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• How to merge several detached signatures from different people into one?

  - by Petr Pudlák

  A group of people wants to publish a file and they all want to digitally sign the file as different recipients of the file will have different chains of trust. For simplicity, it's desired that there is only one detached signature file with all the signatures, so that the recipients don't need to check them one by one: foo.tar.gz foo.tar.gz.sig However, for security reasons, every person needs to perform the signing on their computer, it's not possible to create the combined signature by having multiple private keys on one computer and performing the operation with one command. Is it possible with GPG to somehow merge detached signatures of a file from multiple participants?

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• Ubuntu Software Centre is gone! How can I get it back?

  - by Mochan

  Right. I am having MAJOR issues. (It would be much appreciated if you would solve them for me! Check my profile for open questions...) Following an answerer... who sorry to say... didn't give a great answer because it was just a graphical way of doing what I had already done - suggested I purge a library. Turns out that library controlled the Advanced Packaging Tool (apt), Ubuntu Software Centre and the repositories. Not a great tool to mess with. While trying to purge the library, it came up with 'Removing MyUnity.. Removing x... Removing x... Removing Ubuntu Software Centre... Removing X... Removing apt..." I quickly recognized and force shut-down my system. But I guess it was too late. So... well, plainly put - how do I get it back?!

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• migrating storage to a different controller

  - by bellocarico

  Hello, I've just purcheased a couple of adaptec controller (2405/5405) for my ESXi 4.0 U1 servers. Currently ESXi and a couple of VMs are hosted on single sata boot disk connected to a nvidia on board non-RAID controller. I know that it's possible to migrate from single disk to RAID 1 with adaptec and I'm pleased with that, but I'm not sure if ESXi has already the right drivers installed/loaded for this controller. Is there any way I can check this? Is ESXi clever enough to recognize the new hardware and load the right module? Thanks

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• Domain user periodically can't login, but only temporarily?

  - by Josh

  Ok, this is a strange one that I'm having trouble replicating letting alone solving. I have a user who uses two computers (both XP sp3) on the domain with a roaming profile. She has no problems on her personal computer but occasionally needs to use a shared computer. On this shared computer she is sometimes (~once a week) unable to login with the error message "Username or password incorrect. Check username password and domain and try again." I've checked when this happens and her username and password are indeed entered correctly. Now the strange part - if someone else logs in to the computer (which so far always works) and then logs out she is able to log in after that. This problem began after a recent and long overdue password change. I've tried to replicate this problem after a reboot, or after another user logs out to no avail. Any suggestions on troubleshooting or replicating this one? Anyone experienced something similar?

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• http request terminating early

  - by spiderplant0

  I noticed that on some of my sites, images were occasionally not getting downloaded fully. After a bit of investigation it appears that it is not restricted to images - .css, .js etc were also occasionally terminating early. The faults appear to be random. When I use the debug/proxy tool Fiddler2 reports that fewer bytes have been received than were requested. Firebug reports "Image corrupt or truncated". Obviously this is mainly a concern between me and my hosting company. However despite many emails they have not been able to get to the bottom of it. Transfer to another hosting company is obviously an option but is really a last resort. Has anyone seen this kind of thing before or can anyone suggest what might be causing it. Or any apache setting or something that I can ask them to check out. Will apache log this kind of error - they havent been able to provide me with any logs, but if I know exactly where things have been logged, maybe I can prompt them in to action.

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• Installed IE8 & SP3 on XP now I can't HTTPS from any browser.

  - by Kevin

  The computer is Windows XP Professional SP3 with IE8. On the Tools Options Connections the "Settings" is GRAYED OUT (I am an admin on the machine) Any browsing of https:// addresses results in IE displaying the following: "this program cannot display the web page" After installing an alternate browser and trying the same https:// address I get a similar error message. I have tried using Compatibility View Settings to for all web pages and this has no effect on the problem. HTTP addresses work fine, I can PING sites such as google.com without issue. Question: What could be preventing me from getting at the settings to check to see if I'm using a proxy? What else could be preventing HTTPS access?

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• Java login through LDAP

  - by Salda

  I am starting to write an application for our office and the first step is authentication through LDAP where all users already exist. Everything I need is a code in Java to check if the pair <nick,password> is right. Google found me many links, but I think that I will find here the most sofisticate, short and up to date solution (I don't want to read all articles like 2 whole days to do something so simple). I have written many dkBs of code in C++, but in Java I am total noob and I haven't coded anything with LDAP yet so try to be simple if speaking in Java and LDAP terms if possible.

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• Setting max_allowed_packet for mysql on solaris 10

  - by Drakonen

  I want to set the max_allowed_packet setting for mysql (5.1.31) which is running on Solaris 10. Unfortunately mysql does not seem to read the my.cfg. I tried to place it in /etc/mycfg, /opt/mysql/mysql/data/my.cfg and in /opt/mysql/mysql/support-files/my.cfg. At each of these locations, the max_allowed_packet does not get set when i check with: `select @@max_allowed_packet;` When I start mysqld as such it does set the setting: # su mysql $ mysqld --defaults-file=/etc/my.cfg This are the contents of my.cfg: [mysqld] max_allowed_packet = 50M How can i make mysql read the config when i start it with the SMF tools?

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• Welcome to the Java Training Beat!

  - by tmcginn

  We are a group of dedicated training developers for Java, located in the US, India, and now Mexico. In this blog we will announce new training content and events that might be of interest to our readers. In this first installment of the Java Training Beat, I would like to introduce three new Oracle By Example (OBE) modules I recently released and posted to the Oracle Online Learning Library. Creating a Simple Java Message Service (JMS) Producer with NetBeans and GlassFish - covers how to create a simple text message producer with NetBeans 7 and GlassFish. Creating Java Message Service (JMS) Resources in WebLogic Server 12c - covers how to create JMS resources using the console and WebLogic Server 12c. With this tutorial, you can replicate the results of the first tutorial in WebLogic. Creating a Publish/Subscribe Model with Message-Driven Beans and GlassFish Server - covers how to create a publish/subscribe application using JMS. This tutorial includes a short case study that includes a JSF front-end application that sends a hotel reservation request object to the server as a MapMessage. Hope you find these useful!  And do check out the Online Learning Library - we have a wide range of additional content posted and more being added every month!

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• The Java Tour 2014

  - by Tori Wieldt

  The Java Tour 2014 is series of events (over 75 and counting!) for Java Developers held around the world. The Oracle Events team is producing a Java Tour in coordination with the Oracle Technology Network (OTN) and Java User Groups (JUGs).  Oracle Java Evangelists and Java Champions provide top-notch content and chance to network with other developers.  The Java Tour 2014 allows local, regional-specific Java topics to be addressed both by Oracle and the Java community. You'll hear the latest on Java 8, Java EE, and Java Embedded. Check out the Java Tour 2014 page for cities and dates.  If you would like to host your own event focused on Java 8, you can order a kit of materials. If the tour doesn't make it to your city, OTN and Java Evangelists provides lots of online content: -OTN Technical Articles -YouTube Java Channel -Facebook I <3 Java -NightHacking streaming and replays -Java Forums for questions and conversation  The tour culminates in the biggest Java event of the year, JavaOne. See you in person or online!

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• Send request body data when running siege

  - by qui

  I am trying to use the command line utility Siege to load test a service. The service recieves json in the request body via a POST. I have a file called example-data.json with the json inside. I will eventually turn this into a tiny service which creates random json for testing, but this should do for now I have another file called hit-qa.siege with http://www.qa-url.com POST < example-data.json and i try and run siege -c10 -d1 -r1 -f ops/perf/hammer-dev.siege When I check the logs of the service, it is not recieving anything in the request body. My googles have been fruitless, does anyone know how to accomplish this?

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• Should I use subdomains or subfolders for my user groups?

  - by bilygates

  Hello, I run a photography website where each user has its own subdomain (i.e. user.site.com). I'm thinking of adding user groups but I'm unable to decide if I should also associate a separate subdomain or simply a subfolder for each group: Subfolders (www.site.com/groups/my-group) Pros: Easier to maintain from a tehnical p.o.v. Cons: Harder to memorize. The URLs can get really long (www.site.com/groups/my-group/albums/my-album/) Subdomains (my-group.site.com) Pros: Easier to memorize. Shorter URLs. One might have the impression that such an URL is somewhat more "independent" from the main site. Cons: Group and user names belong to the same name space, so we need to check for collisions when creating a new user/group. One cannot determine the content of the page by only reading the URL: Is x.site.com a user page or a group page? What's your opinion on the matter? I should note that DeviantArt.com uses the 2nd option (that's where I got the idea). Thank you in advance!

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• Dell XPS M1330 - power cable pulled by accident and now it won't turn on

  - by jim

  I have a similar problem to what has been posted on this site about when I plug in my Laptop adapter the green light comes on as expected; but, when I plug it into the laptop it goes out. In my case, I know it's not the adapter because I have 2 and they both experience the same issue. I'm quite certain the problem is a short in the laptop. I was using the laptop today and the power cord was pulled out by accident and now i'm into this predicament. How or what do I check on the laptop to isolate the problem? Thanks!

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• How do you delete an iFolder from iFolder admin interface

  - by cheshirekow

  There are only two buttons at the bottom of the screen "enable" and "disable". When I check the box next to an iFolder one of them is lit (depending on what the state of the folder is)... but there is no button to delete the folder (as it seems there should be from the documentation). There is a delete button in the "orphaned" tab but how do you "orphan" an iFolder? I'm logged in to the admin interface as admin, who is currently the owner of the folder I wish to delete.

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• How can I easily confirm in Linux that two separate directories have the exact same contents?

  - by Mike B

  CentOS 5.x Mq question seemed similar to this one but I wasn't sure... I have two servers (completely isolated from each other), each with a directory and sub-directories that should have the same exact contents. For example the directory layout could be something like: SERVER A - /opt/foo/foob/1092380298309128301283/123.txt /opt/foo/foob/5094380298309128301283/456.txt /opt/foo/foob/5092380298309128301283/789.txt /opt/foo/foob/1592380298309128301283/abc.txt SERVER B - /opt/foo/foob/1092380298309128301283/123.txt /opt/foo/foob/5094380298309128301283/456.txt /opt/foo/foob/5092380298309128301283/789.txt /opt/foo/foob/1592380298309128301283/abc.txt Ideally I'd like a way to do a recursive check and have something confirm that everything matches. I also want to avoid using any third-party tools. Any ideas?

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• Crash when trying to detect touch

  - by iQue

  I've got a character in a 2D game using surfaceView that I want to be able to move using a button (eventually a joystick), but my game crashes as soon as I try to move my sprite. This is my onTouch-method for my steering button: public void handleActionDown(int eventX, int eventY) { if (eventX >= (x - bitmap.getWidth() / 2) && (eventX <= (x + bitmap.getWidth()/2))) { if (eventY >= (y - bitmap.getHeight() / 2) && (y <= (y + bitmap.getHeight() / 2))) { setTouched(true); } else { setTouched(false); } } else { setTouched(false); } And if I try to put this in my update-method: public void update() { x += (speed.getXv() * speed.getxDirection()); y += (speed.getYv() * speed.getyDirection()); } The sprite moves on its own just fine, but as soon as I add: public void update() { if(steering.isTouched()){ x += (speed.getXv() * speed.getxDirection()); y += (speed.getYv() * speed.getyDirection()); } the game crashes. Does anyone know why this is or how to fix it? I cannot figure it out. I'm using MotionEvent.ACTION_DOWN to check if the user if pressing the screen.

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• How to know if a file has 'access' monitor in linux

  - by J L

  I'm a noob and have some questions about viewing who accessed a file. I found there are ways to see if a file was accessed (not modified/changed) through audit subsystem and inotify. However, from what I have read online, according to here: http://www.cyberciti.biz/tips/linux-audit-files-to-see-who-made-changes-to-a-file.html it says to 'watch/monitor' file, I have to set a watch by using command like: # auditctl -w /etc/passwd -p war -k password-file So if I create a new file or directory, do I have to use audit/inotify command to 'set' watch first to 'watch' who accessed the new file? Also is there a way to know if a directory is being 'watched' through audit subsystem or inotify? How/where can I check the log of a file?

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• Are null references really a bad thing?

  - by Tim Goodman

  I've heard it said that the inclusion of null references in programming languages is the "billion dollar mistake". But why? Sure, they can cause NullReferenceExceptions, but so what? Any element of the language can be a source of errors if used improperly. And what's the alternative? I suppose instead of saying this: Customer c = Customer.GetByLastName("Goodman"); // returns null if not found if (c != null) { Console.WriteLine(c.FirstName + " " + c.LastName + " is awesome!"); } else { Console.WriteLine("There was no customer named Goodman. How lame!"); } You could say this: if (Customer.ExistsWithLastName("Goodman")) { Customer c = Customer.GetByLastName("Goodman") // throws error if not found Console.WriteLine(c.FirstName + " " + c.LastName + " is awesome!"); } else { Console.WriteLine("There was no customer named Goodman. How lame!"); } But how is that better? Either way, if you forget to check that the customer exists, you get an exception. I suppose that a CustomerNotFoundException is a bit easier to debug than a NullReferenceException by virtue of being more descriptive. Is that all there is to it?

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• Connecte RemoteApp to Exising Session

  - by Fowl

  Due to the slightly retardedness of an app I've got to run, I've got a server auto logging in on boot with the app on auto start. Remote desktop at my leisure to check on its status, etc. Gross, but it works. Now I've tried out RemoteApp which seems to work ok (ie. remotes the notification icon, balloons...) except for the fact that it creates a new session (and therefore instance of my app) - this confuses the heck out of app and it means that if I was using 'full' remote desktop I lose all my state. "Restrict each user to a single session" doesn't work. IIRC "Windows XP Mode" uses RemoteApp and it doesn't seem to have any trouble switching between modes. So how can I connect to a running app?

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• Can't get sync with SVN to work to put a directory under version control

  - by Chamster

  I've created a directory on our SVN server and added a local directory with my project to it. It got uploaded and seems to be OK. However, I didn't get those cute green (or any others) icons on the file. So I clicked on the project's directory and used "checkout". That wasn't good because I've downloaded ALL of the repository. How can I synchronize my uploaded directory with it's corresponding directory on the server? (It's probably something easy that I've forgot to check in or so...)

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• Cannot connect to internet with Clearwire modem

  - by ide

  I'm currently using a Motorola WiMAX modem (CPEi 25725) and cannot connect to the internet. I can connect to the modem at 192.168.15.1 and check its status. It says that it has good/excellent connectivity to the internet and shows all five signal bars. Additionally it has sent and received some WiMAX packets so I believe it is connected to a tower. I'm at a loss for what the problem is. Unplugging the modem, restarting it from software, and restarting my computer (Windows 7) have not helped. Windows still reports that it is not connected to the internet. Alternatively, could this be an ISP issue? I have heard that Clearwire is a not-so-reputable ISP that blocks VoIP, and I was using Skype recently. EDIT: I called Clear's tech support and apparently their network is having significant problems at the moment. Guess there's nothing an end-user can do about it.

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• Best Practice: What can be the hashCode() method implementation if custom field used in equals() method are null?

  - by goodspeed

  What is the best practice to return a value for hashCode() method if custom field used in equals are null ? I have a situation, where equals() override is implemented using custom fields. Usually it it is better to override hashCode() also using that custom fields used in equals(). But if all the custom fields used in equals() are null, then what would be the best implementation for hashCode()? Example: class Person { private String firstName; private String lastName; public String getFirstName() { return firstName; } public String getLastName() { return lastName; } @Override public boolean equals(Object object) { boolean result = false; if (object == null || object.getClass() != getClass()) { result = false; } else { Person person = (Person) object; if (this.firstName == person.getFirstName() && this.lastName == tiger.getLastName()) { result = true; } } return result; } @Override public int hashCode() { int hash = 3; if(this.firstName == null || this.lastName == null) { // <b>What is the best practice here, </b> // <b>is return super.hashCode() better ?</b> } hash = 7 * hash + this.firstName.hashCode(); hash = 7 * hash + this.lastName.hashCode(); return hash; } } is it required to check for null in hashCode() ? If yes, what should be returned if custom values are null ?

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• Finding Locked Out Users

  - by Bart Silverstrim

  Active Directory up to 2008 network (our servers are a mix of 2008, 2003...) I'm looking for a quick way to query AD to find out what users are locked out, preferably from a batch or script file, to monitor for possible issues with either user accounts being attacked by an automated attack or just anomalies in the network. I've Googled and my Google-fu has failed; I found a query off Microsoft's own knowledgebase that cites a string to use on Server 2003 with the management snap-in's saved queries (http://support.microsoft.com/kb/555131) but when I entered it, the query returned 400 users that a spot-check showed did NOT have a checkmark in the "Account is locked out" box under "account." In fact, I don't see anything wrong with their accounts. Is there a simple utility (wisesoft bulkadusers apparently uses this method behind the scenes, since it's results were also wrong) that will give a count of users and possibly their user object names? Script? Something?

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• How to install Windows on a laptop with no CDROM drive?

  - by Jason Kester

  I have an old Thinkpad X60 that I'd like to wipe clean and rebuild. Seeing as this machine doesn't have an optical drive, what's the easiest way of installing Windows XP? I have an external USB hard drive available. Would it be possible to run the install from that instead? Otherwise, what options do I have? Edit: assuming we're using a USB mass storage device... Is there a BIOS setting that I would need to change, or will it configure itself automatically? Would the USB drive need to be configured in any special manner, or would simply having a copy of the Windows CD files in a directory there be sufficient? Since the first couple answers that came in were basically "yes", I guess I didn't phrase my question correctly. I'm asking for detailed instructions on how to do this, not just a sanity check that I'm headed in the right direction. Thanks!

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• HTTPS version of page throws 404, regular HTTP appears fine?

  - by Ryan

  I'm having a strange issue with a website in IIS on Windows Server 2003. It has a valid wild card certificate on it, however when I use HTTPS on the page I get a 404 not found. Without HTTPS it shows up fine. Also, if I go to the domain root of the site using HTTP the homepage shows up, but with HTTPS it REDIRECTS ME to a totally different website installed on the same IIS server. I am quite confused. I tried giving each site a unique IP address but it didn't change anything, I also tried changing the SSL ports, no luck. This IIS is setup to run PHP also. What could I check to resolve this?

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