxes etc.). I know the basics of OOP in general. Can anyone point me to source code samples of functional apps written in php? Or can someone provide pointers so I can recode my existing apps in a more modular way.

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• links for 2011-02-25

  - by Bob Rhubart

  The (non) Importance of Language (Enterprise Architecture at Oracle) (tags: ping.fm entarch) ArchBeat (tags: ping.fm) Andrejus Baranovskis's Blog: Beware of Hackers - Keep ADF Task Flows inside WEB-INF Oracle ACE Director Andrejus Baranovskis with a word of caution. (tags: oracle oracleace otn adf) Introduction to WebCenter Personalization: The Conductor; (WebCenter Personalization) Steve Pepper offers an introduction to the Conductor component in Oracle WebCenter Personalization. (tags: oracle otn webcenter enterprise2.0) Batch Aggregation of files in BPEL process instances based on correlation AMIS Technology blog Oracle ACE Director Lucas Jellema shares his solution to a colleague's challenge. (tags: oracle otn oracleace soa bpel) Bradley D. Brown: Watch Out Larry...Here they Come! "Every Fortune 500 company that I've talked to in the last few months is trying to figure out their mobile strategy. Organizations are getting the push from the top down - i.e. executives are asking for data from their mobile devices." - Oracle ACE Director Brad Brown (tags: oracle otn ipad mobilecomputing entarch oracleace) Oracle Technology Network Developer Day - You are the future of Java. Boston, March 3. Designed for the enterprise professional, this event will teach you about the latest developments in the Java Virtual Machine, Java EE, Java SE, Java on the Desktop, and Embedded Java. Whether you're a developer or architect, or managing a team of them, this is an event you can't miss. (tags: oracle otn java)

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• How to Get Amazing Color from Photos in Photoshop, GIMP, and Paint.NET

  - by Eric Z Goodnight

  Color in digital photos doesn’t always end up the way you want, or even the way you see it. Thankfully, Photoshop, GIMP and Paint.NET all have excellent color correction tools, which you’ll find can solve your various color woes. It can be a pain to take a photograph and find that the color is oddly affected by the environment, lighting, or perhaps the choices you made when you shot the image in the first place. All of these problems are changeable, and in fact, you’ll be surprised how easy they can be to adjust. Read on to see what tools can help adjust your image in each of these three major graphics programs. Latest Features How-To Geek ETC How to Get Amazing Color from Photos in Photoshop, GIMP, and Paint.NET Learn To Adjust Contrast Like a Pro in Photoshop, GIMP, and Paint.NET Have You Ever Wondered How Your Operating System Got Its Name? Should You Delete Windows 7 Service Pack Backup Files to Save Space? What Can Super Mario Teach Us About Graphics Technology? Windows 7 Service Pack 1 is Released: But Should You Install It? Get the MakeUseOf eBook Guide to Hacker Proofing Your PC Sync Your Windows Computer with Your Ubuntu One Account [Desktop Client] Awesome 10 Meter Curved Touchscreen at the University of Groningen [Video] TV Antenna Helper Makes HDTV Antenna Calibration a Snap Turn a Green Laser into a Microscope Projector [Science] The Open Road Awaits [Wallpaper]

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• Unable to mount external hard drive - Damaged file system and MFT

  - by Khalifa Abbas Lame

  I get the following error when i try to mount my external hard drive. UNABLE TO MOUNT Error mounting /dev/sdc1 at /media/khalibloo/Khalibloo2: Command-line `mount -t "ntfs" -o "uhelper=udisks2,nodev,nosuid,uid=1000,gid=1000,dmask=0077,fmask=0177" "/dev/sdc1" "/media/khalibloo/Khalibloo2"' exited with non-zero exit status 13: ntfs_attr_pread_i: ntfs_pread failed: Input/output error Failed to read of MFT, mft=6 count=1 br=-1: Input/output error Failed to open inode FILE_Bitmap: Input/output error Failed to mount '/dev/sdc1': Input/output error NTFS is either inconsistent, or there is a hardware fault, or it's a SoftRAID/FakeRAID hardware. In the first case run chkdsk /f on Windows then reboot into Windows twice. The usage of the /f parameter is very important! If the device is a SoftRAID/FakeRAID then first activate it and mount a different device under the /dev/mapper/ directory, (e.g. /dev/mapper/nvidia_eahaabcc1). Please see the 'dmraid' documentation for more details. It doesn't mount on windows either: "I/O Device error" it's an ntfs hard drive with a single partition Of course, i tried chkdsk /f. it reported several file segments as unreadable, but didn't say whether it fixed them or not (apparently not). also tried with the /b flag. ntfsfix reported the volume as corrupt. TestDisk was able to fix a small error with the partition table by adding the "80" flag for the active (only) partition. TestDisk also confirmed that the boot sector was fine and it matched the backup. However, when attempting to repair the MFT, it couldn't read the MFT. It also couldn't list the files on the hard drive. It says file system may be damaged. Active@ also shows that MFT is missing or corrupt. So how do i fix the file system? or the MFT?

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• Cron: job starts but doesn't complete

  - by Guandalino

  I have a problem with a cron job which starts but doesn't complete. Running the command manually works fine. I already read the page about cron issues and solutions here on AskUbuntu, tried the proposed solutions but didn't find an answer working in my case. I'm using Ubuntu 12.04. $ crontab -e SHELL=/bin/bash # otherwise it would be /bin/sh 59 16 * * * /bin/duply calendar backup > /tmp/duply.log Btw, the cron file ends with an empty line, as someone pointed out. Once the job has "finished"...: $ cat /tmp/duply.log Start duply v1.5.7, time is 2012-06-22 16:59:01. Instead, running manually the script it works correctly and gives this output: Start duply v1.5.7, time is 2012-06-22 17:06:39. [cut] ... here is a long output generated by duply. ... and yes, files have been backed up. [cut] --- Finished state OK at 17:06:42.581 - Runtime 00:00:03.170 --- I also tried to restart the cron daemon (sudo service cron restart) but nothing changed. Do you have any suggestion to fix the issue?

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• A Generic RIDC Test Program

  - by Kevin Smith

  Many times I have found it useful to use a java program that communicates with WebCenter Content (WCC) using RIDC for testing. I might not have access to the web GUI or need to test a service running as a specific user. In the past I had created a number of "one off" programs that submitted specific services, e.g GET_SEARCH_RESULTS, DOCINFO, etc. Recently I decided to create a generic RIDC test program that could submit any service with the desired parameters based on a configuration file. The programs gets the following information from the configuration file: WCC connection information (host, port) User to use to run service Service to run Any parameters for the service The program will make a connection to the WCC server, send the service request, and print the results of the service call using the getResponseAsString() method. Here is a sample configuration file: ridc.host=localhostridc.port=4444ridc.user=sysadminridc.idcservice=GET_SEARCH_RESULTSidcservice.QueryText=dDocType <matches> `Document`idcservice.SortField=dDocNameidcservice.SortDesc=ASC There is a readme file included in the zip with instructions for how to configure and run the program. The program takes one command line argument, the configuration file name. The configuration file name is optional and defaults to config.properties. If you have any suggestions for improvements let me know. Right now it only submits a single service call each time you run it. One enhancement I have already thought about would be to allow you to specify multiple services to tun in the configuration file. You can do that with the current program by having multiple configuration files and running the program multiple times, each with a different configuration file. You can download the program here.

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• Android&ndash;Finding your SDK debug certificate MD5 fingerprint using Keytool

  - by Bill Osuch

  I recently upgraded to a new development machine, which means the certificate used to sign my applications during debug changed. Under most circumstances you’ll never notice a difference, but if you’re developing apps using Google’s Maps API you’ll find that your old API key no longer works with the new certificate fingerprint. Google's instructions walk you through retrieving the MD5 fingerprint of your SDK debug certificate - the certificate that you’re probably signing your apps with before publishing, but it doesn't talk much about the Keytool command. The thing to remember is that Keytool is part of Java, not the Android SDK, so you'll never find it searching through your Android and Eclipse directories. Mine is located in C:\Program Files\Java\jdk1.7.0_02\bin so you should find yours somewhere similar. From a command prompt, navigate to this directory and type: keytool -v -list -keystore "C:/Documents and Settings/<user name>/.android/debug.keystore" That’s assuming the path to your debug certificate is in the typical location. If this doesn’t work, you can find out where it’s located in Eclipse by clicking Window –> Preferences –> Android –> Build. There's no need to use the additional commands shown on Google's page. You'll be prompted for a password, just hit enter. The last line shown, Certificate fingerprint, is the key you'll give Google to generate your new Maps API key. Technorati Tags: Android Mapping

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• Cross-Platform Migration using Heterogeneous Data Guard

  - by Roy F. Swonger

  Most people think of Data Guard as a disaster recovery solution, and it certainly excels in that role. However, did you know that you can also use Data Guard for platform migration under some conditions? While you would normally have your primary and standby Data Guard systems running on the same OS and hardware platform, there are some heterogeneous combinations of primary and stanby system that are supported by Data Guard Physical Standby. One example of heterogenous Data Guard support is the ability to go between Linux and Windows on many processor architectures. Another is the support for environments that are running HP-UX on both PA-RIsC and Itanium hardware. Brand new in 11.2.0.2 is the ability to have both SPARC Solaris and IBM AIX on Power Systems in the same Data Guard environment. See My Oracle Support note 413484.1 for all the details about supported platform combinations. So, why mention this in an upgrade blog? Simple: much of the time required for a platform migration is usually spent copying files from one system to another. If you are moving between systems that are supported by heterogenous Data Guard, then you can reduce that migration downtime to a matter of minutes. This can be a big win when downtime is at a premium (and isn't downtime always at a premium? In addition, you get the benefit of being able to keep the old and new environments synchronized until you are sure the migration is successful! A great case study of using Data Guard for a technology refresh is located on this OTN page. The case study showing CERN's methodology isn't highlighted as a link on the overview page, but it is clickable. As always, make sure you are fully versed on the details and restrictions by reading the available documentation and MOS notes. Happy migrating!

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• How do I start Ubuntu without X server?

  - by Kaare Mikkelsen

  So, I'm trying to install the official nVidia drivers for my fancy graphics card, and they advice disabling the X server before installing, as well as making sure that I can boot without the X server, so as not to wreck anything. However, I seem to be doing something wrong. As I understand it, this should be as simple as changing the runlevel from 2 to 1? (I am aware that all this may simply be me not understanding runlevels) If that is correct, a quick test should be simply typing "sudo init 1" or "sudo telinit 1" in a terminal? Doing that makes the system attempt to shutdown, only it stops at the purple screen with the ubuntu logo and 5 white dots underneath. I haven't observed it get anywhere from there, I always end up holding down the power button. "sudo telinit 3" has not visible effect. Alternatively, I should be able to get there using the recovery mode, activated through the grub menu? I have very little success with that. After picking recovery mode, I am faced with a set of options about how to proceed. Both choosing the one with "network enabled" and "text only", I get a dialog explaining that this will mount my / file system in read/write mode, and whether this is what I want. I choose yes, and it seems to report that my drive is fine (there's a single line of text detailing the state of the partition). And then it stops. I haven't tried letting it sit for more than a few minutes, but presumably this process should be comparable in duration to a regular boot? I am not particularly fond of messing with any .conf-files until I am certain that I can handle things with training wheels on. So, I guess there are two questions: the one in the title, and "how do I start a text-only session without changing defaults?" Thanks in advance :)

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• ArchBeat Link-o-Rama Top 20 for June 17-23, 2012

  - by Bob Rhubart

  The most popular item shared via my social networks for the week of June 17-23, 2012. Simple Made Easy | Rich Hickey InfoQ: Current Trends in Enterprise Mobility Cloud Bursting between AWS and Rackspace | High Scalability A Distributed Access Control Architecture for Cloud Computing Congrats to @MNEMONIC01 on his new book: Oracle WebLogic Server 12c: First Look BI Architecture Master Class for Partners - Oracle Architecture Unplugged Guide to integration architecture | Stephanie Mann Oracle Data Integrator 11g - Faster Files | David Allan Recap: EMEA User Group Leaders Meeting Latvia May 2012 Starting a cluster | Mark Nelson SOA, Cloud & Service Technology Symposium 2012 London - Special Oracle Discount Enterprise 2.0 Conference: Building Social Business | Oracle WebCenter Blog FY13 Oracle PartnerNetworkr Kickoff - Tues June 26, 2012 | @oraclepartners Why should you choose Oracle WebLogic 12c instead of JBoss EAP 6? | Ricardo Ferreira Call for Nominations: Oracle Fusion Middleware Innovation Awards 2012 - Win a free pass to #OOW12 Hibernate4 and Coherence | Rene van Wijk Eclipse and Oracle Fusion Development - Free Virtual Event, July 10th Why building SaaS well means giving up your servers | GigaOM Personas - what, why & how | Mascha van Oosterhout Oracle Public Cloud Architecture | Tyler Jewell Thought for the Day "There is only one thing more painful than learning from experience and that is not learning from experience." — Archibald McLeish (May 7, 1892 – April 20, 1982) Source: SoftwareQuotes.com

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• forcing upgrade or how to upgrade packages after update failed

  - by Orosjopie

  How do I continue upgrade or fix upgrade as upgrading in 13.04 to 13.10 failed. I'm currently running terminal in restore mode. I get the error unmet dependencies, but tried to install apt-get -f install, but get this error: unable to fetch some archives. using apt-get update also brings errors for example: failed to fetch http: archive.canonical.com/ubuntu/dists/quantal/release.gpg Could not resolve 'archive.canonical.com. Is it my internet connection? Its currently connected via a network cable and internet is on other computers. If internet on my ubuntu 13.10, how do I switch it on? or how can fix my upgrade problem that I can boot ubuntu normal, backup, then format and reload ubuntu 13.10 properly? I posted this problem that has also linked to this problem I mentioned: upgrading to ubuntu 13.10 failed/crashed. I did manager to install/upgrade some of the files and got ubuntu 13.10 to reboot, but not 100%, as it is slow and the unity desktop is not showing 100%. in trying some of the commands online, I get the error that the activity manager is not installed, when trying to install it, it conflicts with activity-log-manager-common. Please assist.

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• How to spread XML Sitemaps over several webservers behind AWS loadbalancer?

  - by Jurik

  We have a web portal with almost a million products and way more other urls. I wrote a script that checks database. If there is a new url needed or an old one update, this script will update/create the XML Sitemaps. But we have several servers behind the load balancer at our rented AWS space. Further this script checks database for each url if there was an update so that it updates the appropriate xml file too. My question is how to spread those XML Sitemaps over all webservers behind this AWS load balancer? Our approaches/ideas: we could just generate them on one server with a cron job and copy them to the other servers, but this could be difficult because of automatic raising numbers of servers and so on. we put them on our S3 - but this one is not avaible thru our domain, so I guess google will have a problem with it I let my script run on every webserver but change it in a way that it will generate each time all xml files if they do not exist. But then I would have conflicts with updated URLs in my database, where I saved timestamp of last changed value of every url Is there another - better - solution that I do not know? Are there any special services by amazon for such cases?

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• No GUI boot; startx error, I suspect no filesystem corruption.

  - by Dharmaj Soni

  Till yesterday, my Ubuntu 9.10 was working fine. I had watched a movie using vlc. I had also charged my ipod using the laptop. Today, when I started it, I automatically booted into command line. There seems to be no filesystem corruption etc as I can view/open (text) files. Before the CLI appeared, the screen blinked with a cursor, then the white Ubuntu logo flashed, and then I got the CLI login prompt. After logging in, if I try startx, to start gnome, I get the following error after a few seconds: giving up xinit: No such file or directory (errno 2): unable to connect to X server xinit: No such process (errno 3): Server error* The same error comes up, even if I use sudo, or if I change my directory to '/' before using startx, and also when, from the grub, using the recovery mode option to load into CLI, and then trying startx. On trying command 'xinit', I get "Server error" Also, on trying GDM, I get 2 errors. I cannot connect to the internet in this state. Thanks for any help. I am using Dell Inspiron 1440, no special graphics card.

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• Why maven so slow compared to automake?

  - by ???'Lenik

  I have a Maven project consists of around 100 modules. I have reason to decompose the project to so many modules, and I don't think I should merge them in order to speed up the build process. I have read a lot of projects by other people, e.g., the Maven project itself, and Apache Archiva, and Hudson project, they all consists of a lot of modules, nearly 100 maybe, more or less. The problem is, to build them all need so much time, 3 hours for the first time build (this is acceptable because a lot of artifacts to download), and 15 minutes for the second build (this is not acceptable). For automake, things are similarly, the first time you need to configure the project, to prepare the magical config.h file, it's far more complex then what maven does. But it's still fast, maybe 10 seconds on my Debian box. After then, make install requires maybe 10 minutes for the first time build. However, when everything get prepared, the .o object files are generated, they don't have to be rebuild at all for the second time build. (In Maven, everything rebuild at everytime.) I'm very wondering, how guys working for Maven projects can bare this long time for each build, I'm just can't sit down calmly during each time Maven build, it took too long time, really.

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• How do I draw a point sprite using OpenGL ES on Android?

  - by nbolton

  Edit: I'm using the GL enum, which is incorrect since it's not part of OpenGL ES (see my answer). I should have used GL10, GL11 or GL20 instead. Here's a few snippets of what I have so far... void create() { renderer = new ImmediateModeRenderer(); tiles = Gdx.graphics.newTexture( Gdx.files.getFileHandle("res/tiles2.png", FileType.Internal), TextureFilter.MipMap, TextureFilter.Linear, TextureWrap.ClampToEdge, TextureWrap.ClampToEdge); } void render() { Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT); Gdx.gl.glClearColor(0.6f, 0.7f, 0.9f, 1); } void renderSprite() { int handle = tiles.getTextureObjectHandle(); Gdx.gl.glBindTexture(GL.GL_TEXTURE_2D, handle); Gdx.gl.glEnable(GL.GL_POINT_SPRITE); Gdx.gl11.glTexEnvi(GL.GL_POINT_SPRITE, GL.GL_COORD_REPLACE, GL.GL_TRUE); renderer.begin(GL.GL_POINTS); renderer.vertex(pos.x, pos.y, pos.z); renderer.end(); } create() is called once when the program starts, and renderSprites() is called for each sprite (so, pos is unique to each sprite) where the sprites are arranged in a sort-of 3D cube. Unfortunately though, this just renders a few white dots... I suppose that the texture isn't being bound which is why I'm getting white dots. Also, when I draw my sprites on anything other than 0 z-axis, they do not appear -- I read that I need to crease my zfar and znear, but I have no idea how to do this using libgdx (perhaps it's because I'm using ortho projection? What do I use instead?). I know that the texture is usable, since I was able to render it using a SpriteBatch, but I guess I'm not using it properly with OpenGL.

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