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Articles indexed Friday December 14 2012

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• chown select files only

  - by user114642

  I use the (excellant) unison to sync two file servers and I've just realised i've synced a number of files without using the switch in unison that maintains the file user ownership. these files now have a user of root (coz i have to run unison as root) Can I chown to a specified user BUT only change the files that now have the owner root and do so recursively in the directory in question? Sure i can but not sure of the arguments to "find files with owner 0 and change them to owner xxxx". THX for any help...

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• background process outputs to the console

  - by broiyan

  Suppose test.sh is a bash script that is empty or contains only exit 0. When the script is backgrounded, what is the significance of the 1 and 16320 printed to the console? b@sam:~/Documents/bashscripts$ ./test.sh & [1] 16320 b@sam:~/Documents/bashscripts$ [1]+ Done ./test.sh b@sam:~/Documents/bashscripts$ Then if user hits ENTER at the command prompt, as illustrated above, another line appears and it shows this [1]+ Done ./test.sh What is the significance of the 1 digit and the + symbol?

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• Lubuntu with only Ubuntu's workspace/tiling features

  - by Johnny Tremain

  I searched around for a long time but found nothing. I am moving from Ubuntu to Lubuntu. Everything is great (I am okay with the bland style) except for three features that I use regularly in Ubuntu. 1) Win+w / Win+s zooms out to see an overview of the current workspace and all the workspaces respectively. 2) Ctrl+Alt+num which puts the current application in a specific portion of the workspace. 3) Snap to edge of workspace. How would I get those three features onto Lubuntu? Would that cancel out the benefit of Lubuntu, so I should just stick with Ubuntu (or any distro you can recommend)? Thank you.

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• unable to send mail from postfix on Ubuntu 12.04

  - by gilmad

  I'm trying to send an email through Google from my localhost. (via PHP5.3) But Google keeps on blocking my requests. I tried to follow the solutions given to a few similar questions, but for some reason they do not work. I followed these instructions to configure it - http://www.dnsexit.com/support/mailrelay/postfix.html Now for the config data: my main.cf file looks like that: relayhost = [smtp.gmail.com]:587 smtp_fallback_relay = [relay.google.com] smtp_sasl_auth_enable = yes smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd smtp_sasl_security_options = my sasl_passwd looks like that: [smtp.gmail.com]:587 [email protected]:password and that is how the mail.log rows look like: Dec 14 10:24:50 COMP-NAME postfix/pickup[5185]: 1C3987E0EDD: uid=33 from= Dec 14 10:24:50 COMP-NAME postfix/cleanup[5499]: 1C3987E0EDD: message-id=<[email protected] Dec 14 10:24:50 COMP-NAME postfix/qmgr[5186]: 1C3987E0EDD: from=, size=483, nrcpt=1 (queue active) Dec 14 10:24:50 COMP-NAME postfix/smtp[5501]: 1C3987E0EDD: to=, relay=smtp.gmail.com[173.194.70.109]:587, delay=0.61, delays=0.19/0/0.32/0.1, dsn=5.7.0, status=bounced (host smtp.gmail.com[173.194.70.109] said: 530 5.7.0 Must issue a STARTTLS command first. w3sm8024250eel.17 (in reply to MAIL FROM command)) Dec 14 10:24:50 COMP-NAME postfix/cleanup[5499]: C20677E0EDE: message-id=<[email protected] Dec 14 10:24:50 COMP-NAME postfix/bounce[5502]: 1C3987E0EDD: sender non-delivery notification: C20677E0EDE Dec 14 10:24:50 COMP-NAME postfix/qmgr[5186]: C20677E0EDE: from=<, size=2532, nrcpt=1 (queue active) Dec 14 10:24:50 COMP-NAME postfix/qmgr[5186]: 1C3987E0EDD: removed

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• Conflict between variable substitution and CJK characters in BASH

  - by AndreasT

  I encountered a problem with variable substitution in the BASH shell. Say you define a variable a. Then the command $> echo ${a//[0-4]/} prints its value with all the numbers ranged between 0 and 4 removed: $> a="Hello1265-3World" $> echo ${a//[0-4]/} Hello65-World This seems to work just fine, but let's take a look at the next example: $> b="?1265-3?" $> echo ${b//[0-4]/} ?1265-3? Substitution did not take place: I assume that is because b contains CJK characters. This issue extends to all cases in which square brackets are involved. Surprisingly enough, variable substitution without square brackets works fine in both cases: $> a="Hello1265-3World" $> echo ${a//2/} Hello165-3World $> b="?1265-3?" $> echo ${b//2/} ?165-3? Is it a bug or am I missing something? I use Lubuntu 12.04, terminal is lxterminal and echo $BASH_VERSION returns 4.2.24(1)-release. EDIT: Andrew Johnson in his comment stated that with gnome-terminal 4.2.37(1)-release the command works fine. I wonder whether it is a problem of lxterminal or of its specific 4.2.24(1)-release version.

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• How to install Joomla in Ubuntu as localhost?

  - by Leon-TastyDev

  I have installed the lamp-server but i stuck in one certain step.. Were it says remove installation folder if i click the button "Remove installation folder:" it says "error" and i guess this is because it doesn't have root previlages. So i run sudo nautilus go to the folder var/www, and remove the folder installation.. So now when i try to access my localhost No configuration file found and no installation code available. Exiting... I am confused, it asked me to remove it and now that is removed it needs it..:?

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• HP dv2700 series, Wifi not working in Ubuntu 12.10, Wifi Button always disabled

  - by Chicoscience

  I have a HP dv2745se laptop. I always had Ubuntu with the Native Windows Vista and Wifi worked fine. Suddenly my Ubuntu wouldn't load anymore, I tried fixing it for a week and eventually I formatted its partition and just installed Ubuntu 12.10 This laptop has a Wifi switch that works fine in Vista disabling / enabling the wireless connection. HP Wireless Assistant in Windows say Wireless is on. However, whenever I log in Ubuntu the Wifi button is always orange (disabled) and Wireless never works. I had this problem once when I had Ubuntu 12.04 and I fixed it by verifying in Windows that the Wireless Assistant showed the Wireless LAN in "On" mode. However, the same does not work now. I've seen some possible solutions that involve updating the firmware with apt-get. There comes my 2nd problem, my network adapter card is not working and thus I have no internet at all. Any suggestions? Thanks!

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• Broke my sudoers password, how do I reset it without using sudo?

  - by Eric Dand

  I thought it would be a good idea to finally take the password off my little netbook since it has never actually been of any use, and has mostly just slowed down . But when I went to change my password, there wasn't even an option to make it blank, and any attempt to make it a few easy characters was met with "Password too weak". So I did what any good geek would do and popped open the terminal, read the manual entry for passwd and quickly used the -d option to remove the password from my account. It all went well for a couple days (I even managed to also make my keychain password blank) until I tried to update the thing. My sudoers password is not blank, and it's not my old password. I have no idea what it is. How do I reset it (or even better, make it blank) without the use of the sudo command?

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• Problem video nvidia ubuntu 12.04

  - by dragonov7

  I just did a fresh install of ubuntu 12.04 on my PC (Dell precision 370) but the video is not working as it should. Problems: When I log in to unity 3D I get a transparent bar (where the firefox, libre office, etc icons are) but I can see the tooltips when I put my mouse over where the icons are, I can see the top toolbar with no problem and I see just white on the rest of the desktop! When I log in using unity 2D I see the left bar cut in half (so I can't see the trash icon that is at the botton), the toolbar at the top shows OK and the desktop show OK but with some apps. For example, if I open a terminal and maximize it, it will only show just where the left toolbar "cuts". But if I open firefox it will open fine. Config: My PC comes with a nvidia quadro nvs 280 and I see that by default ubuntu is using the nouveau driver. Workarounds tried: I tried uninstalling the nouveau driver and the desktop works fine but I can use only unity 2D. I tried installing the nvidia-173 drivers using synaptic but I get "Could not apply changes! Fix broken packages first". I go to "Edit - Fix Broken packages" and I get the error: "E: Unable to correct problem, you have held broken packages.E: Error, PkgProblemResolver::Resolve generated breakes, this may be caused by held packages.E:Unable to correct dependencies" Output of lspci: 01:00.0 VGA compatible controller: NVIDIA Corporation NV37GL [Quadro PCI-E Series] (rev a2) Any idea so as to what I should do? Thanks in advance for any help. PS: Ah, the nvidia-173 driver was working fine on ubuntu 10.04.

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• How do I configure WakeOnUSB properly?

  - by wishi

  How do I configure Wake-On-USB properly on a 10.04 or 10.10 Ubuntu (2.6.36 and higher if needed)? (Wake-on-USB is when the computer is asleep and for example a USB Keyboard event wakes up the machine!) The notebook is an Acer Aspire Timeline X 1830T. I don't know in which way the Linux Kernel supports the controllers. There are different ways to approach this, for example /proc/acpi/wakeup... or UDEV... or something with HAL? /proc/acpi/wakeup shows every device in S4, but I need S3. Device S-state Status Sysfs node P0P2 S4 *disabled PEGP S4 *disabled P0P1 S0 *disabled pci:0000:00:1e.0 EHC1 S4 *disabled pci:0000:00:1d.0 USB1 S4 *enabled USB2 S4 *disabled USB3 S4 *disabled USB4 S4 *disabled EHC2 S4 *disabled pci:0000:00:1a.0 USB5 S4 *disabled USB6 S4 *disabled USB7 S4 *disabled HDEF S0 *disabled pci:0000:00:1b.0 RP01 S5 *disabled pci:0000:00:1c.0 PXSX S5 *disabled pci:0000:01:00.0 RP02 S0 *disabled pci:0000:00:1c.1 PXSX S5 *disabled pci:0000:02:00.0 RP03 S0 *disabled PXSX S5 *disabled RP04 S0 *disabled PXSX S5 *disabled RP05 S0 *disabled PXSX S5 *disabled RP07 S0 *disabled PXSX S5 *disabled RP08 S0 *disabled PXSX S5 *disabled GLAN S0 *disabled PEG3 S4 *disabled PEG5 S4 *disabled PEG6 S4 *disabled SLPB S3 *enabled S4, which is Suspend-To-Disk afaik... doesn't seem to work either if I echo USB1 into the wakeup table. It just sets an S4 flag. can I get the USB ports in S3? I want to make the machine wakeup from Suspend-To-Ram (S3, ACPI standard) in case a key on my external keyboard is pressed. It only wakes up if a key on the internal Laptop keyboard is pressed... from Suspend To Ram. It seems if I plug in a USB mouse, that the USB port isn't even powered. I have no BIOS option to change this. Further specific information regarding the device: usb-devices T: Bus=01 Lev=02 Prnt=02 Port=01 Cnt=01 Dev#= 13 Spd=1.5 MxCh= 0 D: Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1 P: Vendor=04d9 ProdID=1603 Rev=03.10 S: Manufacturer= S: Product=USB Keyboard C: #Ifs= 2 Cfg#= 1 Atr=a0 MxPwr=100mA I: If#= 0 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=01 Prot=01 Driver=usbhid I: If#= 1 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=00 Prot=00 Driver=usbhid root@underwater-laptop:/# lsusb [...] Bus 001 Device 013: ID 04d9:1603 Holtek Semiconductor, Inc. Bus 001 Device 004: ID 0bda:0138 Realtek Semiconductor Corp. Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub [...] If this doesn't work I have to properly explain why :( - but I think it is very hard to research this kernel internal. Any hints for good information here? I hope it's possible... I'm just looking for any solution. edit: this, waking up on USB, works on Windows! Thanks a lot, Marius

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• How do I rename a mounted Truecrypt volume?

  - by invert

  When I mount the Truecrypt file on my USB drive it shows up as truecrypt1. The volume is FAT, using mtools to rename a volume label involves e2label /dev/sdbx, however truecrypt1 does not map to a physical partition. fdisk -l does not show the volume partition (only the physical USB device), and df -h lists the volume path as /dev/mapper/truecrypt1. Finally, using the Nautilus 'Rename' context action, gives the error: "Sorry, could not rename "truecrypt1" to "towel": Operation not supported by backend". Apparently this can be done in Win, but how can I rename this volume in Ubuntu? As Nicolas said, specifying the mount point names the partition the same. The truecrypt GUI does not remember the mount point I set, so I specify the mount points in a script which I placed in my main menu. #!/bin/bash gksudo truecrypt /media/usbdrive/encryptedfile /media/securedata/

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• Piumini Woolrich è popolare a livello globale

  - by WoolrichParka

  Woolrich Parka femmine è molto popolare per la sua calda e resistente a freddo times.You può comprare un creato di copertura cappotto in pile che è proprio come una tua grande-nonno, o iniziare la vostra abitudine proprio con mobili su misura di qualità che durerà anche nel la prossima creazione del vostro family.Now, Woolrich è popolare a livello globale e la donna Woolrich Arctic Parka questo parka inverno è anche il più noto disponibile sul settore. Con il suo stile eccellente riscaldata e, ad alte prestazioni, Maestro piace molto.wufengfengmaple36

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• How do i get this to work? [closed]

  - by user1867842

  This is my code.... it speaks for itself. <?php define("html","<html>"); define("htmlEnd","</html>"); etc... etc... ?> What i'm trying to do is make a wrapper for html's tags so they won't be needed anymore. But i can't get any of the attributes for html elements to be defined in php. This again speaks for itself... i don't know any other way of saying this... i guess how would i make a other mark up language like html without any tags but still keep everything about html is what i'm trying to say.....

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• How to parse JSON data from web more faster [closed]

  - by Kaidul Islam Sazal

  I have json inventory inventory.json on the server like this: [ { "body" : "SUV", "color" : { "ext" : "White diamond pearl", "int" : "Taupe" }, "id" : "276181", "make" : "Acura", "miles" : 35949, "model" : "RDX", "pic" : [ { "full" : "http://images1.dealercp.com/90961/000JNBD/001_0292.jpg" } ], "power" : { "drive" : "Front wheel drive", "eng" : "2.3L DOHC PGM-FI 16-VALVE", "trans" : "Automatic" }, "price" : { "net" : 29488 }, "stock" : "6942", "trim" : "AWD 4dr Tech Pkg SUV", "vin" : "5J8TB2H53BA000334", "year" : 2011 }, { "body" : "Sedan", "color" : { "ext" : "Premium white pearl", "int" : "Taupe" }, "id" : "275622", "make" : "Acura", "miles" : 40923, "model" : "TSX", "pic" : [ { "full" : "http://images1.dealercp.com/90961/000JMC6/001_1765.jpg" } ], "power" : { "drive" : "Front wheel drive", "eng" : "2.4L L4 MPI DOHC 16V", "trans" : "Automatic" }, "price" : { "net" : 22288 }, "stock" : "6945", "trim" : "4dr Sdn I4 Auto Sedan", "vin" : "JH4CU2F66AC011933", "year" : 2010 } ] here are two index, There are almost 5000 index like this. I parsed this json like this: var url = "inventory/inventory.json"; $.getJSON(url, function(data){ $.each(data, function(index, item){ //straight-forward loop if(item.year == 2012) { $('#desc').append(item.make + ' ' + item.model + ' ' + '<br/>' + item.price.net + '<br/>' + item.pic[0].full); } }); }); This is working fine.But the problem is that, this searching and fetching process is little bit slow as there are 5000 indexes already and it's increasing day by day. It seems that, it is a straight-forward loop to parse the data and a normal brute-force method. Now I want to know if there any time efiicient way to parse more faster.Any faster method to parse instead of straight-forward loop ?

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• Are the contents in the front page considered as duplicate of the post?

  - by yibe

  I asked this same question on stackoverflow, but closed being off topic. Therefore, I am posting it here. In Wordpress blogs, the front page of the blog will display many posts in whole or excerpts. When the link to the post is clicked, the content will be opened with an other template file(single.php). Can we say that the content displayed in the front page and the post pages are considered as duplicate? Does it harm SEO in any way?

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• How to resolve canonical issue of a website hosted in yahoo small business (Shared Hosting)

  - by Vinay

  I have a website http://www.myapp.com hosted in yahoo small business, which is shared hosting and I don't have access to .htaccess file to modify. I called up yahoo team regarding the issue But It cannot be done. (It can be achieved in yahoo stores). Basically I want http://myapp.com and http://www.myapp.com/index.php must be redirected to http://www.myapp.com. So, What is the workaround for this.

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• Is it possible to use a VB master page to cover an entirely separate directory written in C#?

  - by Jason Weber

  I have a company website written in vb.net. There are 5 master pages. I recently began utilizing a forum application, also asp.net 4.0, but this one is written in C#. My forum directory is domain.com/knowledgebase/. Is there any possible way to take one of my vb.net master pages and somehow integrate into the /knowledgebase/ directory? Here's what's currently This is what's in the top of every page in my site: <%@ Page Title="USS Vision Inc." Language="VB" MasterPageFile="~/homepage.master" AutoEventWireup="false" CodeFile="default.aspx.vb" Inherits="_default" culture="auto" meta:resourcekey="PageResource1" uiculture="auto" Debug="true" %> This is what's in my /knowledgebase/ directory: <%@ Page Language="C#" AutoEventWireup="true" ValidateRequest="false" Inherits="YAF.ForumPageBase" culture="auto" uiculture="auto" %> <%@ Register TagPrefix="YAF" Assembly="YAF" Namespace="YAF" %> <script runat="server"> Is it somehow possible to use, for instance, homepage.master in the /knowledgebase/ directory? If so, how would I accomplish this? Thanks for any guidance anybody can offer!

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• Where in a typical rendering pipeline does visibility and shading occur?

  - by user29163

  I am taking a computer graphics course. The book and the lecture notes are vague on the on the order of flow between the different steps in the rendering process. For example, if we have specified a view in a scene, and then want to perform a projection transformation for that given view, then we have to go through a sequence of transformations. In the end we end up with a normalized "viewcube" ready to be mapped 2D after clipping. But why do we end up with a cube (ie 3D thing), when a projection results in projecting the 3D objects to 2D. (depth information is lost?) The other line of reasoning is that all information further needed is stored within the "cube" and that visibility detection and shading is performed with respect to this cube and then we perform rasterezation.

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• Generated 3d tree meshes

  - by Jari Komppa

  I did not find a question on these lines yet, correct me if I'm wrong. Trees (and fauna in general) are common in games. Due to their nature, they are a good candidate for procedural generation. There's SpeedTree, of course, if you can afford it; as far as I can tell, it doesn't provide the possibility of generating your tree meshes at runtime. Then there's SnappyTree, an online webgl based tree generator based on the proctree.js which is some ~500 lines of javascript. One could use either of above (or some other tree generator I haven't stumbled upon) to create a few dozen tree meshes beforehand - or model them from scratch in a 3d modeller - and then randomly mirror/scale them for a few more variants.. But I'd rather have a free, linkable tree mesh generator. Possible solutions: Port proctree.js to c++ and deal with the open source license (doesn't seem to be gpl, so could be doable; the author may also be willing to co-operate to make the license even more free). Roll my own based on L-systems. Don't bother, just use offline generated trees. Use some other method I haven't found yet.

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• PHP string enocding issue - Extra characters appearing

  - by ryan

  I see extra characters like â showing because of encoding issues as I found out here - HTML encoding issues - "Â" character showing up instead of "&nbsp;" I understand that if I set the browser meta encoding to UTF-8, these will not affect anything but I need to strip these extra characters from the database for other purposes. For eg. : Text: ↑ should be become Text: ? But if I run it through utf8_decode it gives me Text: ??? For every other occurrence of the â character, it converts properly to a blank space. Any help will be appreciated.

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• Matlab Coin Toss Simulation

  - by user1772959

  I have to write some code in Matlab that simulates tossing a coin 150 times. I have to count how many times the coin lands on heads and create a vector that gives a running percentage of the heads. Then I have to make a table of the number of trials, random 'flips", and the running percentages of heads. I assume random "flips" means heads or tails for that trial. I also have to create a line graph with trials on the x-axis and probabilities (percentages) on the y-axis. I'm assuming the percentages are just the percentage of getting heads. Sorry if this post was long. I figure giving the details now will make it easier to see what I was trying to do with the code. I didn't create the table or plot yet because I'm not even sure how to code for the actual problem. NUM_TRIALS = 150; trials = 1:NUM_TRIALS; heads = 0; t = rand(NUM_TRIALS,1); for i = trials if (t < 0.5) heads = heads + 1; end z = zeros(NUM_TRIALS,1); percent_h = heads/trials; end

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• mailto: anchor links unloading html5 video in Chrome

  - by Robin Pyon

  I have a very simple page with a <video> tag and an email anchor link: http://jsfiddle.net/6GquX/3/ Clicking the email link in Chrome (OS X 10.8 + Win7, 23.0.1271.97) invokes the beforeunloadchange event and causes the video to unload, which isn't the desired outcome. Curiously enough, if I let the video buffer a bit and then click the email link, the video keeps playing and doesn't unload. To my knowledge this only occurs in Chrome and I'm truly at a loss. Visiting any HTML5 video player site (videojs, flowplayer etc), starting a HTML5 video and then immediately simulating an email click with document.location.href = "mailto:[email protected]" in the dev console yields the same error. However, I'm inclined to think it's the way in which the video has been encoded as I'm unable to recreate the above with a video downloaded from YouTube's HTML5 player: http://jsfiddle.net/6GquX/4/ (source) 1. Is it possible that YouTube are encoding their videos in a particular way to combat this? 2. Are there any strategies / hacks I can employ to get around this?

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• How i change the Enabled= attribute via a preloaded field

  - by user1904656

  I want to modify the PXUIField Enabled=false/true using an existing boolean field #region LastBatNbr public abstract class lastBatNbr : PX.Data.IBqlField { } protected String _LastBatNbr; [PXDBString(10, IsFixed = true)] [PXUIField(DisplayName = "Last Batch Nbr")] public virtual String LastBatNbr { get { return this._LastBatNbr; } set { this._LastBatNbr = value; } } #endregion

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• Sqllite doesn' write a column

  - by user1904675

  I do this: DatabaseHelper dbHelper = new DatabaseHelper(context); dbHelper.getWritableDatabase(); String sql = "insert into "+getTableName()+("+DatabaseHelper.PRODUCT_MARK+","+DatabaseHelper.PRODUCT_NAME+") VALUES ('"+input.getMark()+"','"+input.getName()+"')"; System.out.println(sql); getDatabase().execSQL(sql); dbHelper.close(); The system print 12-14 16:53:33.857: I/System.out(1350): insert into product (pMark,name) VALUES ('aaaaa ','zz') But when I read from db the property mark is not valorized... Where is my mistake?

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• jQuery Mobile tap bug : same target twice

  - by hugo

  I'm working on displaying some text in an UIWebView on iOS. I'd like to get the content of the HTML element tapped by the user. If he taps on a paragraph for example, a popup shows the paragraph content. I'm using jQuery Mobile to achieve this. Here's what I'm doing : $('body').tap(function(e) { var tappedElement = $(e.target); alert(tappedElement.text()); }); It works for the first tap. The second tap no matter where it is, returns the same text. The event seems to be ok but the target property of the second tap is wrong. On the third tap all comes back to normal and so on ... What am I missing here ? thx

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