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• Map /dev/bus/usb node to /sys node on Linux

  - by Cody Brocious

  I'm using libusb to find and access a USB device, but once I get the information I need from there, I need to map it to a /sys node. This could be to the actual USB bus it's on, the /sys/bus/usb-serial node (which is where I'm going to get eventually), or effectively anywhere else since I can walk the tree from there. I can get to a /dev/bus/usb node easily enough, but I'm a bit lost from there. What would be the best route to perform this mapping? Alternatively, a way to get the /dev/ttyUSB device node for a /dev/bus/usb node would work as well, since it gets me the same result.

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• Accelerometer API for Laptops

  - by FreshCode

  Most IBM (and some Dell) laptops have built-in accelerometers to stop any moving parts during a sudden fall, but I was unable to find a standardised Windows API to access this data. I assume that each manufacturer would provide a driver to interface with the sensor. Which popular laptop brands come standard with accelerometers accessible from an API and which libraries should I use to access the data? Does an API* exist to abstract away the differences between different manufacturers? I am aware of the Windows 7 Sensor API, but I would like support for XP and earlier.

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• Does throwing an exception in an EvalFunc pig UDF skip just that line, or stop completely?

  - by Daniel Huckstep

  I have a User Defined Function (UDF) written in Java to parse lines in a log file and return information back to pig, so it can do all the processing. It looks something like this: public abstract class Foo extends EvalFunc<Tuple> { public Foo() { super(); } public Tuple exec(Tuple input) throws IOException { try { // do stuff with input } catch (Exception e) { throw WrappedIOException.wrap("Error with line", e); } } } My question is: if it throws the IOException, will it stop completely, or will it return results for the rest of the lines that don't throw an exception? Example: I run this in pig REGISTER myjar.jar DEFINE Extractor com.namespace.Extractor(); logs = LOAD '$IN' USING TextLoader AS (line: chararray); events = FOREACH logs GENERATE FLATTEN(Extractor(line)); With this input: 1.5 7 "Valid Line" 1.3 gghyhtt Inv"alid line"" I throw an exceptioN!! 1.8 10 "Valid Line 2" Will it process the two lines and will 'logs' have 2 tuples, or will it just die in a fire?

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• selective backup script in bash

  - by Sake

  Hi, I've been using this simple command (that's all I can do :) to backup the whole tree from my user data in NAS server for a year. cp -r /STORAGE /BACKUP-STORAGE/YYYY-MM-DD Unfortunately, after a year of service. My user start filling the spaces with lot of photo and cliparts (jpg, gif, bmp) And that start to make my backup process get much slower. The space is also a big issue. Now I no longer have enough space for a week-long daily backup set. I think I want to change from backup everything to backup only non-image data. How can I exclude jpg, gif, and bmp from the backup ? It's quite easy with DOS XCOPY command, but I really have no idea how to do that in bash. Thanks

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• How do you use the LINQ to SQL designer to generate accessor methods for subclasses?

  - by Pricey

  Above is the LINQ to SQL designer view for my data context. Below is the relevant code: public System.Data.Linq.Table<ActivityBase> ActivityBases { get { return this.GetTable<ActivityBase>(); } } ... [Table(Name="dbo.Activities")] [InheritanceMapping(Code="1", Type=typeof(ActivityBase), IsDefault=true)] [InheritanceMapping(Code="2", Type=typeof(Project))] [InheritanceMapping(Code="3", Type=typeof(ProjectActivity))] [InheritanceMapping(Code="5", Type=typeof(Task))] [InheritanceMapping(Code="4", Type=typeof(Activity))] public abstract partial class ActivityBase : INotifyPropertyChanging, INotifyPropertyChanged { ... Is there a way to generate accessor methods for the subclasses as shown in the inheritance mapping above (Project, Task, etc...) without doing it manually? I added them manually but then a change in the designer overwrites any manual changes. Am i doing this wrong? should I not be making accessors for the sub classes? filtering from ActivityBase seems worse to me. Thanks for any help on this.

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• ASP.NET MVC 2 DropDownList not rendering

  - by Tomaszewski

  Hi, so I don't understand what I am doing wrong here. I want to populate a DropDownList inside the master page of my ASP.NET MVC 2 app. Projects.Master <div id="supaDiv" class="mainNav"> <% Html.DropDownList("navigationList"); %> </div> MasterController.cs namespace ProjectsPageMVC.Controllers.Abstracts { public abstract class MasterController : Controller { public MasterController() { List<SelectListItem> naviList = new List<SelectListItem>(); naviList.Add(new SelectListItem { Selected = true, Text = "AdvanceWeb", Value = "http://4168web/advanceweb/" }); naviList.Add(new SelectListItem { Selected = false, Text = " :: AdvanceWeb Admin", Value = "http://4168web/advanceweb/admin/admindefault.aspx" }); ViewData["navigationList"] = naviList; } } } ProjectsController namespace ProjectsPageMVC.Controllers { public class ProjectsController : MasterController { public ActionResult Index() { return View(); } } } The DropDownList is not even showing up in the DOM and I am at a loss as to what I am doing wrong.

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• 2 HP Procurve 4000M switches and Comcast SMC Gateway

  - by Cole Tierney

  We've got 2 HP Procurve 4000M switches joined by a trunk. Switch 1 is connected to a Cisco 2600 router which is connected to a T1. Internet traffic for hosts on switch 2 must pass through the trunk to switch 1. We're now switching to Comcast who's given us 4 port SMC router. I would like to connect each switch to the comcast router to reduce traffic on the trunk, but I don't want to create a loop. The switches support spanning tree protocol, but I don't know how this would work with the comcast router. Would a triangle network like this work? Thanks for any tips.

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• In database table design, how does "Virtual Goods" affect table design -- should we create an instan

  - by Jian Lin

  When we design a database table for a DVD rental company, we actually have a movie, which is an abstract idea, and a physical DVD, so for each rental, we have a many-to-many table with fields such as: TransactionID UserID DvdID RentedDate RentalDuration AmountPaid but what about with virtual goods? For example, if we let a user rent a movie online for 3 days, we don't actually have a DVD, so we may have a table: TransactionID UserID MovieID RentedDate RentalDuration AmountPaid should we create a record for each instance of "virtual good"? For example, what if this virtual good (the movie) can be authorized to be watched on 3 devices (with 3 device IDs), then should we then create a virtual good record in the VirtualGoods table, each with a VirtualGoodID and then another table that has VirtualGoodID DeviceID to match up the movie with the DeviceIDs? We can also just use the TransactionID as the VirtualGoodID. Are there circumstances where we may want to create a record to record this "virtual good" in a VirtualGoods table?

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• problems with Apache on Snow Leopard

  - by Hristo

  I kind of screwed up the Apache "stuff" on my Mac. Usually when I visit http://localhost/, I would see the "It Works!" but now it just lists the directory and files inside /Library/WebServer/Documents. When I try to stop/start/restart the server with sudo apachectl stop, I get: httpd: Syntax error on line 68 of /etc/apache2/httpd.conf: Cannot load /usr/libexec/apache2/mod_disk_cache.so into server: dlopen(/usr/libexec/apache2/mod_disk_cache.so, 10): Symbol not found: _apr_file_info_get$INODE64\n Referenced from: /usr/libexec/apache2/mod_disk_cache.so\n Expected in: flat namespace\n in /usr/libexec/apache2/mod_disk_cache.so I don't want to do the MacPorts install, I tried it earlier but... I just want to do it via source code with the usual ./configure, make, make install. Any ideas on how to get this working? Is there a way to totally remove Apache and then reinstall a fresh version? Thanks, Hristo

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• problems with Apache on Snow Leopard

  - by Hristo

  I kind of screwed up the Apache "stuff" on my Mac. Usually when I visit http://localhost/, I would see the "It Works!" but now it just lists the directory and files inside /Library/WebServer/Documents. When I try to stop/start/restart the server with sudo apachectl stop, I get: httpd: Syntax error on line 68 of /etc/apache2/httpd.conf: Cannot load /usr/libexec/apache2/mod_disk_cache.so into server: dlopen(/usr/libexec/apache2/mod_disk_cache.so, 10): Symbol not found: _apr_file_info_get$INODE64\n Referenced from: /usr/libexec/apache2/mod_disk_cache.so\n Expected in: flat namespace\n in /usr/libexec/apache2/mod_disk_cache.so I don't want to do the MacPorts install, I tried it earlier but... I just want to do it via source code with the usual ./configure, make, make install. Any ideas on how to get this working? Is there a way to totally remove Apache and then reinstall a fresh version? Thanks, Hristo

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• java: decoding URI query string

  - by Jason S

  I need to decode a URI that contains a query string; expected input/output behavior is something like the following: abstract class URIParser { /** example input: * something?alias=pos&FirstName=Foo+A%26B%3DC&LastName=Bar */ URIParser(String input) { ... } /** should return "something" for the example input */ public String getPath(); /** should return a map * {alias: "pos", FirstName: "Foo+A&B=C", LastName: "Bar"} */ public Map<String,String> getQuery(); } I've tried using java.net.URI, but it seems to decode the query string so in the above example I'm left with "alias=pos&FirstName=Foo+A&B=C&LastName=Bar" so there is ambiguity whether a "&" is a query separator or is a character in a query component. edit: just tried URI.getRawQuery() and it doesn't do the encoding, so I can split the query string with a "&", but then what do I do? Any suggestions?

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• Detect (and remove) non-ascii characters from files

  - by Mawg

  Something similar to this question, but that ended up with a programming answer. I am looking for a ready-made Windows application to recurse a directory tree and .. at the very least, notify me of all files which contain non-ascii characters It would be nice if it would also do any of the following (in no particular order) Let me specify which file extensions to scan Show the file contents, with the non-ascii characters highlighted Automagically remove such characters, or ... Let me launch an editor to remove them manually Know you of such a best? Thanks a 1,000,000 in advance

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• How to open the Quota Entries list for a given drive from a shortcut or command line?

  - by Indrek

  Is it possible to open the Quota Entries list for a given drive from a shortcut or the command line in Windows? And if so, how? I'm not talking about managing quota entries from the command line (fsutil quota), I'm looking for a way to get directly to the Quota Entries GUI rather than going through My Computer → right-click on a drive → Properties → Quota tab → Show Quota Settings → Quota Entries... I managed to find out (using Process Explorer) that the backend process is dllhost.exe, and the DLL in question should be dskquoui.dll, so it should be possible to run it directly with rundll32.exe, but I'm not sure of the exact syntax. Any ideas?

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• How can I get rid of / hide :2eDS_Store files on my linux netatalk server?

  - by Douglas Mayle

  I'm running a netatalk server process on my linux server that serves files up to Mac client machines. Whenever you use Mac's Finder to access foreign filesystems over netatalk, it creates '.DS_Store' files to store information about the folder. Normally, these files would be hidden by default, and I wouldn't care. Unfortunately, netatalk doesn't allow access to local hidden files, so when the Mac writes and reads these, it renames them :2eDS_Store on the local filesystem. When you have a deep tree, you end up with these littered all over the place, and other Windows and Linux clients have to deal with them. How do I make these available to Mac clients and hidden from everyone else?

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• Word 2013: Get the page number for the previous page

  - by Mike Anthony

  I'm trying to accomplish something very simple in Word 2013, but the feature does not seem to be available, nor can I work it out with field codes. I simply want to include, on multiple pages, "continued from page n". In terms of field codes, I have tried this: { = PAGE - 1 \* MERGEFORMAT } It just tells me that PAGE is not a defined bookmark. Is there any way that this can be done? Edit: Per documentation I found somewhere, I also tried this - but with no luck: { = { PAGE } - 1 } This just threw Syntax Error, { back, which leads me to assume that it's incompatible with newer versions of Word.

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• XAMPP pointing a file outside root folder

  - by Ravi

  I am using XAMPP for first time in Mac. Running out problems accessing other than root folder(htdocs).when I am placing my web application inside htdocs with default httpd.conf file it works when I try to point my web application url in httpd.conf it throws error I am aware that to modify the root folder I need to do changes to my XAMPP/etc/httpd.conf file With Default XAMPP MAC Settings, I am trying to change Server root,Document root and Directory in XAMPP/etc/httpd.conf file the following ServerRoot "/Users/ravi/Documents/Development/Backbone/backboneboilerplate" DocumentRoot "/Users/ravi/Documents/Development/Backbone/backboneboilerplate" <Directory /> Options FollowSymLinks AllowOverride All Order deny,allow Deny from all </Directory> <Directory "/Users/ravi/Documents/Development/Backbone/backboneboilerplate"> Options Indexes FollowSymLinks AllowOverride All Order allow,deny Allow from all </Directory> its throwing error when trying to start XAMPP httpd: Syntax error on line 54 of /Applications/XAMPP/xamppfiles/etc/httpd.conf: Cannot load /Users/ravi/Documents/Development/Backbone/backboneboilerplate/modules/mod_authn_file.so into server: cannot create object file image or add library

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• Spring: PropertyPlaceHolderConfigurer to set values for non-string/integer properties

  - by babyangel86

  Hi, All the examples I have seen where the PropertyPlaceHolderConfigurer is used seem to be setting simple values like Strings and ints. How do you use the PPC to set the values of classes. E.g. If i had a class signature Source(String name, DistributionSample batch, DistributionSample delay) How would I go about setting the batch and delay properties. There is also a small catch. DistributionSample is an abstract class. On the bright side, The class that is using the propertyPlaceHolder knows the beanName of the "Solid" class that needs to be instantiated. Any help would be much appreciated.

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• Creating yum repo

  - by luckytaxi

  I followed this link on how to create my own yum repository for base install and update purposes. If you notice, why would I need a 5 folder on top of 5.4? My installation at the moment is all 5.4, so when I ran "yum update" it wanted to go to http://domain.com/5/... instead of picking up the 5.4 directory. Is 5 basically 5.4 w/ the most updated packages for that tree? meaning, if 5.5 comes out, 5 would be the latest and greatest and if I wanted to track 5.4, I would still need a 5.4 folder to track changes with?

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• AD Custom Attribute with unique value

  - by Zilog

  I have custom AD attribute added to my AD schema. Attribute's syntax is Unicode String. It is added to user class and the purpose of it is to store user ID of corporate ERP system. Problem is, that I can have two or more user objects with the same value stored in that attribute, which is something that I would like to avoid. Is there a way to configure AD attribute so it is unique within the domain boundary? (The same behavior as SAMAccountName attribute.) i.e : If there already exists user object in AD with this attribute set to "JSmith" and I try to set that attribute with the same value for another user, Direcory Services will refuse to update that object and give me "already exists" error. Domain functional level is windows 2003.

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• sendmail: how can I restrict access to clients that only have a valid certificate?

  - by lxg

  I want to reject all connections that don't present a valid SSL/TLS certificate. First of all is the access db file the correct one to be changing? I have already tried using the basic rule given in the documentation CertIssuer:/C=US/ST=California/O=endmail.org/OU=private/CN= Darth+20Mail+20+28Cert+29/[email protected] RELAY This will obviously need a rule afterward to filter and reject all that don't present the cert? Does anyone have any pointers as to what syntax I should use? wildcards? lxg

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• How to hide GetType() method from COM?

  - by ticky

  I made an automation Add-In for Excel, and I made several functions (formulas). I have a class which header looks like this (it is COM visible): [ClassInterface(ClassInterfaceType.AutoDual)] [ComVisible(true)] public class Functions {} In a list of methods, I see: ToString(), Equals(), GetHashCode() and GetType() methods. Since all methods of my class are COM visible, I should somehow hide those 4. I succeeded with 3 of them: ToString(), Equals(), GetHashCode() but GetType() cannot be overriden. Here is what I did with 3 of them: [ComVisible(false)] public override string ToString() { return base.ToString(); } [ComVisible(false)] public override bool Equals(object obj) { return base.Equals(obj); } [ComVisible(false)] public override int GetHashCode() { return base.GetHashCode(); } This doesn't work: [ComVisible(false)] public override Type GetType() { return base.GetType(); } Here is the error message in Visual Studio when compile: ..GetType()': cannot override inherited member 'object.GetType()' because it is not marked virtual, abstract, or override So, what should I do to hide the GetType() method from COM?

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• Setting multiple Apache2 VirtualHosts with the same DocumentRoot?

  - by sobi3ch

  I'm trying to accomplish something like this DocumentRoot /www/_offline.com <VirtualHost *:80> ServerName example1.com ServerAlias www.example1.com </VirtualHost> <VirtualHost *:80> ServerName example2.com ServerAlias www.example2.com DocumentRoot /www/_offline.com </VirtualHost> Is it possible to have ONE documentRoot for different domains? VirtualHost configuration: wildcard NameVirtualHosts and _default_ servers: *:80 is a NameVirtualHost default server localhost (/etc/apache2/sites-enabled/000-default:1) port 80 namevhost localhost (/etc/apache2/sites-enabled/000-default:1) port 80 namevhost aa.atd (/etc/apache2/sites-enabled/all-phoenix-domains:2) port 80 namevhost atd.atd (/etc/apache2/sites-enabled/all-phoenix-domains:13) port 80 namevhost test (/etc/apache2/sites-enabled/test:1) Syntax OK

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• Removing Eclipse completely

  - by Abhishek Bhandari

  I had an Eclipse - Galileo working fine . Suddenly it started to hang till death(eclipse crashes) when I tried to open a DB2 table form DbViewer Plugin's Db tree View . I tried many stuffs , replacing DbViewer plugin and other memory stuffs . This happens only with DBViewer. So I unziped another eclipse in another directory . But it opens the same settings,plugins and workspace of the previous eclipse .I removed the previous eclipse even the same problem exists. In simple word. How to remove eclipse completely from Windows 7?

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• Is there a way to set access to WMI using GroupPolicy?

  - by Greg Domjan

  From various documentation it appears that to change WMI access you need to use WMI to access the running service and modify specific parts of the tree. Its kind of annoying changing 150,000 hosts using the UI. And then having to include such changes in the process of adding new hosts. Could write a script to do the same, but that needs to either connect to all those machines live, or be distributed for later update say in an startup/install script. And then you have to mess around with copying binary SD data from an example access control. I've also found you can change the wbem/*.mof file to include an SDDL but I'm really vague on how that all works at the moment. Am I just missing some point of simple administration?

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• Grant users access to mysql with a dash in the database name

  - by Matt

  Unfortunately, I have a database name with a dash in it. How do I grant access to that database as mysql reports a syntax error. e.g. grant select,insert,update,delete on astpp.* to 'portal'@'localhost' identified by 'Ab7g12Xh35' with grant option; works, but grant select,insert,update,delete on astpp-eth01.* to 'portal'@'localhost' identified by 'Ab7g12Xh35' with grant option; Does not. Neither does: grant select,insert,update,delete on 'astpp-eth01'.* to 'portal'@'localhost' identified by 'Ab7g12Xh35' with grant option;

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