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• AutoSSH for a robust tunnel

  - by Budric

  I'm trying to start an ssh tunnel from A to B and have it run despite things like: period network/wifi drops on A and remote server reboot on B. My ssh tunnel starts using upstart script on A with event start on (net-device-up IFACE=eth0) I've found autossh which is supposed to handle these kinds of things, but had some trouble getting it to work. The upstart executes: autossh -M 0 -2qTN -o "ServerAliveInterval 30" -o "ServerAliveCountMax 2" -L 5678:somehost:5678 user@B However when I log into B and kill -9 that tunnel session, autossh just exits with "Connection to B closed by remote host." That's not what I expected autossh to do. Any advice on how to set this up? Any GUI service monitoring utilities out there that essentially display a green light if a service is up? Thanks.

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• Pre order Nokia Lumia 900 from AT&T for $99.99 and Walmart for $49.99

  - by Gopinath

  Nokia Lumia 900, the flagship Windows Phone OS smartphone from Nokia is available for pre-order from AT&T Stores. With a two year contract, you can grab the phone by paying $99.99 online and they are expected to ship a day or two earlier than their official launch in AT&T stores across US. Walmart in an aggressive move, is selling Nokia Lumia 900 for just $49.99 with a two year contract. So you save $50 more. Earlier in January of this year, Nokia unveiled its plans of Lumia 900 launch exclusively for American market. Nokia Lumia 900 features a 4.3 inch Clear Black display, sporting a resolution of 800 x 480 pixels, 1.4 GHz Snapdragon processor, Windows Phone 7.5 (Mango) OS, 8 megapixel rear camera with f2.2/28mm Carl Zeiss lens and dual LED flash, auto-focus and HD (720p) video recording, 1 megapixel front-facing camera for video calls, 512 MB RAM, 16 GB internal memory, 14.5 GB user memory and more. Pre-order Nokia Lumia 900 from AT&T and Walmart

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• What are the 'must know' GDB commands?

  - by Chris Smith

  I'm starting to get the hang of GDB, but everything still feels much slower than when debugging in Eclipse or Visual Studio. Are there any GDB commands you find particularly useful/productive? My life became dramatically better when I discovered: list - Display source code near the current instruction But that is still pretty basic. (And unnecessary when running GDB from Emacs.) Is there any way to do things like setup a watch window? (Print and update the result of an expression every time execution stops.)

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• Dead keys in emacs with ibus

  - by Virgile

  I've just upgraded to 13.10 and noticed that dead keys are not working anymore in emacs (a keystroke to ' leads emacs to display <dead-acute> is undefined instead of waiting to the next key. In addition, use of the compose key leads to <Multi_key> is undefined and it is impossible to use keybindings such as <M-^>. Other applications work fine as far as I can tell. A brief search on the internet suggested to (require 'isotransl) to .emacs. This solves the first issue, but not the other ones. Another possible workaround seen on the web is to launch emacs with an empty XMODIFIERS variable, as XMODIFIERS='' emacs, instead of XMODIFIERS= @im=ibus which seems to be the default in 13.10. Then everything works fine, but it looks like a kludge. Is there a way to make emacs work with ibus on this subject?

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• Software requirements specification, please help!

  - by Nicholas Chow

  For a school project, I had to create a SRS for a "fictional" application. However they did not show us what it exactly entails, and were very vague with explanations. The SRS asked of us has to have at least 5 functional requirements, 5 non functional requirements and 1 constraint. Now I have tried my best to make one however I think there are still a lot of mistakes in it. Could you all please look at it and provide me with some feedback on which parts I can improve or just tell me which parts are plain out wrong and how to make it better? (The project has a maximum of 12 pages so it is a bit long, I will post it below. FR1 Registration of Organizer FR1 describes the registration of an Organizer on CrowdFundum FR1.1 The system shall display a registration form on the website. FR1.2 The system shall require a Name, Username, Document number passport/ID card, Address, Zip code, City, Email address, Telephone number, Bank account, Captcha code on the registration form when a user registers.

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• css equivalent of table-row [closed]

  - by SpashHit

  I am trying to shift my style away from using tables to control formatting, but I haven't seen a simple css solution that does exactly the same thing as <table><tr><td>aribitrary-html-A</td><td>aribitrary-html-A</td></tr><table> All I want is to make sure aribitrary-html-A and aribitrary-html-B are aligned horizontally. I have tried various CSS concoctions using display: inline, clear: none, and float: left but they all have unwanted side-effects of moving my content around, while the table-tr solution just does what I want, regardless of what's in the arbitrary HTML, and regardless of what is in HTML that contains my table. Am I missing something?

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• How can I switch between fglrx and ati drivers?

  - by Santa Maradona

  Hi there, How can I switch between fglrx and ati (open source) drivers without uninstalling fglrx? The thing is I'm using FGLRX on a daily basis, because it's better for movies--OS driver displays annoying horizontal line while playing movies. FGLRX also does this, but it's less visible. That's only disadvantage of OS driver. When I want to plug in external monitor with different resolution than my laptop's LCD I have to use open source driver, because FGLRX can't display two different resolutions at the same time. I can uninstall FGLRX, but it's rather inconvenient to do this all the time. I've noticed that when I'm using FGLRX there is xorg.conf file and when I uninstall it, then the file is missing. So my question is how to switch between them? It'll be perfect if I could do this without restarting my computer either. I'm using Ubuntu 10.10, laptop/netbook MSI U250.

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• Better drivers for SiS 650/740 integrated video?

  - by Bart van Heukelom

  I installed Xubuntu 10.10 on an old box today and the graphical performance is horrid. According to lspci, the video card is this: 01:00.0 VGA compatible controller: Silicon Integrated Systems [SiS] 65x/M650/740 PCI/AGP VGA Display Adapter (prog-if 00 [VGA controller]) Subsystem: ASUSTeK Computer Inc. Device 8081 Flags: 66MHz, medium devsel, IRQ 11 BIST result: 00 Memory at f0000000 (32-bit, prefetchable) [size=128M] Memory at e7800000 (32-bit, non-prefetchable) [size=128K] I/O ports at d800 [size=128] Expansion ROM at <unassigned> [disabled] Capabilities: <access denied> Kernel modules: sisfb Is there a way to make it faster? Alternative drivers? The additional drivers tool shows nothing. I'm specifically interested in improving Java's Java2D rendering speed, because I'll be running a "stat screen" written in that language on it.

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• gstreamer vaapi problem

  - by squallbayu

  I installed gstreamer-vaapi from this PPA : ppa:guido-iodice/video sudo apt-get install gstreamer0.10-vaapi libgstvaapi-x11-0 libgstvaapi0 but, if I run totem movie player (via terminal) it's show this error : (totem:3383): GLib-GObject-WARNING **: g_object_set_valist: object class 'TotemScrsaver' has no property named 'reason' (totem:3383): GLib-GObject-WARNING **: value "10752000" of type 'guint' is invalid or out of range for property 'connection-speed' of type 'guint' libva: libva version 0.31.0 Xlib: extension "XFree86-DRI" missing on display ":0.0". libva: va_getDriverName() returns 0 libva: Trying to open /usr/lib/dri/nvidia_drv_video.so libva error: /usr/lib/dri/nvidia_drv_video.so init failed libva: va_openDriver() returns -1 Segmentation fault It's seems I get wrong nvidia_drv_video.so. What should I do? If I uninstall it, it's work fine, but I want to use this vaapi backend for my video decoding via GPU while I run gstreamer based apps. PS : I use Ubuntu Lucid 64bit and MSI CR 400 Notebook : Intel Core 2 Duo Nvidia 8200M

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• Triple monitor setup with an ATI Radeon 4200?

  - by Ben Clapp

  I have a relatively new Powerspec computer (i5 quad core processor, about a year or two old) and just grabbed a new relatively inexpensive ($40?) graphics card. It has 1 DVI, one VGA, and one HDMI output. I have two (different type) monitors plugged into the DVI and VGA slots, and they work great. However, I cannot seem to be able to get a third monitor in the HDMI slot to work. I can see the monitor (and monitor info) show up in display settings. However, if I try to switch the monitor to 'on' and click apply, nothing happens. Anyone have the slightest idea what the problem might be? (It's a Radeon graphics card FYI; if I remember right I think it was the Radeon 4200?)

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• How Easy is it to Code In-Built Videos?

  - by Alan Parker

  First time poster so please don't bite my head off. Basically, I'm having a site built for me and I don't really know anything about coding but I'm not too sure if I trust my web developer. I asked him recently about adding a feature where I could display built-in videos like the following page - http://www.ejot.co.uk/buildingfasteners.odl and he quoted me quite a high amount for it. I just wanted to double check with you guys whether this is a difficult feature to add in and whether it justifies a reasonable amount of money on top of what I'm already paying him. Thanks in advance for your help, Alan

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• Using Windows Previous Versions to access ZFS Snapshots (July 14, 2009)

  - by user12612012

  The Previous Versions tab on the Windows desktop provides a straightforward, intuitive way for users to view or recover files from ZFS snapshots.  ZFS snapshots are read-only, point-in-time instances of a ZFS dataset, based on the same copy-on-write transactional model used throughout ZFS.  ZFS snapshots can be used to recover deleted files or previous versions of files and they are space efficient because unchanged data is shared between the file system and its snapshots.  Snapshots are available locally via the .zfs/snapshot directory and remotely via Previous Versions on the Windows desktop. Shadow Copies for Shared Folders was introduced with Windows Server 2003 but subsequently renamed to Previous Versions with the release of Windows Vista and Windows Server 2008.  Windows shadow copies, or snapshots, are based on the Volume Snapshot Service (VSS) and, as the [Shared Folders part of the] name implies, are accessible to clients via SMB shares, which is good news when using the Solaris CIFS Service.  And the nice thing is that no additional configuration is required - it "just works". On Windows clients, snapshots are accessible via the Previous Versions tab in Windows Explorer using the Shadow Copy client, which is available by default on Windows XP SP2 and later.  For Windows 2000 and pre-SP2 Windows XP, the client software is available for download from Microsoft: Shadow Copies for Shared Folders Client. Assuming that we already have a shared ZFS dataset, we can create ZFS snapshots and view them from a Windows client. zfs snapshot tank/home/administrator@snap101zfs snapshot tank/home/administrator@snap102 To view the snapshots on Windows, map the dataset on the client then right click on a folder or file and select Previous Versions.  Note that Windows will only display previous versions of objects that differ from the originals.  So you may have to modify files after creating a snapshot in order to see previous versions of those files. The screenshot above shows various snapshots in the Previous Versions window, created at different times.  On the left panel, the .zfs folder is visible, illustrating that this is a ZFS share.  The .zfs setting can be toggled as desired, it makes no difference when using previous versions.  To make the .zfs folder visible: zfs set snapdir=visible tank/home/administrator To hide the .zfs folder: zfs set snapdir=hidden tank/home/administrator The following screenshot shows the Previous Versions panel when a file has been selected.  In this case the user is prompted to view, copy or restore the file from one of the available snapshots. As can be seen from the screenshots above, the Previous Versions window doesn't display snapshot names: snapshots are listed by snapshot creation time, sorted in time order from most recent to oldest.  There's nothing we can do about this, it's the way that the interface works.  Perhaps one point of note, to avoid confusion, is that the ZFS snapshot creation time isnot the same as the root directory creation timestamp. In ZFS, all object attributes in the original dataset are preserved when a snapshot is taken, including the creation time of the root directory.  Thus the root directory creation timestamp is the time that the directory was created in the original dataset. # ls -d% all /home/administrator         timestamp: atime         Mar 19 15:40:23 2009         timestamp: ctime         Mar 19 15:40:58 2009         timestamp: mtime         Mar 19 15:40:58 2009         timestamp: crtime         Mar 19 15:18:34 2009 # ls -d% all /home/administrator/.zfs/snapshot/snap101         timestamp: atime         Mar 19 15:40:23 2009         timestamp: ctime         Mar 19 15:40:58 2009         timestamp: mtime         Mar 19 15:40:58 2009         timestamp: crtime         Mar 19 15:18:34 2009 The snapshot creation time can be obtained using the zfs command as shown below. # zfs get all tank/home/administrator@snap101NAME                             PROPERTY  VALUEtank/home/administrator@snap101  type      snapshottank/home/administrator@snap101  creation  Mon Mar 23 18:21 2009 In this example, the dataset was created on March 19th and the snapshot was created on March 23rd. In conclusion, Shadow Copies for Shared Folders provides a straightforward way for users to view or recover files from ZFS snapshots.  The Windows desktop provides an easy to use, intuitive GUI and no configuration is required to use or access previous versions of files or folders. REFERENCES FOR MORE INFORMATION ZFS ZFS Learning Center Introduction to Shadow Copies of Shared Folders Shadow Copies for Shared Folders Client

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• How can I fix TTF fonts' ligatures (tt, ti, fi, ff, etc) in Firefox?

  - by Oli

  With certain Windows fonts there is a display issue where ligature-kerning seems to flip out and make the two letters bold. Here's a screenshot of an email using Helvetica in Firefox: As you can see, it seems to be something about the way crossed characters (t and f) connect to each other and letters like i. I've had this problem for a very long time (over multiple systems) and wondered if anybody has ever seen similar issues popping up and found a way to fix them. Note: I think this does just affect Firefox. Chrome and LibreOffice are both fine.

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• How to render RSS feed in a desktop RSS reader?

  - by Thiago Moraes

  Consider one feed like this: http://feeds.feedburner.com/codinghorror It has the entire content inside the description tag of the feed, so you don't need to access the website to read the post. Now I have the problem of creating an interface for a feed like this on a desktop client. What's the best way to render the text in a pleasant way to the user? My first thought was to parse the entire HTML as if I was a web browser, but that looks really hard to do in a satisfying way. Are there any better (faster) alternatives? Rephrasing: how a desktop rss client such as feeddamon parses the input to display it nicely? Does it have a web browser inside it?

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• Jupiter seems to break multimonitor setup

  - by Philippe

  If Jupiter is in the startup my multimonitor setup will fail. Instead of two separate desktops the monitors will be mirrored, one over the other with the smaller notebook-desktop in the larger screen: After each new log-in I have to reset the Display settings in the "System Settings..." dialogue to two not mirrored screens, the changes don't seem to be saved. Given the the entry from xsession-errors /usr/lib/jupiter/scripts/resolutions: line 42: /var/jupiter/available_resolutions_LVDS: Permission denied I assumed that it's coming from Jupiter. Infact, if Jupiter is removed as startup application the desktop settings are fine. Any idea how to solve that issue?

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• monitor screen dead.....not even shows bios screen

  - by megatronous

  Re: /host/ubuntu/disks/root.disk does not exist :( ALERT! /host/ubuntu/disks/root.siak does not exist. Dropping to a shell! BusyBox v1.15.3 (Ubuntu 1:1.15.3-1ubuntu5) built-in shell (ash) (initramfs) alll thought the above problem was solved my issue now is..when i booted my pc again after this solving this to solve the above problem i had pressed e in the grub menu then corrected the partition then after starting i did sudo grub-update then i made some automatic update updates then in next reboot......my screen had gone blank .... and i am not even able to see bios screen....in the start ...the monitior just stays blank..................i have even tried disconnectiong my hard disk but still not able to get the display......solution required ....urgently.....

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• Date Compare Validator Control ASP.NET

  - by Sahanr

  Compare two input dates to avoid invalid dates. In this example I have created two textboxes and namded as "TextBoxSeminarDate" and "TextBoxBookingDeadline". Booking deadline date must be before date to the Seminar date. Therefore I used Operator as "LesThanEqual". I have validated "TextBoxBookingDeadline" value comparing with the "TextBoxSeminarDate" value as follow.   <asp:CompareValidator ID="CompareValidatorBookingDeadline" runat="server" ControlToCompare="TextBoxSeminarDate" ControlToValidate="TextBoxBookingDeadline" Display="Dynamic" ErrorMessage="Please check the seminar date and select appropriate date for booking deadline" Operator="LessThanEqual" Type="Date"  ValueToCompare="<%= TextBoxSeminarDate.Text.ToShortString() %>">*</asp:CompareValidator> The important thing is "ValueToCompare" property of the compare validator. Here I have assined it to the value of the TextboxSeminarDate and then compered it with the booking deadline date.  

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• Developing a php system that tracks other websites analytics

  - by CodeCrack

  I want to develop a PHP website feature where users sign up, get a javascript snippet code that display an image on their site, and let's me track the number of visitors, unique hits, clicks and average visitor duration on their page. Is that something that should be done with some open source analytic software such as http://piwik.org/ or it's pretty doable on your own? If I had to do it myself from scratch, I would use image/pixel as a way to track the visit, drop a cookie with javascript snippet to track uniques, track clicks based on image click and redirect, and not sure about the bounce rate. Any thoughts or opinions are welcome.

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• The menu in the titlebar disappears in 12.10

  - by kinsago

  When running various programs (as I write this, with Chrome & Evolution) I move my mouse to the title bar to access the menu. The menu only seems to appear if I target the buttons to the left. When I move the mouse off the buttons (but still on the title bar) to select a menu then most times the menu disappears. It would seem this only happens on of my displays (of which I have 2) and it is the display that has the unity menu on it. Any ideas?

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• Why do I have man pages of commands that don't exist?

  - by Robert Vila

  What is panel-test-applets for?? I don't know. But if I want to know I type: $ whatis panel-test-applets The answer is: panel-test-applets (1) - display installed applets I have the man page too, and I can read it: $ man panel-test-applets But there is no program with that name. Maybe the command is not very useful, but is its man page more useful? Does someone know how to install that program or what is its man page for when you cannot execute the program? I can't even execute the command: $ panel-test-applets nor $ panel-test-applets --help which is the only thing its man page talks about!!

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• HTG Explains: Why Do Hard Drives Show the Wrong Capacity in Windows?

  - by Chris Hoffman

  If you’ve ever purchased a computer with a hard disk capacity of 500 GB and opened Windows Explorer only to find that its capacity looked more like 440 GB, you may be wondering where all those gigabytes went. There are several reasons Windows could display the wrong amount of available space, from invisible shadow files, formatting overhead, and hidden recovery partitions to misleading (though technically accurate) storage capacities advertised by hard drive manufacturers. Image Credit: Norlando Pobre HTG Explains: Why Do Hard Drives Show the Wrong Capacity in Windows? Java is Insecure and Awful, It’s Time to Disable It, and Here’s How What Are the Windows A: and B: Drives Used For?

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• How to detect if a placement would be empty (Doubleclick for Publishers)?

  - by EricSchaefer

  I want to use DFP for my ads. To display an ad I am calling GA_googleFillSlot(). My understanding of this is, that this function injects the ad code at the position where the JS call is placed. How can I detect if the placement is empty, e.g. no banner code will be injected because there is currently no banner. I need to know because the surrounding html needs to be adapted. Any ideas? Edit: Alternatively, is it possible to alter the injected html elements? DFP injects a div with id="google_ads_div_$PLACEMENT_ID". Is it possible to add a class attribute?

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• Windows Phone 7 UserExtenedProperties opinion...

  - by webdad3

  I was thinking of a way to some how connect my phone user base to my site user base. Right now if an item gets added to the site via the phone the userId is generic and the site displays it as SmartPhoneUser. I was thinking it might be cool to display the unique phone id by using the UserExtenedProperties, however, after reading Nick Harris's blog about it I'm thinking it may not be a good idea as I don't want users to think I'm up to anything nefarious. So I'm wondering if there are any suggestions out there on how to accomplish this task. Right now my site uses the JanRain module that allows multiple logins from other sites (Facebook, Yahoo, Google etc.). Any thoughts on how I can accomplish what I want to do without using the ExtendedProperties?

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• Please help ubuntu or any other linux os is not booting from cd or usb

  - by Amith

  I will tell you the whole story,one night when i was using KDE on Ubuntu 10.10 Kwin crashed then i shut down the os next day when i booted it the display came completely garbled and i went to safe graphics mode ,it worked and in reinstalled the Nvidia drivers and then restarted .Then immediatly, It said No init found Busybox XX.XX then I thought ill do a fresh install I inserted the ubuntu cd provided to me by Canonical.When i pressed 'try ubuntu without installing' instead of the graphic boot screen i saw.Ubuntu 10.10 in regular text and a progress bar few seconds after that the screen was flooded with error messages first alot of white then red.I then went to my win7 installation and saw a website which told me to find a Ext3 reader and format the ubuntu partition and the swap.I did that and when i restarted. GRUB configuration not found grub> Then it took my win 7 ERD and restored 7's bootloder Xp and 7 were working i put in the livecd again,Same error,Now usin my seven,Please help geeks,Ive even tried Knoppix,Fedora,Debiane.t.c they wont boot and i want to retain my win 7 and winxp partitions,I really miss linux.

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• Adobe-Flash-plugin freezes when skipping ahead

  - by piedro

  I am using Firefox 7 and the new official Adobe Flash 64-bit plugin from the Ubuntu Partner repository. It's the adobe-flash package. It works nicely on the first look but when I try to skip ahead in any YouTube video (by clicking on the video progress bar) sound will go on but the video simply freezes at the position it was just before skipping. This is really annoying because I really don't want to watch every video full length. Now maybe there's cleanup work to do? I removed every Flash-related package from the package manager. Maybe it's Firefox? I couldn't find any hint. Maybe it's the video manager (display manager)? I am using KDE on an Ubuntu Natty install. I also enabled hardware acceleration with libdvpau1: sudo bash -c "echo 'EnableLinuxHWVideoDecode=1' >> /etc/adobe/mms.cfg" (this seems to have no effect at all ...) Ubuntu Natty 64-bit, Firefox 7, Flash 11.01 )

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