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• Linux compilers for C/C++ on AMD "Bulldozer" CPUs like the Interlagos [closed]

  - by jstarek

  I am looking for a Linux compiler for C/C++ code that supports AMDs new "Bulldozer" architecture and produces efficient binaries for the Interlagos series Opterons. This seems to be a bit difficult because of the peculiarities of the Bulldozer microarchitecture. While AMD has a whitepaper with some details, I would like to see some independent analyses. The relevant paper from HeCToR focuses mostly on job placement and scheduling, which is an area we already investigate. So, who can recommend a good compiler comparison for Bulldozers running Linux? Does anyone have well-described benchmarks?

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• Is there a way to identify the device data is being received from? (python)

  - by Ed Prince

  Summary I have an MT4000 device connected to my computer using the serial port ttyS0. This is broadcasting data which is being received and read by a udp listener written in Python. I am also sending data manually through the terminal using a bash script I wrote. The Goal Is it possible to identify the device being used? The aim is for a web-page to allow the user to select which device they wish to see the data being sent. I would rather achieve this by directly identifying the device rather than saying anything from ttyS0, in case a different device is plugged in on that port. The Answer Is this possible, and if so, how? Everything I have found so far, is on identifying through a specific port.

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• Multiple VLANs on a single subnet

  - by mstaessen

  I would like to establish the setup shown below. The image is taken from (http://gcharriere.com/blog/?p=620) and explains how to set this up on a brocade device. I would like to use an ubuntu server to do the routing. Right now, the switch and the server/router are connected with a trunk and the server uses the vlan package, kernel module and (inner) subnets for routing. I would like that: no IP addresses get lost in the subnetting (outer subnet is /26, inner subnets are /28) I don't want the rigorous subdivision of my outer subnet. I want to assign a VLAN to any IP in the outer subnet. How do I need to configure my interfaces? What is the "ubuntu" translation of "ip follow ve"? Thanks!

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• mount fstab partition with public access

  - by Mikhail

  How do I specify that an fstab mount-point should be public? I want /mnt/windows to be accessible to normal users. I believe I am using ntfs-3g. If I set the /mnt/windows to 777 will it be publicly accessible without changing the permissions on the NTFS disk? /dev/sdb4 /mnt/windows ntfs noatime 0 1 /dev/sdb5 / ext4 noatime 0 1 UUID=5AA4-168D /boot/efi vfat defaults 0 1 and localhost my_computer # stat /mnt/windows/ File: '/mnt/windows/' Size: 12288 Blocks: 24 IO Block: 512 directory Device: 814h/2068d Inode: 5 Links: 1 Access: (0700/drwx------) Uid: ( 0/ root) Gid: ( 0/ root) Access: 2014-08-21 18:29:13.597722200 -0500 Modify: 2014-08-21 18:29:13.597722200 -0500 Change: 2014-08-21 18:29:13.597722200 -0500 Birth: -

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• Webcam microphone input in Gnome/pulseaudio

  - by sdaau

  Just got a "Trust" webcam, which gets recognized on my Ubuntu Lucid. It has a built in microphone - which also gets recognized - however, I cannot really get it to act as the system microphone input? Here are some screenshots of what is shown by gnome-volume-control: The default window shows Trust webcam - which has two profiles: "Analog Mono Input" and "Off" - of course, I have it on "Analog Mono Input": However, on the "Input" tab - there is no matching "device for sound input" - neither a matching connector: Then I installed pavucontrol - but that doesn't show that much more; it tells first that gnome-volume-control reads from "Internal Audio Analog Stereo": Then in "Input devices" tab, there is again nothing resembling the mic input from webcam: Finally, under "Configuration" tab, the "Trust" webcam shows, but even if its profile is on "Analog Mono Input", nothing much happens:   So, does anyone know how I could get this webcam microphone to be recognized as the system input? Many thanks in advance for any answers, Cheers!

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• Recommending simple appliance for DansGuardian, iptables, snort inline

  - by SRobertJames

  I'm currently using a Linksys E2000 with dd-wrt. I'd like to add DansGuardian for Content Filtering and snort-inline for IPS; but those require a more powerful box (mainly, more storage). Can you recommend a good device to use? I'm open to both overwrite-the-firmware (like dd-wrt) and designed-to-be-customized boxes. Requirements: 1. 5+ Ethernet ports, pref. GigE 2. small form factor 3. No noise (office environment) 4. low power 5. Not sure about 802.11 wireless Budget < $400, pref. less.

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• How to tell if OpenGL is really working in Ubuntu 10.04

  - by Jonathan

  I have a lenovo S9e running Intel integrated graphics. Here is my lspci output related to the graphics: 00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller (rev 03) Subsystem: Lenovo Device 3870 Flags: bus master, fast devsel, latency 0 Memory at f0580000 (32-bit, non-prefetchable) [size=512K] Capabilities: [d0] Power Management version 2 I want to know how I can make sure OpenGL support is running in full on an Ubuntu 10.04 installation. I have a few hints to think that it is not: The "Desktop Effects" will not load Apps such as stardock, when attempting to use OpenGL rendering, will display black boxes instead of transparency In the games Pioneers, the number-tile icons are suspiciously just black circles Windows games running with Wine will only support software rendering, not hardware rendering When I boot into a Knoppix LiveCD, the desktop effects do work, splendidly, meaning compiz detects my computer as capable. My problem with troubleshooting is that Canonical has basically eliminated the conf-file-based mechanism of X11 as far as I can tell, thus making it even harder to ensure graphics modules are loading properly. How do I debug and test OpenGL on m Ubuntu 10.04 installation?

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• Easiest way to change document root for XAMPP(Linux)

  - by alfredwesterveld

  The easiest way to change document root from /opt/lampp/htdocs to /home/alfred/htdocs for XAMPP(linux) in a step by step guide?

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• Monitor Bonded Interface for Disconnection

  - by bradlis7

  I am trying to monitor for network failures on a machine, and one portion of that is to monitor interfaces that are intended to be active also be "RUNNING". An Ethernet port, such as eth0, will say "RUNNING" if it is physically connected to another device. The problem lies in the bonded interfaces, such as bond0. If all of the ethernet devices are disconnected, it still says that it is running, and it is still pingable. Is this by design, or is my system setup incorrectly? Does the miimon option have something to do with this?

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• Load Testing Linux Virtual Server

  - by Anubhav Agarwal

  I have configured a Linux virtual network with following configuration 172.17.6.112- VIP 172.17.6.111- Linux Director | |----------172.17.6.113 --- Real Server 1 |----------172.17.6.114 --- Real Server 2 I am using direct routing technique. I am unable to test my LVS network. Are there some good scripts/softwares available for load testing. I am running apache2.0 service on them. I came across with testlvs on the internet but am unable to understand its documentation. Are there more simpler ones I want to test the response time of server using various scheduling algorithms .

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• Mounting both /dev/sda and /dev/sda1 - how can this be?

  - by itsadok

  I work on an Amazon EC2 instance that somebody else set up. We have an EBS volume mounted on /dev/sda, even though the root device is already on /dev/sda1, and we're also using `/dev/sda2' user@server:~$ mount /dev/sda1 on / type ext3 (rw) ... (snip) /dev/sda2 on /mnt type ext3 (rw) /dev/sda on /vol type xfs (rw,noatime) ... This doesn't seem to fit with what I know about the way /dev/ works. How is this possible, and more importantly: will this cause trouble in the future? I'm running ubuntu 9.04 jaunty.

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• Facing gestures in Linux mint Chrome Browser

  - by aravind.udayashankara

  I am using Linux mint OS since an Year , I use to consistently download updates and install , I use chrome as a default browser , when ever I open youtube and watch some video , I listen to some gestures in sound ( say repeated lyrics of song ) while it is playing , In firefox it is working fine . What is the problem am I missing any plugin , AFAIK Chrome doesn't need a flash player plug in , It has a built in flash player . IS that the problem ? And also previously I was not facing this , recently I started using Cinimon UI centOS after this all these kind of problems started MY hard ware is 64 bit intel core i3 and also I have installed linux mint 64 bit Please let me know what is the problem and how to fix this . Thanks in advance for responding to this post

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• rsync remote to local automatic backup

  - by Mark Molina

  Because all my work is stored on a remote server I would like to auto backup my server monthly and weekly. My server is running Centos 5.5 and while searching the web I'm found a tool named rsync. I got my first update manually by using this command in terminal: sudo rsync -chavzP --stats USERNAME@IPADDRES: PATH_TO_BACKUP LOCAL_PATH_TO_BACKUP I then prompt my password for that user and bob's my uncle. This backups the necessary files from my remote server to my local device but does somebody know how I can automate this? Like automatic running this script every sunday? EDIT I forgot to mention that I let direct admin backup the files I need and then copy those files from the remote server to a local server.

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• Root certificate authority works windows/linux but not mac osx - (malformed)

  - by AKwhat

  I have created a self-signed root certificate authority which if I install onto windows, linux, or even using the certificate store in firefox (windows/linux/macosx) will work perfectly with my terminating proxy. I have installed it into the system keychain and I have set the certificate to always trust. Within the chrome browser details it says "The certificate that Chrome received during this connection attempt is not formatted correctly, so Chrome cannot use it to protect your information. Error type: Malformed certificate" I used this code to create the certificate: openssl genrsa -des3 -passout pass:***** -out private/server.key 4096 openssl req -batch -passin pass:***** -new -x509 -nodes -sha1 -days 3600 -key private/server.key -out server.crt -config ../openssl.cnf If the issue is NOT that it is malformed (because it works everywhere else) then what else could it be? Am I installing it incorrectly? Update I tried changing the certificate attributes, but to no avail: openssl genrsa -des -passout pass:***** -out private/server.key 2048 openssl req -batch -passin pass:***** -new -x509 -nodes -sha256 -days 3600 -key private/server.key -out server.crt -config ../openssl.cnf

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• OSX Lion - Stuck in Drag mode and mouse click events are not going through. Can I manually generate a mouseup event?

  - by Yuji Tomita

  My mouse is stuck in "drag" mode. This generally happens in Photoshop, but happens dragging files and such as well. Clicking rapidly here and there generally solves the problem. Sometimes though, it won't go away until a restart. Unplugging devices, etc., doesn't do anything. For example, right now, my mouse moves but can not click anything so I am using the keyboard to navigate this site. Is there a way to "reset" however the OS stores mouse states? Can I manually fire off a MouseUp event? It's strange that even when human input devices are unplugged, the files are still in drag state.

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• USB forwarding from dom0 to domU

  - by Karolis T.

  What are my options to forward two USB connected phones to xen guest? I've read about PCI-passthrough http://www.wlug.org.nz/XenPciPassthrough, but I'm sure usb controller in the server isn't a pci card. There's device level forwarding, but I need to forward two devices, this here doesn't say how to do it: http://www.olivetalks.com/2008/02/03/usb-forwarding-on-xen-it-just-does-not-work/ Would something as simple as: usbdevice = [ 'host:xxx', 'host:yyy', ] work? EDIT: I'm now starting a bounty. This is really important for me and for other people also, hoping someone who have this resolved will be able to help.

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• having 2 ip's on a debian 7 box

  - by David

  I just installed Debian Wheezy on my homeserver. I want to assign 2 ip's to it on the same network interface, 1 static ip (eth0) and 1 dynamic ip (eth0:1). I know it doesn't make much sense but I need it to test something. I edited my /etc/network/interfaces to be like this: auto lo eth0 eth0:1 iface lo inet loopback iface eth0 inet static address 192.168.178.240 network 192.168.178.0 netmask 255.255.255.0 broadcast 192.168.178.255 gateway 192.168.178.1 iface eth0:1 inet dhcp when I bring up eth0:1 (ifup eth0:1) I get the following error (eth0 works fine) Bind socket to interface: No such device Failed to bring up eth0:1. is it even possible to have a dynamic and static ip on the same network adapter?

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• Not able to connect to internet in RHEL 5

  - by chankey007

  I just installed red hat enterprise 5 in my laptop and on desktop both. In desktop it is working fine but in laptop it is not showing the eth device. (I tried ifconfig only lo is there). I tried ifup eth0 still nothing happened. The network service in /etc/sysconfig/network-scripts/ifcfg-eth0 and in /etc/sysconfig/network are enable. I had ubuntu in my laptop before and I faced same problem with that too. Is there any problem with my laptop? I have my system on dual boot and in win7 networking is running fine. I am not able to connect to the internet only, other devices are working fine. System conf: Sony vaio E series. 3 GB RAM, intel core i3 2.13 GHZ.

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• Not able to connect to internet in RHEL 5

  - by chankey007

  I just installed red hat enterprise 5 in my laptop and on desktop both. In desktop it is working fine but in laptop it is not showing the eth device. (I tried ifconfig only lo is there). I tried ifup eth0 still nothing happened. The network service in /etc/sysconfig/network-scripts/ifcfg-eth0 and in /etc/sysconfig/network are enable. I had ubuntu in my laptop before and I faced same problem with that too. Is there any problem with my laptop? I have my system on dual boot and in win7 networking is running fine. I am not able to connect to the internet only, other devices are working fine. System conf: Sony vaio E series. 3 GB RAM, intel core i3 2.13 GHZ.

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• Which Linux variant to install on VirtualBox?

  - by Rohit

  Answer to one of my previous post suggested me to use VirtualBox for Sandbox experiments with malware files. I installed VirtualBox and now it demands a bootable CD to install the OS. I want Linux to be installed in it. I guess Debian or Ubuntu are the most popular variant. I want an ISO image that creates a bootable CD or a single DVD with that Linux variant and should include only the basic installation not much features. It should fit in at least 3 or 3.5 GB. Which one is more compatible with VirtualBox?

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• Configuring Linux Network

  - by Reiler

  Hi I'm working on some software, that runs on a Centos 5.xx installation. I'ts not allowed for our customers to log in to Linux, everything is done from Windows applications, developed by us. So we have build a frontend for the user to configure network setup: Static/DHCP, ip-address, gateway, DNS, Hostname. Right now I let the user enter the information in the Windows app, and then write it on the Linux server like this: Write to /etc/resolv.conf: Nameserver Write to /etc/sysconfig/network: Gateway and Hostname Write to /etc/sysconfig/network-scripts/ifcfg-eth0: Ipaddress, Netmask, Bootproto(DHCP or Static) I also (after some time) found out that I was unable to send mail, unless I wrote in /etc/hosts: 127.0.0.1 Hostname All this seems to work, but is there a better/easier way to do this? Also, I read the network configuration nearly the same way, but if I use DHCP, I miss som information, for instance the Ip-address. I know that I can get some information from the commandline (ifconfig), but I dont get for instance Hostname, Gateway and DNS. Is there a commandline tool that will display this?

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• Determine which version of linux/unix/darwin I have

  - by John

  I have root ssh/terminal access to a linux server. How do I determine which version of centos I have? Some people suggested I run the command cat /etc/redhat-release but I got an error saying file not found. In fact, i'm not entirely sure i'm even using CentOS. That's what some suggested it might be. Here's a list of commands I tried that gave me no file or directory error: cat /etc/*release* cat /etc/*version* cat /proc/*version* cat /proc/*release* Here's a list of linux commands that do not exist: lsb_release: command not found wget: command not found yum: command not found

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• How to change Windows defaulf language to another language, but temporarily?

  - by metal gear solid

  How to change Windows default language temporarily? for example English to Russian. but for some time and without loosing anything. I will revert back to English. I want to change Language settings everywhere. In programs, Keyboard input, browsers etc.

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• Setting Linux UID on NFS volume from EMC NX4

  - by ethrbunny

  I have an EMC NX4 from which there are several CIFS shares with corresponding NFS mount points. The CIFS user ids seem fine but when viewed from Linux they are all 327xx numbers and can't be set from the file system. (IE CHOWN doesn't work - permission denied). On our other (older) EMC devices we used an MMC app to set the Linux UID for each user. I don't seem to have such an app on the 'Applications and Tools' CD for this new device. Is there some other method for setting these? Did I setup the system incorrectly?

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• Unable to use cloned VM, OpenSUSE, VirtualBox

  - by Kremchik

  I've cloned a VM and now while booting it I see a message: Trying manual resume from /dev/sda1 Invoking userspace resume from /dev/sda1 resume: libgcrypt version: 1.5.0 Trying manual resume from /dev/sda1 invoking in-kernel resume from /dev/sda1 Waiting for device /dev/disk/by-id/ata-VBOX_HARDDISK_.....-part2 to appear: ... Could not find /dev/disk/...-part2 Want me to fall back to /dev/disk/...-part2 (Y/n) If I press 'Y' it tries to boot again with failure, then exits to /bin/sh. If I press 'n' it exits to /bin/sh immediately. I've read a solution here: http://diggerpage.blogspot.com/2011/11/cannot-boot-opensuse-12-after-cloning.html but I don't understand how to access files on disk to edit /etc/fstab and /boot/grub/menu.lst?

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