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• I Can't run the Netbeans but I installed successfully

  - by David

  I'm new to Ubuntu as well as Netbeans. I installed Netbeans, and I've made sure to install all the JDKs and JREs I could find. It installed without errors. I also saw this question and made sure I followed all the instructions there as well. I never got any error messages of any kind. So far as I know, it installed okay. However, when I try to run Netbeans, I get the message in the bottom of the Netbeans IDE like this: ant -f /root/NetBeansProjects/samp1 -Djsp.includes=/root/NetBeansProjects/samp1/build/web/one.jsp -DforceRedeploy=false -Dclient.urlPart=/one.jsp -Ddirectory.deployment.supported=true -Djavac.jsp.includes=org/apache/jsp/one_jsp.java -Dnb.wait.for.caches=true run /root/NetBeansProjects/samp1/nbproject/build-impl.xml:774: The libs.CopyLibs.classpath property is not set up. This property must point to org-netbeans-modules-java-j2seproject-copylibstask.jar file which is part of NetBeans IDE installation and is usually located at <netbeans_installation>/java<version>/ant/extra folder. Either open the project in the IDE and make sure CopyLibs library exists or setup the property manually. For example like this: ant -Dlibs.CopyLibs.classpath=a/path/to/org-netbeans-modules-java-j2seproject-copylibstask.jar BUILD FAILED (total time: 0 seconds)

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• configure vpn so that it is not the preferred route

  - by pstanton

  Hi all, I recently re-installed XP on my PC. I had a vpn set up on the old system and remember being advised to change one setting so that it wasn't the preferred route for all network traffic. This was ideal as only connections to the target network would be made through the vpn and all normal traffic would go through the regular path unmolested. i remember thinking "why isn't this the default setting!?". now i've formatted my drive and lost the config for that vpn (besides host, username, passwd). does anyone know of the setting i'm referring to? thanks, paul.

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• DOSBox 8.3 filenames disagree with Windows 7

  - by wes

  When I compare a dir in DOSBox 0.74 against a dir from Windows 7 command prompt, the 8.3 filenames differ. Long format (both drives and directories): 2012-07-30_abcdefg-abcde 2012-07-30_abcdefg-abcde.7z 2012-08-06_abcdefg-abcde 2012-08-06_abcdefg-abcde.7z 2012-10-22_IIS-LogFiles 2012-10-22_IIS-LogFiles.zip 2012-11-14_selective-abcde DOSBox 0.74 (dir): 2012-0~1 2012-0~3 2012-1~1 2012-1~3 2012-0~2 7Z 2012-0~4 7Z 2012-1~2 ZIP Windows 7 (dir /x): 2012-0~1 2012-0~1.7Z 2012-0~2 2012-0~2.7Z 2012-1~1 2012-1~1.ZIP 2012-1~2 so for instance if I'm passing in a path to DOSBox, sometimes this happens and whatever I'm trying to automate will fail. Why the difference, and can I change any settings to help DOSBox generate the correct shortnames?

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• In Open Calc, how do I copy a paste cells that contain references to other workbooks?

  - by Gabriel

  I have an OpenOffice Calc sheet with cells containing formulas that refer to another file, e.g: 'file:///C:/path/to/other.xls'#$Sheet1.A1:B2. Note: When I copy the cells from one sheet to another in the same workbookt, it works as expected. When I copy this to a sheet in another workbook, the references are lost and all is left is ''#$Sheet1.A1:B2. I could copy/paste the cell's contents, but that would be fastidious, error-prone, and anyhow not a good solution. How do I keep the external references when copy-pasting from one workbook to another ?

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• error while installing binutils in LFS

  - by user53347

  lfs:/mnt/lfs/sources/binutils-build$ ../binutils-2.15.94.0.2.2/configure \ --target=$LFS_TGT --prefix=/tools \ --disable-nls --disable-werror loading cache ./config.cache checking host system type... i686-pc-linux-gnuoldld checking target system type... i686-lfs-linux-gnu checking build system type... i686-pc-linux-gnuoldld checking for a BSD compatible install... /usr/bin/install -c checking whether ln works... yes checking whether ln -s works... yes checking for gcc... no checking for cc... no configure: error: no acceptable cc found in $PATH

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• Problem with a* implementation in pygame

  - by piyush3dxyz

  Yesterday i decide to make RTS game in pygame(pygame is best).I figured out many components of RTS game like unit selecting,health,resources but only 1 thing i still not understand.. which is a* pathfinding in pygame... I also done little bit of research on wiki,articles and papers...but still cant figure out problem.... function A*(start,goal) closedset := the empty set // The set of nodes already evaluated. openset := {start} // The set of tentative nodes to be evaluated, initially containing the start node came_from := the empty map // The map of navigated nodes. g_score[start] := 0 // Cost from start along best known path. // Estimated total cost from start to goal through y. f_score[start] := g_score[start] + heuristic_cost_estimate(start, goal) while openset is not empty current := the node in openset having the lowest f_score[] value if current = goal return reconstruct_path(came_from, goal) remove current from openset add current to closedset for each neighbor in neighbor_nodes(current) if neighbor in closedset continue tentative_g_score := g_score[current] + dist_between(current,neighbor) if neighbor not in openset or tentative_g_score <= g_score[neighbor] came_from[neighbor] := current g_score[neighbor] := tentative_g_score f_score[neighbor] := g_score[neighbor] + heuristic_cost_estimate(neighbor, goal) if neighbor not in openset add neighbor to openset return failure here is the pseudocode for wiki a* implementation......

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• How do I run Munin plugins written in Ruby, using RVM?

  - by hlg

  Hi! I try to run some Munin plugins written in Ruby. I would like to use RVM, so Munin needs to know where to find Ruby. I tried to change the line calling munin-cron in the cron file as follows: */5 * * * * munin bash -c 'source /usr/local/lib/rvm && rvm 1.9.2@munin && /usr/bin/munin-cron' This leads to error messages in munin-node.log, saying /usr/bin/env: ruby: No such file or directory When I change the plugins' shebangs to the actual path of the Ruby executable it works, but the RVM environment should be set so that '/usr/bin/env ruby' works. It does when I execute the plugins as root. Any ideas?

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• Create Report in Microsoft Excel - Permissions Issue in Team Foundation Server 2010

  - by sammarcow

  I am trying to use the feature "Create a Report in Microsoft Excel" for Visual Studio TFS 2010. I am being prompted for a username and password in Excel for any given Team Project when right clicking the item "Active Tasks", selecting "Create a Report in Microsoft Excel," found in the following path within the Team Explorer pane, from Visual Studio 2010: 'Collection Name' | 'Project Name' | Work Items | Iteration 1 | Active Tasks I am a Team Project Administrator and Collection Administrator. I checked The SharePoint site: http :// 'serverName'/Reports/Pages/Folder.aspx and have full sitewide and project permissions on this site. I loaded SQL Server Management Studio on the machine running the instance of TFS (and also the SQL backend for TFS) and ensured that I had roles "serveradmin" and "sysadmin". How do I run this report? Specifically, what permissions are required?

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• Error when installing ubuntu-zfs

  - by ubiquibacon

  I'm switching from FreeNAS to Ubuntu 12.04 LTS. After a vanilla install of Ubuntu has been completed I run the following commands in the order shown to install ZFS: apt-get install python-software-properties add-apt-repository ppa:zfs-native/stable apt-get -y -q update && apt-get -y -q upgrade apt-get install ubuntu-zfs When the last command is run ZFS is installed and seems to be working correctly... mostly (more on that later). However, when the last command is run I get this error (full log here): configure: error: *** Please make sure the kmod spl devel <kernel> package for your *** distribution is installed then try again. If that fails you *** can specify the location of the spl objects with the *** '--with-spl-obj=PATH' option. What is this error and how do I fix it? Now I said mostly earlier because my pool's don't auto mount when the server restarts the way they should. All my reading (mostly from this page) indicates that mountall should just take care of the mounting. I have followed the instructions on that page and I cannot get mountall to work correctly. My pools will only auto mount on restart if I edit /etc/fstab or change the ZFS_MOUNT and ZFS_UNMOUNT options in /etc/default/zfs.

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• What's the deal with NTFS tags in windows 7

  - by polarix

  So back in the days of 'longhorn' there was this WinFS idea which was both cool looking and scary looking. Then it seemed to disappear, but we were told that many of the concepts would be rolled into Vista. Then maybe Win7. Anyway, nowadays if you look at a win7 Explorer window, you can have columns that have a lot of tag-based info about a file (right click on column header-more...), including one called "tags". Is this something in NTFS that can be modified per-file somehow? Is its GUI hiding, or is this something that's infinitely-delayed, or is it just a figment of my imagination? Sure would be nice to be able to get around the NTFS path 256 character limit for searches, and to filter file folders per Excel 2007.

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• Beginners guide to developing optimization software

  - by Florenc

  I am novice in "serious" programming i.e. applications that deal with real-life applications and software projects that go beyond school assignments. My interests include optimization, operations research, algorithms and lately i discovered how much I do like software design/development/engineering. I have already developed some simple desktop applications for some "famous" problems like TSP using heuristc approaches, a VRP solver (in progress) and so on. While developing this kind of software I actually used basic concepts taught at school such as object-orientation analysis and design. But, I found these courses rather elementary and quite boring (for my expectations). So I decided to go a little further and start developing "real" software (and this is where I realized how important and interesting software engineering/design is.) Now, here's my issue: I can not find a "study guide" for developing software of this kind. Currently, there are numerous resources out there (books, websites, tutorials) in designing and developing complex IS, web applications, smartphone apps but I can't find a book for example entitled "optimization software development". Definetly, someone could claim that "design patterns apply to software in general" but that's not my point. My point is that I could simply use my imagination for "simple" implementations, but what happens, when my imagination can not go further? In other words I'm looking for a guide/path to bridge the gap between: Mathematics-Algorithm Design-Software Engineering-Optimization-Software development

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• Can I fork a copy command on ReadyNAS SSH?

  - by DanyW

  I have a ReadyNAS 102 with a couple of USB drives attached. There were times I wanted to copy files between volumes. Unfortunately I have also accidentally cut off copying process by accidentally closing off the SSH sessions. Is it possible for me to fork a cp or mv process on SSH? As it currently stands when I close the SSH session, be it by accidentally closing the terminal window or closing my laptop screen and putting it to sleep, the copy process stops. Can I do something like cp ~/blah /some/other/path & and have the process keep running to completion in the background even if the SSH session is terminated?

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• inotifywait usage and exclude

  - by user58542

  I want to monitor special path to any event of create or modified files recursively in it via inotifywait but i cant know what's problem. i have some folder that i want to exclude thame. watchpath -> folder1 -> file1 -> ingnorefile1 [IG] -> ignorefolder1 [IG] i have problem to exclude them. inotifywait -mr --exclude '(ignorefolder1|folder1\/ingnorefile1)' -e modify -e create -e delete . | while read date time dir file; do what is correct regular expression ?

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• The 'which' command returns nothing via cron, but works via console

  - by Zárate

  Hi there, I've written a little utility in haXe + Neko that needs to execute some GIT commands. To avoid hardcoding the path to the GIT executable I'd like to use the which command to find out where it is. Everything works as expected when running manually from the console, but not when the the app runs on a cron job. I'm aware of the restricted environment (here or here) when you run a script using cron, but still surprised this doesn't work: /usr/bin/which git >> /home/user/git.txt The text file is created but the content is empty. Again, when run from the console it works as expected. Any ideas? I'm running OS X Leopard, if that helps. Thanks : ) Juan

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• In what fields do programming and Business Sciences intersect? [on hold]

  - by Alainus

  One note of clarification: I'm getting a lot of comments saying that this question is too personal, too relative, subjective, and that career-path questions get quickly deleted. This is not a question about me or my career. This question is just what the title says: What fields exist that converge programming and business. Now the question: I read this answer regarding off-topic questions, and I was afraid this might be, so I'll try to keep it general and helpful for others. Also, this one has a similar background but formulates a different question from it. I have a Business Administration degree, but I've programmed since I can remember, and it's been my only job for years. However, my problem is the same that the majority of "amateuressional" programmers have: - Incomplete knowledge of the fundamentals. - Anxiety to keep up. - Feeling of not making anything useful of "the other degree". - Afraid of finally becoming a jack of all trades (master of none). Which further studies (specific degrees or fields) exist that allow a person with a BS degree converge into a programming career, without having to sacrifice coding, allowing to further expand the knowledge of C.S. fundamentals, and also without completely sacrificing the first?

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• Bending of track in a racing game

  - by caius

  I am trying to create a small racing game in which the track would be modeled using a BSpline curve for the path's center line and directional vectors to define the 'bending' of the track at each point. My problem is that I don't know how to calculate the correct bending / slope of the curve, in such a way that it would be optimal or at least visually nice for a car to 'bend in the corner'. My idea was to use the direction of the 2nd derivatives of the curve, however while this approach looks fine for most of the track, there are points in which the 2nd derivative makes sharp 'twists' / very quick 180 degree flips. I also read about 'knots' of bsplines, but I don't know if such 'twist' in 2nd derivatives is a knot or knots are something else. Can you tell me that using a BSpline: 1. How could I calculate a visually nice bending of a track for a racing game? 2. Is it possible to do this by using some simple calculations of centripertal force / gravity? 3. Is it possible to do this by using 1st, 2nd and 3rd derivatives of the BSpline curve? I am not looking for the 'physically correct' bending angle for the track, I would just like to create something which is visually pleasing in a simple game. I am using a framework which has a built-in class for BSpline, including support for 1st, 2nd and 3rd derivatives of the curve.

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• crontab doesn't work on centos 6

  - by sbxmal

  /etc/crontab: SHELL=/bin/bash PATH=/sbin:/bin:/usr/sbin:/usr/bin MAILTO=root HOME=/ 01 * * * * root run-parts /etc/cron.hourly 02 4 * * * root run-parts /etc/cron.daily 22 4 * * 0 root run-parts /etc/cron.weekly 42 4 1 * * root run-parts /etc/cron.monthly */2 * * * * /usr/bin/php -q /home/dorsen/public_html/cron-test.php */2 * * * * http://www.mysiteurl.com/cron-test.php - also doesn't work If i run this file directly in browser - all fine What i did : root@vded10625 [~]# yum remove cronie-anacron .... Complete! root@vded10625 [~]# yum install cronie-noanacron sysstat .... Complete! root@vded10625 [~]# service crond start Starting crond: [ OK ] root@vded10625 [~]# chkconfig crond on root@vded10625 [~]# service crond restart Stopping crond: [ OK ] Starting crond: [ OK ] Will be pleased for any help

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• Postfix sasl: Relay access Denied (state 14)

  - by Primoz

  I have postfix installed with dovecot. There are no problems when I'm trying to send e-mails from my server, however all e-mails that are coming in are rejected. My main.cf file: queue_directory = /var/spool/postfix command_directory = /usr/sbin daemon_directory = /usr/libexec/postfix mail_owner = postfix inet_interfaces = all mydestination = localhost, $mydomain, /etc/postfix/domains/domains virtual_maps = hash:/etc/postfix/domains/addresses unknown_local_recipient_reject_code = 550 mynetworks = 127.0.0.0/8 alias_maps = hash:/etc/aliases alias_database = hash:/etc/aliases home_mailbox = Maildir/ debug_peer_level = 2 debugger_command = PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin xxgdb $daemon_directory/$process_name $process_id & sleep 5 sendmail_path = /usr/sbin/sendmail.postfix newaliases_path = /usr/bin/newaliases.postfix mailq_path = /usr/bin/mailq.postfix setgid_group = postdrop html_directory = no manpage_directory = /usr/share/man sample_directory = /usr/share/doc/postfix-2.3.3/samples readme_directory = /usr/share/doc/postfix-2.3.3/README_FILES smtpd_sasl_type = dovecot smtpd_sasl_path = private/auth smtpd_sasl_auth_enable = yes smtpd_recipient_restrictions = check_policy_service inet:127.0.0.1:9999, permit_mynetworks, permit_sasl_authenticated, reject_non_fqdn_recipient, reject_unknown_recipient_domain, reject_unauth_destination, smtpd_sender_restriction = reject_non_fqdn_sender broken_sasl_auth_clients = yes UPDATE: Now, when e-mail comes to the server, the server tries to reroute the mail. Example, if the message was sent to [email protected], my server changes that to [email protected] and then the mail bounces because there's no such domain on my server.

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• Traverse tree with results. Maybe type in Java?

  - by Angelo.Hannes

  I need to check a tree's node state. It can either be OK or NOT_OK. But that state is dependent on its children. So for a node to be OK, every of its children needs to be OK. If one or more of its children is NOT_OK the whole node is NOT_OK. To determine the state of a node I need to aggregate some properties of the node. So I thought of two possible implementations. And they are more or less covered in this question: Why is Option/Maybe considered a good idea and checked exceptions are not? Exception I could pass the properties up the recursion path, and throw an exception if something went wrong. Maybe I implement an Maybe type and let it either hold an error or the aggregated properties. Maybe it is more an Either. I tend towards the last option. And I'm thinking of an enum with two objects. Where I can additionally set those aggregated properties. Am I on the right track? I'm not familiar with the new JDK8 functional stuff. But I'm stuck on JDK7 anyway, so please focus on JDK7.

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• VirtualBox: VBoxManage modifyhd hosting on mac os x resize not supported

  - by dwstein

  I am a complete newbie. i'm hosting VM on OS X using virtualbox. I'm trying to resize the virtual hard drive by using the following command in the terminal. VBoxManage modifyhd "<absolute path including name and extension>" --resize 20480 I used a disk size of 25480 (i'm not really sure how to pick the correct size. and I got the following error: Progress state: VBOX_E_NOT_SUPPORTED VBoxManage: error: Resize hard disk operation for this format is not implemented yet! virtualbox version 4.1.18 I don't really even know what to ask. What am I doing wrong?

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• supervise/daemontools conflicts with apache -D FOREGROUND

  - by Kevin G.

  Hoping that somebody can help us understand this behavior. We've got a bunch of daemontools services under /etc/service/. One of the services controls apache, and the run script has this in it. exec envdir /var/lib/supervise/wwwproxy/env setuidgid root bash <<-BASH ulimit -n 8192 # also increase the running user's file descriptor limit exec apache2 -f /path/to/demo_apache2.conf -D FOREGROUND BASH We were having the problem that svc -d /etc/service/* actually had the effect of restarting all the services, it didn't take them down. We finally tracked it down to that one service, and found that svc -d /etc/service/apache2 would bring up any other service was down, including itself. Changing FOREGROUND to NO_DAEMONIZE fixes the behavior, but we'd really like to understand what's going on. Can anybody explain why an svc -d on one service would bring an other service up? Thanks for any clue you can offer.

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• Setting up multiple cores for apache solr for Ubuntu 12.04 and Drupal 7

  - by chrisjlee

  I'm setting up solr locally for my development purposes and integration with Drupal 7. I'm not very familiar with tomcat. My background has primarily been LAMP setups. So I went and installed the package provided by ubuntu for apache solr following this guide. sudo apt-get install tomcat6 tomcat6-admin tomcat6-common tomcat6-user tomcat6-docs tomcat6-examples sudo apt-get install solr-tomcat I've got that working. The apt-get package manager does a great job and allows me to setup solr but with one core. What steps need to be taken to enable multi core setup for apache solr? And below is my solr.xml file: sudo nano /var/lib/tomcat6/conf/Catalina/localhost/solr.xml <!-- Context configuration file for the Solr Web App --> <Context path="/solr" docBase="/usr/share/solr" debug="0" privileged="true" allowLinking="true" crossContext="true"> <!-- make symlinks work in Tomcat --> <Resources className="org.apache.naming.resources.FileDirContext" allowLinking="true" /> <Environment name="solr/home" type="java.lang.String" value="/usr/share/solr" override="true" /> </Context>

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• JDBC CLASSPATH Not Working

  - by AeroDroid

  I'm setting up a simple JDBC connection to my working MySQL database on my server. I'm using the Connector-J provided by MySQL. According to their documentation, I'm suppose to create the CLASSPATH variable to point to the directory where the mysql-connector-java-5.0.8-bin.jar is located. I used export set CLASSPATH=/path/mysql-connector-java-5.0.8-bin.jar:$CLASSPATH. When I type echo $CLASSPATH to see if it exists, everything seems fine. But then when I open a new terminal and type echo $CLASSPATH it's no longer there. I think this is the main reason why my Java server won't connect to the JDBC, because it isn't saving the CLASSPATH variable I set. Anyone got suggestions or fixes on how to set up JDBC in the first place?

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• How to print out information about Task Scheduler in powershell script?

  - by Jimboy

  I am trying to print out information from the Task Scheduler from the local computer in a powershell script so other users can print out this information as well and not have to access the Task Scheduler. I need the script to print out the name, status, triggers, next run time, last run time, last run result, author and created. I can print out the information about the name, next run time, and last run time, but the rest wont print out when i run the script. I have already got a little start on my script and got the fields down. $schedule = new-object -com("Schedule.Service") $schedule.connect() $tasks = $schedule.getfolder("\").gettasks(0) $tasks | select Name,Status,Triggers,NextRunTime,LastRunTime,LastRunResult,Author,Created | ft foreach ($t in $tasks) { foreach ($a in $t.Actions) { $a.Path } } Any help or suggestions would be appreciated.

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• which command run in cron returns nothing

  - by Zárate

  Hi there, I've written a little utility in haXe + Neko that needs to execute some GIT commands. To avoid hardcoding the path to the GIT executable I'd like to use the which command to find out where it is. Everything works as expected when running manually from the console, but not when the the app runs on a cron job. I'm aware of the restricted environment (here or here) when you run a script using cron, but still surprised this doesn't work: /usr/bin/which git >> /home/user/git.txt The text file is created but the content is empty. Again, when run from the console it works as expected. Any ideas? I'm running OS X Leopard, if that helps. Thanks : ) Juan

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