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  • Tips on self-learning boot-time fundamentals (grub, disks, partitions, LVMs, etc)?

    - by Harry
    Is there any good resource which I can use to self-learn all the low-level system administration details on Grub, Grub2, disks, partitioning, LVM, etc? I'm comfortable with system admin tasks post-boot but I lack knowledge about both the fundamentals and actuals of all that happens during boot on a Linux system such as Fedora. Any recommendations on how to setup a testbed on my desktop for learning the above? I may not be able to get another machine / harddisk, so may have to rely on something like VirtualBox. But don't know if there are other (better) options... so asking for tips from those who have self-learned / mastered this track themselves.

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  • Is this a graphics card failure?

    - by Alexander Lozada
    I own an older 32-bit Dell XPS 410 that I intended to use for gaming. Currently, I have a ATI Radeon 4000 series card installed, along with a Core 2 Duo and Ubuntu 12.10. I'm fairly certain that my problem is a GPU failure - but before I spend money on a new one, I want to make sure other components aren't the problem/if it would be cheaper just to buy a new PC. Here are my symptoms: Computer power button remains orange (usually green when successfully started.) A fan gets increasingly faster until powered off. Monitor remains black when started, receiving no signal. When powered on, the computer will power itself off near instantly, and then turn on again. If startup is successful, sometimes the screen will become jittered and unusable unless restarted. Is this just a GPU failure, or something more extensive like the motherboard?

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  • Is it possible to run pgp 6.5.8 freeware on Windows 7 64 bit machine?

    - by Johnny Holmes
    I am trying to get the PGP Command Line -Freeware Version 6.5.8 by Networks Associates working on a Wndows 7 64 bit machine. Does anyone know if it is possible? I installed it in C:\pgp when i run pgp, it keeps telling me that it can't find the pgp.cfg file. My PGPPATH is defined and set to C:\pgp I have also included this path in my Path variable Can anyone tell me what i am doing wrong. The documentation states that: "The first time you start PGP, the software checks to see if the environment variable PGPPATH is defined. If PGPPATH is defined, the software puts the pgp.cfg in the %PGPPATH% directory" Edit: This is most likely a Windows 7 professional folder rights issue, since the file pgp.cfg can't get written. I tried my best given the folder full rights, but im not 100% confident that i did it right. Anyone help me?

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  • Log internet requests made by vpn client

    - by Adam Schiavone
    How can I log the requests that people make to the internet when they are connected to my VPN? If one of them does something illegal, I need to be able to prove that it was not me, but a VPN client. This really is a just in case type thing. So, I want to be able to see the details (server, port, domain name, and time connected) in a file somewhere. Does windows offer this with its PPTP VPN service, or is there 3rd party software to do this (Free is better)? EDIT I have setup accounting, but that does not seem to tell me what I am looking for. Could someone comment on what accounting does? EDIT 2 Maybe I should heve been clearer. My system is running windows server 2008 r2 and using the stock VPN software (PPTP)

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  • Apps crashing - Android 4.3 in VirtualBox

    - by Nasenbaer
    Performance and stability problem with Android 4.3 in VM. Tried with x64 and x86 System. VirtualBox V4.3.2 in use. Android could be installed on x86 only. But there it seems to be successfully, using the "Linux 2.2" template on VirtualBox. 1024MB RAM and 2GB Harddisk defined. Some times Android browser is crashing and closing. In all cases stuff like "Skype" and "Plats vs Zombies" does never startup after installing. Crashes directly. "Plats vs Zombies 2" is not able to install. Is there any way of gettings such stuff work?

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  • ps ux on OSX shows user for ps command to be root? Is this normal?

    - by snies
    I am running OS X 10.6.1 . When i am logged in as a normal user of group staff and do a ps ux it lists my ps ux command as being run by root: snies 181 0.0 0.3 2774328 12500 ?? S 6:00PM 0:20.96 /System/Library... root 1673 0.0 0.0 2434788 508 s001 R+ 8:16AM 0:00.00 ps ux snies 177 0.0 0.0 2457208 984 ?? Ss 6:00PM 0:00.52 /sbin/launchd snies 1638 0.0 0.0 2435468 1064 s001 S 8:13AM 0:00.03 -bash Is this normal behaviour? And if so why? Please note that the user is not an Administrator account and is not able to sudo.

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  • How to connect 2 routers (Asmax and D-link) RJ11 vs RJ45 issue

    - by piobyz
    I just bought a new router, D-link DSL 2641B and want to connect it to another one, provided by my ISP, Asmax AR 804MP. Previously, I had Linksys WRT350N, and there was no problem, while I had Ethernet cable plugged in to one of LAN ports in Asmax and INTERNET(RJ45) port in Linksys, connection used PPPoE protocol -- worked OK. D-link has DSL(RJ11) port (which I don't want to use as Asmax replacement, while there is a separate Ethernet cable with a TV plugged to Asmax, which I don't want to configure from scratch on D-link). How should I connect my new D-link to work with Asmax? Via DSL port? Via one of the LAN ports (in which case I probably should change the purpose of this port in the config, I guess?). I tried connecting D-link both ways: LAN(ASMAX) to LAN(DLINK) LAN(ASMAX) to DSL(DLINK) (using RJ11 - RJ45 cable) I hope there is some setting in the DLINK's config that I overlooked. I haven't tried to see what's in ASMAX's config, but I guess I don't need to change anything there, while Linksys worked just fine? The only difference I see, is that D-link has RJ11 DSL port as WAN, and Linksys has RJ45 (called by them INTERNET) as a main WAN port.

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  • Ubuntu 12.04 froze during update, won't boot

    - by Cichol
    I've recently installed Ubuntu 12.04 on my laptop, and every time i tried to update it, it would freeze for a few seconds, and tell me that the updates could not be downloaded. After many, many tries I managed to get them downloaded, but then in the middle of installing them, it froze. Completely. No mouse movement, no blinking lights, no nothing. After a few hours of letting it sit there, I finally hit the power button to do a hard reset, and now when I select Ubuntu on the boot screen (Dual-boot with Windows 7), I get a blank purple screen, and then nothing. Another freeze. I've tried getting into the console, but no command I input has any visible effect. I have a ton of music stored on the partition it's in, so I'd really rather not have to reinstall. My specs, to the best of my knowledge: Clevo Corp model B7130 (Sager custom) CPU: Intel Core i5 @ 2.53gHz (4 CPUs) Graphics Card: Nvidia GeForce 425m 4096 MB RAM Drivers: Whatever comes with the download of 12.04. As a side-note, I installed Ubuntu via the Windows Installer program (wubi). Does that make a difference?

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  • How can I route packets from one application to a virtual machine in windows 7?

    - by user836045
    I am trying to test an application running in windows 7, and I would like to send the packets it generates to a server VM (I am using virtualbox) on the local machine which will act as a simulation for when packets will be really sent over the internet to a distant server. I need to check for correctness of the packets in certain situations. Is there a way on windows to take packets produced by an application and instead of passing it to my router, pass it along to another process, i.e. my virtual machine. I'd prefer not to change any of the code on my application and would rather find an outside solution. Is there such a solution for windows 7?

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  • Trying to Set Up SSH Tunneling To MySQL Server for MySQL Query Browser

    - by Teno
    I'm trying to set up SSH tunneling on a remote web server to another MySQL server so that the database can be browsed easily with MySQL Query Browser. I'm following this page but cannot connect to the MySQL server. http://www.howtogeek.com/howto/ubuntu/access-your-mysql-server-remotely-over-ssh/ What I've done: logged in to the web server with Putty via SSH. typed ssh -L 33060:[database]:3306 [myusername]@[webserver_address] where [...]s are altered by the actual information. I was asked a password and typed it and got the following message. So it seems login was successful. socket: Protocol not supported Last login: .... 2012 from .... Copyright (c) 1980, 1983, 1986, 1988, 1990, 1991, 1993, 1994 The Regents of the University of California. All rights reserved. FreeBSD 7.1-RELEASE.... Welcome to FreeBSD! Opened MySQL Query Browser in Windows and entered Server Host: localhost Port: 33060 UserName: myusername PassWord: mypassword And it says, Could not connect to the specified instance. MySQL Error Number 2003 Can't connect to MySQL Server on 'localhost' (10061) Sorry if this is too basic. Thanks for your information.

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  • Grant a user access to directories shared by root (mod: 770)

    - by Paul Dinham
    I want to grant a user (username: paul) access to all directories shared by root with mod 770. I do it this way: groups root (here comes a list of groups in which root user is) usermod -a -G group1 paul usermod -a -G group2 paul usermod -a -G group3 paul ... All the 'group1', 'group2', 'group3' are seen in the group list of root user. However, after adding 'paul' to all groups above, he still can not write to directories shared by root user with mod 770. Did I do it wrongly?

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  • Snapback in Firefox

    - by Casebash
    In my address bar, on the left of the star, there is an option Snapback: [Empty] for every site. I haven't seen this before and I don't have the Snapback plugin. Doesn't anyone know where it may have come from and what it does? I recently upgraded to 3.5.6 on Ubuntu, and may have had some plugins upgraded, but not sure which. I have a ridiculous number of plugins on this comp otherwise I could just try disabling them one at a time.

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  • How useful is hard drive encryption?

    - by D Connors
    So, let's say you have a notebook, and you encrypt the entire hard drive. Whenever you boot it's gonna ask for a password, meaning nobody can access your data without the password. On the other hand, what if your notebook got stolen whilst it was in sleep mode? Is there any protection that the encryption can offer? Thanks

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  • Mac OS X Terminal not logging in

    - by Mr. Man
    I am running Mac OS X version 10.6.3 and when I open the terminal (with terminal.app or iterm) it just hangs on the login process. I've tried restarting, changing the startup command to /bin/bash, and deleting the terminal preference file. All to no avail.

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  • What could cause a huge packet loss in Ubuntu 9.10, for both wired and wireless?

    - by xzenox
    I was previously using 9.04 fine (and in fact, I am posting this from my old 9.04 live cd). I tested the following install steps in a virtualbox vm prior to following the sames ones to upgrade my laptop: Download/burn ubuntu minimal cd (12mb one) Install ubuntu minimal sudo apt-get update sudo apt-get upgrade sudo apt-get ubuntu-desktop ubuntu-standard In the VM worked fine and I found myself with a working 9.10 ubuntu, network worked fine and I was able to test my backups and DropBox without a hitch (host was 9.04). When I followed the same steps on my laptop, everything worked up to after 9.10 being installed and working. As far as I can tell, everything besides eth0/wireless works. For some reason, I am unable to access the internet. Ping reports that over 99% of packets get lost (over an hour or so of pinging). This means for example that if I try hard enough, I can load a webpage but only at the cost of much patience... This happens both for a wired and wireless connection to my wrt310n (updated with latest firmware). At first I thought that it could be related to the ipv6 issues ppl have been experiencing however even after disabling ipv6 at the kernel level (through grub), I still get the issue. I do not think this is related to DNS issues or the likes since even when I ping my ISP's gateway IP, I have the same amount of packet loss. No DNS resolving should be required there. Access to my router works peachy with no packet loss there. I've tried different MTU values but to no avail. Note that this issue affects every web-enabled application: firefox, ping, synaptic, etc. The same hardware/router combo works with 9.04 but not with 9.10. In fact, when I did: sudo apt-get ubuntu-desktop ubuntu-standard after 9.10 minimal was installed, it downloaded over 400mb of packages without a hitch so my guess is that one of those packages either in ubuntu-desktop or ubuntu-standard is causing havok. Thoughts?

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  • measuring microseconds a process runs in Linux

    - by John Kube
    I'm looking to get the number of microseconds that a process takes to execute. Does anybody know how to do this on a Linux system? (I would settle for milliseconds, if that's as good as I can get.) NOTE: I don't think the time command will work to the accuracy I'm looking for...

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  • Google Desktop Search problems - unable to disable indexing and no index status page

    - by Howiecamp
    I've been running Google Desktop (I've used both the regular and Enterprise versions) without issues on my Windows 7 64-bit PC for a long time with no issues. I just paved my PC and reinstalled Google Desktop (regular edition). Initially, I want to use it only for the CTRL-CTRL launcher capability - I don't want it to do any indexing. So I unchecked all the items in the configuration dialog as well as excluded c:. Despite this, it is indexing all the content on my hard drive as well as Outlook email, etc. In my previous installations I had the same options set and they worked properly. The other problem I have is that when you right-click on the Google Desktop system tray icon, there used to be an option for "Index Status" which showed you the percentage complete the index creation process was, as well as an option to clear and rebuild the index. Those are no longer there. I uninstalled the regular edition and installed the Enterprise Edition, but same problems. Any ideas?

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  • Unable to view data in notepad.

    - by Saran
    I have a java code that reads an excel file and writes it to a text file. When i get the output text file, I can see only symbols like this in the notepad. "????????????????????????????" But if i open the text file in wordpad or ms-word, the data is correctly displayed. What could be the error?

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  • Unable to boot directly to Mac OS X

    - by Prashant
    I was trying to install Windows 7 on my Macbook pro using bootcamp, after creating partition I found out that I missed my DVD at office desk. Later I deleted the partition, but when I restart the macbook it kept telling that "No bootable device found" even after deleting the partition, I'm expecting it to boot directly to Mac OSX. Is there any solution to fix this problem?

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  • Instant connection to wireless network but delayed internet access on Mediacom with Windows 7

    - by David
    I have Mediacom cable internet and their provided modem/wireless router a Cisco DPC3825. Each of the laptops experiencing the trouble have Windows 7 64-bit. When connecting to the wireless network each computer will take a second or two to connect and then toggle from "no internet access" to "internet access" however, no websites are accessible for about five minutes after connecting. After that, there aren't any problems. It happens on all 3 of the laptops I have available and none of them have problems on any other network. It seems like my phone doesn't have the delay issue when it connects. I've power cycled the modem/router along with a DNS flush. I have some of the DNS servers manually set to Google DNS addresses and one just default. I've contacted and had Mediacom support try all its tricks. They changed the SSID and password along with resetting the thing remotely a handful of times. It was installed just this month and seemed to pass the tech's checks upon installation. Nothing in the settings has been changed, but it's been exhibiting this problem from the get go. This guy seems to be having the same problem, but no solution was posted. http://www.dslreports.com/forum/r27372861-IA-Connection-to-Mediacom-wireless-Modem-no-internet- Help greatly appreciated.

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  • Good Audio Splitter

    - by Jeremy White
    I need to get audio from my computer's headphone jack and push the output to 2 sets of speakers. I have tried using a cheap splitter from Fry's, but one set of speakers ends up acting as a microphone (!?) for the other set of speakers. What's the best way to split headphone output and get best quality with no interference on each set of speakers? I would, of course, also be interested in why the cheap splitter causes one set of speakers to start acting as a microphone.

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  • gvim Cannot make changes, 'modifiable' is off issues with file explorer.

    - by nos
    In gvim using netrw(the file explorer), I usually middle click a file to open it in the last active window. This just leads to an error stating "Cannot make changes, 'modifiable' is off". Another middle click, and the file opens fine where I expect it to. All buffers are saved, there's no uncommuted changes anywhere. What causes this, and what can I do about it ? Here's a pic when I middle click a file:

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