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• How is network mounted software executed?

  - by CptSupermrkt

  I would like to understand how network mounted software works. For example, at my place of work, we have a software server. Each client machine (hundreds of them) automatically mounts directories from the software server on boot. For example, a program like Matlab is installed just once on the software server, but each client machine can start up an instance of Matlab. What is going on under the hood? Let's say I run /opt/bin/matlab and /opt/ is mounted from the software server, what happens when I press Enter to execute matlab on a client machine? The process is on the client machine, and I've already narrowed down that there isn't any implicit or hidden file transfer (i.e. copying matlab to my machine temporarily for that session) by running matlab on a computer with nearly zero disk space (i.e. not enough room to transfer). Since Matlab was installed on the server, how is my client computer executing it? What mechanism is controlling this? What is happening behind the scenes?

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• How to host an AP or a hotspot?

  - by user1048138

  I'm running Ubuntu 12.04 as a virtual machine on my Mac. Since I am unable to get the virtual machine to have full access to my WiFi card, I bought another USB WiFi card to use. This is my WiFi card. If you are unfamiliar with Virtual machine, as far as I know, since the Ubuntu has its own card now, it shouldn't matter. I have followed these guides with no luck: https://help.ubuntu.com/community/WifiDocs/WirelessAccessPoint http://www.danbishop.org/2011/12/11/using-hostapd-to-add-wireless-access-point-capabilities-to-an-ubuntu-server/ The problem is that the WiFi connection appears on all of the machines that I have in my house: 2 iPhones, Dell machine running Ubuntu and two Macbooks. However the connection times out on all of these machines. Questions: Could this be a driver issue if that same WiFi card can connect to other WiFi points and use its internet Could this be DHCP related? I would think not. It should at least get a 169.X.X.X address? No? Any solutions for me?

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• APPPATH and LOCALAPPPATH environment variables are not set on a profile in Windows 7 Pro 32bit

  - by Timur Fanshteyn

  I am having problem with a user account on a Windows 7 machine (local install, admin user account) APPPATH and LOCALAPPPATH environment are not set. Another user on the same machine, (also a local account, but without admin rights) has the variables set. This started to happen recently, however, I can not figure out if there was something installed on the machine to cause this. This is creating issues with applications that are trying to expand the variables to store local files. Thank you for the help.

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• Can't boot from CD

  - by Jason Swett

  I installed Ubuntu on a PowerBook G4 and it only works about 10% of the time. For this reason I decided to re-install OS X, but my machine won't boot from CD. It also won't boot Ubuntu the vast majority of the time, so I'm kind of screwed. After a ton of tries, I finally got my machine to boot a Linux command line. Is there anything I can do at this point to make my machine more runnable, just for the sake of installing OS X?

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• Can't boot from CD

  - by Jason Swett

  I installed Ubuntu on a PowerBook G4 and it only works about 10% of the time. For this reason I decided to re-install OS X, but my machine won't boot from CD. It also won't boot Ubuntu the vast majority of the time, so I'm kind of screwed. After a ton of tries, I finally got my machine to boot a Linux command line. Is there anything I can do at this point to make my machine more runnable, just for the sake of installing OS X?

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• Unable to view 2 local sites over network

  - by gentrobot

  I have 2 websites running on my local machine that I'd like to view from other machines on the same network. For /etc/apache2/sites-available/site1.com: <VirtualHost *:80> ServerName site1.com DocumentRoot /var/www/answers/app/webroot DirectoryIndex index.php <Directory "/var/www/answers/app/webroot"> Options FollowSymLinks AllowOverride All Order allow,deny Allow from all </Directory> </VirtualHost> For /etc/apache2/sites-available/site1.com: <VirtualHost *:80> ServerName site2.com DocumentRoot /var/www/answers2/app/webroot DirectoryIndex index.php <Directory "/var/www/answers2/app/webroot"> Options FollowSymLinks AllowOverride All Order allow,deny Allow from all </Directory> </VirtualHost> I have added 2 entries in the /etc/hosts file as: 127.0.0.1 site1.com 127.0.0.1 site2.com Now, when I point the browser on my machine to site1.com, it shows me the first site and pointing the browser to site2.com, it shows me the second site. However,when I type in the local IP of my machine in the browser, it always shows site2. How can I change it to switch between site1 and site2 ? Is there a way that I can view both the sites form another machine (esp. mobile devices over wireless network) ?

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• Battery won't charge and BSOD: DRIVER_POWER_STATE_FAILURE

  - by JamesGecko

  I have a Dell Vostro 1510 running Windows 7. Today when I pulled my machine out of it's bag and plugged it in, the little battery light on the side blinked constantly instead of staying solid, and Windows showed a message that the battery was not charging. The battery is 3.5 years old, but it can still hold the machine in standby overnight, so I don't know why it won't charge anymore. After I have had the machine on for a while (20 minutes the first time, 40 minutes the second time), it shows a blue screen of death with the message DRIVER_POWER_STATE_FAILURE and reboots. I can deal with the battery being dead, but not with blue screens of death. Does anyone know how to fix it? Edit: Potentially relevant, this started happening after an OS update was automatically installed on Friday and Windows started nagging to reboot. The first BSOD was before the reboot; the update made a lot of registry changes when the machine came up, and the second BSOD was 40 minutes later.

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• How do I start the Workstation Service so I can use `net use`?

  - by nitefrog

  I have a Windows 7 machine that logs into a domain. The machine can net view and see the different shares, but when I try to use, net use * \\name\share, I get an error stating that the service is not started. Yet when I issue a net start, it states the service is already started. My other win7 machines work fine; they can see and use any of the shares. Is there a security setting that needs to be disabled or enabled? I really need to get this working, and I have no other ideas as the other machines have no problem accessing the shares on different systems. The error I am getting is , "The Workstation Service Has Not Been Started", but like I said other machines can connect fine, and when I issue a, "net start workstation", it states the service is already started. In addition the error number I am receiving is 2138. UPDATE: On the machine that is having issues. From the troubled machine if I issue a Net View \\name I can see all the shares on the machine I want to connect to. When I try to net use * \\name\sharename I get the error The Workstation service has not started. I have set both settings sc config lanmanworkstation start = auto and sc config lanmanserver start = auto on the Windows7 computer that is having issues. I have rebooted the computer and still no dice. I can net view any computer on the network and see all shares, but I cannot access any of the shares in which I can see. In the registry under the HKLM\System\CurrentControlSet\Services Both LanmanServer and LanmanWorkstation start is set to 2. Screen capture of net use and view: The Services: This is really weird. What am I missing? It has to be a security setting...

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• Moving domain currently on Google Apps to my own machines

  - by mag

  I own a domain which currently uses Google Apps (it was free back then). Due to recent events I have decided I want to move everything right where I can control the data, which basically means I have the idea of either using a dyndns solution and have at home my own mail server or, better, use an hosted machine to retrieve the mail and the move it via mua to a local machine. My problem is that I know basically next to nothing about DNS and stuff, while I have installed mail servers before. :) [I simply never had the need to work with DNS...] I'd really appreciate if someone could point me in the right direction: what do I need to do to: terminate the Google Apps management of the domain setup dns entries to that mail goes to the new server instead of Google Apps Additionally: if I decide to go the "hosted route" and I put up a machine via a supercheap hosting seller (say, the cheapest OVH one is a few euros a month), how can I tell the world that that machine is the mail server? Of course I would be wise to do a full backup of the mail on Google Apps, and that's easy enough to do by imap (right?).

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• How to access XAMPP virtual hosts from iPad on local network?

  - by martin's

  Using XAMPP on one machine. Multiple virtual hosts defined. One per project. Format is .local For example: apple.local microsoft.local client-site.local our-own-internal-site.local All works perfectly from that one machine. I now want to have other systems within the network access the various sites. The main reason for wanting to do this is to be able to test site functionality and layout from mobile devices without having to upload partial work to public servers. I can access the main XAMPP default site by simply entering the IP address of the XAMPP machine in, say, Safari on an iPad. However, there is no way to reach .local that I can see. Would this entail setting up a DNS server within the network? We have a mixture of Windows and Mac machines. No Linux. The XAMPP machine is Vista 64. I don't want real external internet access to be affected in any way, just ".local" pointed to the XAMPP machine if that makes sense.

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• Grizzly server - works with IP, but not with domain name

  - by Hitchhiker

  I'm hosting a grizzly web service on a Windows 7 Pro machine (embedded in a regular Java process), and it is binding to http://my-domain-name. When trying to hit the service from another machine, requests to http://my-domain-name fail (fiddler shows error code 502), but requests to http://my-ip work. When the service runs on a Windows Server 2008 machine, this doesn't happen (both requests succeed). What could be the issue?

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• How to ensure nvidia_current module loads during boot

  - by Aras

  I am running Ubuntu 12.10 on an Asus G75V laptop with nvidia gforce GTX 660M. I first run 12.04 on this machine and was able to install nvidia_current drivers from swat ppa: sudo apt-add-repository ppa:ubuntu-x-swat/x-updates sudo apt-get update sudo apt-get install nvidia-current This worked in 12.04 and after rebooting the machine my graphics where working properly. After upgrade to 12.10 however, the machine boots into a low resolution desktop which I can not really interact with. I suspect this is due to the driver not being loaded properly. To fix this, I have to switch to ctrl+alt+F1 session and manually load the nvidia_current module and restart the desktop manager: sudo modprobe nvidia_current sudo service lightdm restart Now everything works fine again. However, I would like not to have to do this every time I reboot the machine. I also dont want to hack an script to do this on load. Basically, if things are setup currectly, the nvidia_current driver which is installed should load. How can I make sure nvidia_current driver module loads properly when system starts?

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• How to reach a Global Scope IPv6 host?

  - by Vaibhav Bajpai

  I have setup DNS64+NAT64 on a machine with 2 interfaces: eth0: public IPv4 address (connected to outside world) eth1: global scope IPv6 address: 2001::/64 I can successfully use ping6 google.com on this machine. Now I want to connect my MacBook to this machine by making it an IPv6-only client and perform some tests, but I do not have an IPv6 address assigned on this MacBook. I'm wondering, how should I manually assign one so as to route all my IPv6 traffic (I will disable IPv4 on my MacBook) to this machine, which will be picked up by DNS64+NAT64 to be converted to IPv4 requests and sent to the outside world?

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• Problems with Startup after Script runs to Shutdown Windows 7 PC

  - by Toby Allen

  I have a simple .bat script to shutdown a kiosk style machine in our work shutdown -h -f this hibernates the machine and I have it running each evening as a scheduled job. However my problem comes when I turn the machine on again. The first time I press power it starts up and then immediately hibernates again, like it runs the script a second time. the second time I press power it stays up. Any suggestions on how I can avoid this?

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• Fixing copy/paste for Remote Desktop Connection sessions [duplicate]

  - by netadictos

  Possible Duplicate: Can't copy and paste in Remote Desktop Connection session Recently I have been working with Remote Desktop Connection. I use it to access a virtual machine implemented through Hyper-V. I have had many problems with the simple operation of cut-and-paste from my machine to the virtual one. The link between my clipboard and the remote clipboard is often broken. It is usual that this happens, when I copy/cut in the remote machine and then copy in my computer and then paste in the remote machine, How do I fix this?

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• Lazy linux backup system?

  - by Alex

  Ok, so I want to say Time Machine, but that's note exactly what I'm looking for. I want to set up a system that will regularly (hourly?) back up the /home directory of our machine. time Machine style things are naturally preferable since they save space by only saving the changes, but honestly, this is important enough that I can suffer some waste. Any ideas?

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• Not able to connect to port different than 22 - OpenVPN

  - by t8h7gu

  I have OpenVPN network with 5 clients. Computer with Arch Linux which hosts OpenVPN server, It also hosts virtual machine with Computer with CentOS which is also connnected to OpenVPN subnet. Windows 8 which hosts virtual machine with CentOS. Both of them are connected to OpenVPN. Last one machine is virtual machine with CentOS which is hosted by computer with Ubuntu 14( which is not connected to OpenVPN. All machines in OpenVPN subnet are bolded. All phisical computers are in different networks. The problem is that when I use nmap to scan Windows and it's guest virtual machine it's saids that host seems down. When I force namp to scan specific port it shows filtered state: nmap -Pn -p 50010 n3 Starting Nmap 6.46 ( http://nmap.org ) at 2014-06-07 19:49 CEST Nmap scan report for n3 (10.8.0.3) Host is up (0.11s latency). rDNS record for 10.8.0.3: node3.com PORT STATE SERVICE 50010/tcp filtered unknown Telnet also cannot connect to this port telnet n3 50010 Trying 10.8.0.3... telnet: Unable to connect to remote host: No route to host But ss on this host show's proper state of this port ss -anp | grep 50010 LISTEN 0 50 10.8.0.3:50010 *:* users:(("java",12310,271)) What might be possible reason of that and how to fix it? EDIT I've found that I am able to connect via telnet to ssh port: telnet n3 22 Trying 10.8.0.3... Connected to n3. Escape character is '^]'. SSH-2.0-OpenSSH_5.3 So it seems that it's not problem with Windows firewall. But I have no idea what it might be. Also nmap result for first thousand ports: nmap -Pn -p 1-1000 n3 Starting Nmap 6.46 ( http://nmap.org ) at 2014-06-07 20:08 CEST Nmap scan report for n3 (10.8.0.3) Host is up (0.49s latency). rDNS record for 10.8.0.3: node3.com Not shown: 999 filtered ports PORT STATE SERVICE 22/tcp open ssh Nmap done: 1 IP address (1 host up) scanned in 77.87 seconds

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• will a virtual box file on windows work on a mac?

  - by sososo

  if I move a vm form a windows machine to a mac machine, will it work?

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• How much resources are used during a RDP connection?

  - by KronoS

  Having recently installed a RDP app on my mobile device and got me wondering: this small device which has a limited amount of resources compared to the PC I'm connecting to, is still able to operate my remote machine to almost full capacity. With that, how much of the local machines resources are actually used in the connection to the remote machine? Also how much of the resources are used on the remote machine?

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• Cant ping ip on LAN. Port forward works fine though.

  - by Anoop

  I have a Solaris 11 machine running inside the LAN. It is a default install. I can access the machine and ping it if I ssh into my router (if it matters, it is running dd-wrt). I cannot ping the Solaris machine using ip address from any other machine inside the LAN. But if I setup port forwarding everything works perfectly fine. I can also use the port forward from outside the LAN (from my office) - which is good and how I want it to be. I can SSH and ping and do pretty much everything else from outside as well as inside but only as long as I have the port forwarded from my router. Why would I not be able to ping or ssh or even access the Solaris 11 machine from within the LAN - I have checked and couldn't find any firewall running on the Solaris 11 box. I even tried disabling every known firewall on the router (dd-wrt, it had something like SPI firewall running). I even tried setting a static IP for my Solaris box but all in vain! Please help me understand how and why this happens!! Thanks.

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• How can I have sound output before logging in?

  - by ??O?????

  I have a machine (Ubuntu 11.10) that I would like to have it play audio (typically through an amplifier), but the machine should be headless (where its final placement will be). I will control what is played through ssh. However, there is no sound output until I login to the graphical console. At first I thought it was an issue with pulseaudio, so I promptly removed it to use the default ALSA, but I have the same issues. I ssh to the machine, I run alsamixer and get the typical cannot open mixer: No such file or directory error (while /proc/asound/cards display correctly what I have). If I login on the graphical console, alsamixer works fine in the ssh session, and I have sound output. I logout, and then alsamixer stops working. So something runs (Xsession perhaps?) when I login that enables sound output, and gets disabled when I logout. I remember in older versions of Ubuntu, there was a drum roll when the machine showed the login screen; that is not the case anymore. Perhaps if I somehow can enable that drum roll, I'll have fixed my problem too. In any case, the question I ask is what the title says.

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• Distributed website server redundancy

  - by Keith Lion

  Assume a website infrastructure is very complicated and is fully distributed (probably like most large web companies). Am I right in thinking that although there are all these extra web servers to handle multiple client requests, there is still a single "machine" whereby users must enter? I am guessing this machine will be the one physically associated to the IP address? I ask because I need to know whether, in places where distributed systems exist, there is still a single point of failure- usually the control node or, in this example, the machine connected to the public internet? Surely there cannot be two machines connected to the internet, as they would have to have different IP addresses? This "machine" may not be a server per se, but maybe it is a piece of cisco equipment. I just need to know whether, in the real world, these distributed systems still have a particular section where they depend on the integrity of one electronic device?

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• Map path server with workgroup to other server with domain

  - by bzamfir

  I have the following situation, and I need some help to setup properly I have two VPS (hosted with the same provider, maximumasp). Server A is 2008R2, set with WORKGROUP, and server B is 2012, set with domain, maximumasp.local. On server A I have an old web app, which uses a special folder, c:\MyUploads, to store uploaded files. App is using this using an appSetting. It will be kept running for a while for safety / compatibility reasons. I installed a new version of the application on server B, running under AppPoolIdentity. Both instances of the app (A and B) will connect to the same database, so I need them to share also the access to upload folder c:\MyUploads. How should I setup the app on machine B to access the folder c:\MyUploads ? My idea is to share the folder as \A\MyUploads, and then map it to server B. But the problem is, I don't know to give Read/write to c:\MyUploads on machine A to IIS AppPools\ on machine B I was trying a test, and shared the c:\MyUploads to Everyone, ReadWrite. I was able to access it from machine B using \\MyUploads But when app from machine B tried to access a file, it gave error. Any idea how can I accomplish this? Some advice on best practices for such situation would be great. Thank you

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• How to share internet over network

  - by abc

  i have a machine connected to internet, i want to set up proxy server or any other configuration that can help me to share internet over other machines in the same network machine may be of diff. platform (linux,mac, , windows), and server can be (either linux or windows) so how to configure now.. all machine are in network. Thanks

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• Question about modeling with MVC (the pattern, not the MS stuff / non web)

  - by paul

  I'm working on an application in which I'm looking to employ the MVC pattern, but I've come up against a design decision point I could use some help with. My application is going to deal with the design of state-machines. Currently the MVC model holds information about the machine's states, inputs, outputs, etc. The view is going to show a diagram for the machine, graphically allowing the user to add new states, establish transitions, and put the states in a pleasing arrangement, among other things. I would like to store part of the diagram's state (e.g. the x and y state positions) when the machine information is stored for later retrieval, and am wondering how best to go about structuring the model(s?) for this. It seems like this UI information is more closely related to the view than to the state-machine model, so I was thinking that a secondary model might be in order, but I am reluctant to pursue this route because of the added complexity. Adding this information to the current model doesn't seem the right way to go about it either. This is the my first time using the MVC pattern so I'm still figuring things out. Any input would be appreciated.

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