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• X11 forwarding through SSH

  - by martinjlowm

  I have been playing around with X11 forwarding the past few hours and so far I've managed to forward my desktop pc's X Server to my laptop, using X11VNC as server and X2VNC as client. X2VNC uses Xinerama to provide a dual-screen-like behavior between my laptop and my desktop pc. It's actually really great! I know that most Linux systems run Xorg and desktop environments on TTY7. Therefore I was thinking, is it in any way possible to have the VNC-tunnel tied to it's own TTY? It would be great to be able to switch forth and back between two TTY's in order to choose which machine to manage. And I would like this approach more than using Xinerama or a GUI.

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• How do I get 12.04 to recognize swap partition so that I can hibernate?

  - by Kayla

  I justed installed 12.04 and used gparted to erase and enlarge my swap partition. When I rebooted, gparted said that the file partition for the swap was unknown. Gparted doesn't let me change the file partition to "linux-swap". It does let me change it to NTFS, but when I reboot, it goes back to "unknown". Thanks in advance for your help. Output from sudo swapon -s: Filename Type Size Used Priority /dev/mapper/cryptswap1 partition 9025532 0 -1 Output from sudo fdisk -l: Disk /dev/sda: 250.1 GB, 250059350016 bytes 255 heads, 63 sectors/track, 30401 cylinders, total 488397168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x9d63ac84 Device Boot Start End Blocks Id System /dev/sda1 * 2048 2459647 1228800 7 HPFS/NTFS/exFAT /dev/sda2 2459648 197836472 97688412+ 7 HPFS/NTFS/exFAT /dev/sda3 466890752 488395119 10752184 7 HPFS/NTFS/exFAT /dev/sda4 197836798 466890751 134526977 5 Extended /dev/sda5 197836800 448837631 125500416 83 Linux /dev/sda6 448839680 466890751 9025536 82 Linux swap / Solaris Partition table entries are not in disk order Disk /dev/mapper/cryptswap1: 9242 MB, 9242148864 bytes 255 heads, 63 sectors/track, 1123 cylinders, total 18051072 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x951b7f53 Disk /dev/mapper/cryptswap1 doesn't contain a valid partition table

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• Vagrant sahara plugin - multiple snapshots

  - by BazZy

  How I can make more than one snapshot when in sahara sandbox mode? Or, can I see list of all commits I've ever made and rollback to any? Why do I need all this? I just want to setup initial VM. After that I want to compile number of packages from sources, and this takes pretty long time. So right now I thinking of this order: Setup initial ubuntu 12.04 vagrant box Snapshot this state Compile sources, install system wide rbenv (it make compilation also) Snapshot second state Start all my infrastructure experiments Rollback to any of my previous states or commit third state

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• We want to setup low cost private cloud [closed]

  - by Virtual Jasper

  We are a small company with very limit funds. In order to improve our server reliability, we are studying to migrate to CLOUD. We seen some CLOUD provider, they would charge by resources such as, CPU, RAM.....Disk space....High Availability....etc. We have server team, so we also consider to built the private CLOUD, we seen the Windows 8 server, it does need license fee. So we looking at Linux side, we look at Ubuntu and OpenStack. What is the different between Ubuntu and OpenStack solutions? Is it both free on software license? and only to pay the technical support.

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• How can I exclude a file in a folder from basic auth (regex help)?

  - by simon180

  Hi I have a folder on my site which contains admin files and I've added basic auth following a little unwanted attention. This works fine however a couple of the admin functions won't work through basic auth as they handle file uploads and so I want to exclude these files from the auth. It shouldn't have any security implications as any rogue user wouldn't be able to access the pages that could create a session to use these functions. I am using the following basic code to exclude a file: <FilesMatch "(index.php\/myadminfolder\/myurl\/myaction/someotherstuff?)$"> Satisfy Any Order allow,deny Allow from all Deny from none </FilesMatch> The URL exclusion is not working. The URL to exclude is in the form: index.php/directory/subdirectory/action/uniqueid/blah What is the correct URL string to add to FilesMatch to exclude any files that start with the pattern of index.php/directory/subdirectory/action - regardless of what comes after action? Thanks Simon

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• Managing TFS Workspaces

  - by Enrique Lima

  You are the administrator (or since you may be the one that knows the most about it) and you need to do some cleanup on what is connected and perhaps even cleanup after people that have left the organization and left some code checked out in their workspace. What permissions do I need? You will need to have Administer Workspaces permission to perform the following tasks. The commands. In order to execute the commands, you will need to open a Visual Studio Command Prompt, once there you will be able to use the tf command.  This has a nice set of options, which I will be providing a listing for later on in another post. To list all workspaces registered: tf workspaces /collection:<url to your TPC> <workspace>;<owner> To delete a specific workspace: tf workspace /delete /server:<url to your TPC> <workspace>;<owner> If for any reason a workspace has embedded spaces, then surround that with “” (double quotes).

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• Fedora: "Login Incorrect"

  - by darkblackcorner

  I've just set up a minimal install on my netbook (the default was too resource hungry, so I figured I'd customize the install and learn something about linux at the same time!) No problems logging in as root, but when I create a new user and try to login as them I just get the "Login incorrect" error. I'm certain the password is correct, though the secure log displays an authentication error. Am I missing a permission somewhere? useradd test usermod -p [pwd] test Shell is added automatically I think (checking password file says shell is /bin/bash) I've tried adding the user to the sudo-ers group usermod -a -G wheel which doesn't help. I've kept the password simple in order to rule out human error.

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• Slurm: How to find out how much memory is not allocated at a given Node

  - by PlagTag

  i am new to SLURM. I am searching for a comfortable way, to see how many memory at an node/nodelist is available for my srun allocation. I already played around with sinfo and scontrol and sstat but none of them gives me the information i need in one comfortable overview. I had the idea to write a shell script, in order to fetch all fields of all jobs from scontrol and sum them up. But there must be an easier way. Would be great if anyone has an hint or idea!

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• How can I get rid of the motd message "*** /dev/sdb1 will be checked for errors at next reboot ***"? [duplicate]

  - by kmm

  This question already has an answer here: Persistent “disk will be checked…” in the message of the day (motd) even after reboot 3 answers My motd persistently has: *** /dev/sdb1 will be checked for errors at next reboot *** The problem is that I don't have /dev/sdb1 on my system. I only have /dev/sdb2 (mouted as /) and /dev/sda1 which mounts to /media/backup. I delete that line from /etc/motd, but it reappears after reboot. Here's my df output: Filesystem Size Used Avail Use% Mounted on /dev/sdb2 73G 3.7G 66G 6% / udev 490M 4.0K 490M 1% /dev tmpfs 200M 760K 199M 1% /run none 5.0M 0 5.0M 0% /run/lock none 498M 0 498M 0% /run/shm /dev/sda1 1.9T 429G 1.4T 25% /media/backup Update Here is the output of sudo fdisk -l Disk /dev/sda: 2000.4 GB, 2000398934016 bytes 255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x0003dfc2 Device Boot Start End Blocks Id System /dev/sda1 63 3907024064 1953512001 83 Linux Disk /dev/sdb: 80.0 GB, 80026361856 bytes 255 heads, 63 sectors/track, 9729 cylinders, total 156301488 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00049068 Device Boot Start End Blocks Id System /dev/sdb1 152301568 156301311 1999872 82 Linux swap / Solaris /dev/sdb2 * 2048 152301567 76149760 83 Linux Partition table entries are not in disk order I guess /dev/sdb1 is my swap space.

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• Origin of display connector numbers in XServer (e.g. HDMI1, HDMI2, DP1)

  - by Andreas N

  a custom mainboard has a DVI and a DisplayPort connector on the board. Currently, everything that is connected at DVI will be named "HDMI2" in XServer. I can see that by calling the "xrandr" tool (in Ubuntu Trusty Tahr). A display connected to the DP connector will be named "DP1" or "HDMI1", if I use a DP-to-DVI adapter. We are now testing a slightly upgraded board version, which has a newer CPU (Intel J1800, Baytrail) among other things and the position of the DVI and DP connectors are switched. Also, everything at the DVI port is called "HDMI1" and something connected to the DP port gets "DP2" or "HDMI2". Q: What causes these numbers to be produced in this manner and where (probably in the kernel) is it happening? I suspect the cause to be hardware related. Specifically, at which CPU pins the connector pins are routed and attached to. Q: Would it be possible to influence this numbering scheme in order to retain the previous numbering behaviour?

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• Is there any IP which refers to the internet?

  - by victorferreira

  Hello, guys, good morning. 127.0.0.1 is the local IP, isnt it? Is there a IP that I can use in order to refer to the any user in the internet? The thing is: i want to block a specific file to be accessed by the internet using IIS6. but i doesnt show me a clear way to do this. But i can define some security rules, for example: give IP restrictions for some file. So, i can deny for everybody (using that IP i am asking about) and allow for the internal IP. any suggestions?

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• How to retrieve connection details of CheckPoint SSL Network Extender?

  - by amoe

  My workplace uses a Java-based VPN tool named CheckPoint SSL Network Extender. I would like to configure the VPN connection myself using stock OS tools, because I find the applet to be rather unstable. How would I go about getting all of the connection details needed to manually connect to the VPN? My workplace only supports the official client. When I am connected with the Java applet, if I run ipconfig /all I can see that a hidden network connection is created named Check Point Virtual Network Adapter For SSL Network Extender - Packet Scheduler Miniport. I can see the various IP and DNS details there as well. However, because I need to log in to the applet-based tool, I presume I need to export some kind of key in order to use OS tools to configure this. Is this even possible? Answers for any OS are great although I am using Windows XP to test, and also want to use Linux clients.

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• What does CONTROL mean in the context of the Certificate

  - by Ram

  Hi Everyone, I am trying to implement encryption in sql server 2005 through Certificate and Symmetric Key and i came to know that the application user should have the following access in order to Encrypt and Decrypt Data 1) CONTROL permission on Certificate and 2) REFERENCES on the Symmetric Key (Let me know if i am wrong) Now my concern is what does CONTROL mean in the context of Certificate? If my User1 has Control permission on my certificate Cert1 What all can he do, Is there a way to restrict him further, but user1 still be able to Encrypt\Decrypt the data I could not find any good practice doc for certificate and key management so can some one advice the good practice for this Thanks, Ram

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• Scale an image with unscalable parts

  - by Uko

  Brief description of problem: imagine having some vector picture(s) and text annotations on the sides outside of the picture(s). Now the task is to scale the whole composition while preserving the aspect ratio in order to fit some view-port. The tricky part is that the text is not scalable only the picture(s). The distance between text and the image is still relative to the whole image, but the text size is always a constant. Example: let's assume that our total composition is two times larger than a view-port. Then we can just scale it by 1/2. But because the text parts are a fixed font size, they will become larger than we expect and won't fit in the view-port. One option I can think of is an iterative process where we repeatedly scale our composition until the delta between it and the view-port satisfies some precision. But this algorithm is quite costly as it involves working with the graphics and the image may be composed of a lot of components which will lead to a lot of matrix computations. What's more, this solution seems to be hard to debug, extend, etc. Are there any other approaches to solving this scaling problem?

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• What constitutes "commercial purposes"?

  - by RoboShop

  I'm looking at this license. It says that I can use it for "non-commercial purposes". What does that mean? I see in Stack Exchange, under Network Profile there is that graph that tracks your points across your Stack Exchange accounts. It uses a control called HighCharts which have a paid and Creative Commons licensed version. So would Stack Overflow constitute a commercial site? We don't pay to use this site, but obviously the site makes money from ads, etc. Then again, there's a lot of sites that have ads who won't necessarily make a profit, it may only be subsiding their costs. But even then, you could argue that even if it is only subsiding their costs, a lot of IT companies run at a loss in order to build a big enough customer base. So where is the line here? Is it any website on the internet? Is it any website that has ads? Is it any website that turns over a profit?

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• SSL Certificate in ISA Server 2004

  - by user66011

  Hi All I have a ssl certificate for Exchange which has been installed on IIS for OWA but in order for this certificate to be presented to the user when they login, i.e. visit OWA, it has to be installed also on the ISA server. This is where I have become stuck. I have installed the certificate in the Personal section, but when I go to point the web listener to the ssl certificate it is never in the list. So, my question is, am I putting the certificate in the right place on the server? If so, where should it go? Cheers

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• Network location is not on the Domain

  - by Kyle Brandt

  I have a computer joined to the domain, but it doesn't view the network "location" as being part of the domain. I have tried removing and rejoining the domain and this doesn't help: Other computers in the same network don't have this problem. I have also tried several different icons, including both the train and the airplane which doesn't seem to make a difference. At least using nslookup, the server seems to have connectivity with the DCs in the same site. There also seem to be some errors that suggest a NULL domain: Computer: OR-WEB05.ds.stackexchange.com Description: NtpClient was unable to set a domain peer to use as a time source because of failure in establishing a trust relationship between this computer and the '' domain in order to securely synchronize time. NtpClient will try again in 3473457 minutes and double the reattempt interval thereafter. The error was: The trust relationship between this workstation and the primary domain failed. (0x800706FD)

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• Best practices for FQDN for standalone domain (is a two part domain.tld okay?)

  - by birchbark

  I've searched quite a bit and can't seem to find a straight, modern answer on this. If I am hosting a domain, say, mydomain.com, on a machine which is going to solely be used for that domain, and there are no subdomains, is there a real, practical reason besides compliance to create an arbitrary hostname (i.e. myhost) just in order to have a three-part FQDN (myhost.mydomain.com) to satisfy some sort of RFC or convention that's expected. This seems to make a lot of undue complexities from my perspective, and I'm not sure if there's an advantage to this or if it's just a hold-over from a time where all web resources came from a subdomains such as www and ftp which may need to scale to separate machines. I don't use www on my domain, either, which is ill-advised for all I know from an administrators perspective (though removing it is the norm from a designer's perspective)...

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• DNS lookup fails when forwarding to subdomain

  - by Kitaro

  In order to migrate to a new mailserver with little dns problems/downtime, I have set up a second postfix that is currently accessible on a subdomain mx record, eg. the main postfix accepts mail for [email protected] while the second postfix also accepts mail for [email protected]. I added a forwarding rule to postfix saying that postfix should forward mail destined for [email protected] to [email protected] (for regular local delivery) and to [email protected]. Local delivery still works as expected, but when trying forward the mail to the new mx, postfix appeds the domain part at the end of the forwarding address, resulting in [email protected], which of course fails and the mail bounces. Why does postfix mess with the alias name in that way and how can I turn that of?

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• Google Analytics API data for goals (funnels) doesn't match - how do they reconcile?

  - by bkgraham

  I have a Google Analytics account with a well-functioning funnel made up of 4 goals. I can query the API and get the data out, but it does not match the funnel report in Analytics. Without getting into specific values, I can give you an example with faked data. Here's how the funnel might look: Shopping Cart 100 > 100 > 20 80 (80%) Address Page 5 > 85 > 25 60 (71%) Payment Page 2 > 62 > 10 52 (84%) Checkout 1 > 53 (49.07% funnel conversion rate) Okay, so you would expect the API to output data something like this: goal1Starts goal1Completions goal1Abandons 100 80 20 goal2Starts goal2Completions goal2Abandons 85 60 25 goal3Starts goal3Completions goal3Abandons 62 52 10 goal4Starts goal4Completions goal4Abandons 53 53 0 Instead, it's different. Firstly, the abandons are associated with the following goal (so goal1 always has 0 abandons and goal4 always has 0 abandons. Okay, I can work with that. What's confusing is that the numbers are always a little different. The goal1Completions always match the report, as do the goal4Completions, but everything else is off by a small amount. Sometimes it's only 2 visits, other times it's off by 50. For the report above here's the kind of results I would tend to get: goal1Starts goal1Completions goal1Abandons 100 100 0 goal2Starts goal2Completions goal2Abandons 105 84 21 goal3Starts goal3Completions goal3Abandons 90 65 25 goal4Starts goal4Completions goal4Abandons 58 53 5 Here's what I know: Goal(n)Completions + Goal(n)Abandons = Goal(n)Starts Goal(n)Starts = Goal(n-1)Completions Goal(n)Starts - Goal(n-1)Completions != reported number entering at that level That third one is particularly disappointing. So, here's my question: What data do I need to pull from the API in order to recreate the counts in the Funnel report in Google Analytics? I don't need the pages exited to entering from - just the counts at every level.

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• Attempting to install ubuntu 11.10

  - by Orin

  I installed version 9 sometime ago and since have forgotten the process for partitioning, or the layout is different. I have 5 partitions but only have windows xp installed on the pc in question with that being the one of those 5 partitions which is ntfs 34444 mb its - a 40gig hard-drive. My first question is... is there a way to get a screen shot of the partitioner when I am running the demo session straight from disc... these 5 partitions are fragmenting the other 4ish gig needed to install.. I get an error message which says go back and make sure 1 partition has at least 2.5 gig or so. But I have no idea what I am supposed to set these remaining 4 partitions to in order to proceed.. I have read up on install guides and understand that one must be "/" root and another as swap... but to no avail thus far have the correct combo. A few screen shots will no doubt help you guys answer as I'm baffled as to what specific details to give as each one has various settings on inspection, and I don't really feel like writing it all down manually then posting specs for each one

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• help me being the next zuckerberg [closed]

  - by Kraken

  I really expect someone to help me with my problem as stated below. I started learning website making by having tutorials from w3schools.com but after doing taking the HTML tutorials I don't think I really can do anything with it. Maybe I don't know everything about HTML yet. I know the online tutorials are not enough but what I need you guys to tell me is that how can I learn making some nice websites. I have vacations for two months now and I think it would be the best time for me to learn making websites as I really love to be a website developer. Now I would like to start from the scratch. I know some C language (though I know it will not help me). So tell me from where shall I learn HTML and what all things shall I learn after that and in what order. If you can also help me with the material (let it be books or online tutorials). But I would like to know how can I gain confidence that I can make some websites as just learning online tutorials doesn't help me much. I also tried some video tutorials but in that too, they will just tell me some of the functions and not all. So what am I supposed to do.. just know a limited functions as they want me to know in video tutorials or do something else.

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• LAN full of public ipv4 addresses - How to filter it?

  - by sparc86

  The answer to my question maybe is not that hard but anyways, I do not know what to do. So, I just got in a new job in a Univerisity and I found out that the network (the LAN) is full of public IP addresses. Seriously, the whole LAN (probably more than 150 hosts) has it' own internet IP address and I don't know how to manage it. I have a very good experience using iptables (Linux firewall) in a NAT'ed environment. But then how should I proceed in an environment where all my LAN is working with a bunch of public IP addresses? Should I just use the "forward" rules and ignore the NAT rules or is there any other issue in such environment which I should take care? Can I add a firewall between the router and the LAN in order to produce packet filtering for these public IP addresses in my LAN or will this just not work? Thanks!

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• Running a script on startup before X starts in Ubuntu 9.10

  - by Epcylon

  I have a script that I want to run at startup to switch X-configs depending on location, but I can't seem to find out where to put it in order to get it to run before X is started. This results in me having to restart X to get it to run the correct config. Currently, my script is located in /etc/init.d/whereami, with symlinks in /etc/rc[2-5].d/S25whereami. I was trying to find out when X is started, in case the problem is simply the 25, but I can't seem to find the answer... Any help is appreciated.

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• How to install a mmc certificate on Windows?

  - by Alex

  I am not familiar with Windows very much, and I have trouble installing a MMC certificate. I am following this description to use MMC to create a certificate, but I cannot complete the step labeled ' Install or view the certificates under:'. There is nothing unter 'ConsoleRoot' - 'Certificates (Local Computer)' - 'Personal', and when I try to find the certificate I cannot find it. There is another page with nice screenshots, which works until step 9 when I am about to choose the certificate file. I do not know where this file is been created, if at all. How can I create/install/import this certificate? I require this in order to use the powershell Enter-PSSession from a remote machine...

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