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  • How to install Windows (x86/x64) on Linux (Ubuntu)

    - by yorrany
    I installed Ubuntu edition (10.04) on my windows 7, completely eliminating it to the original installation. After I was forced to reverse the process, but could not find tools or explanations of how to do it. To clarify the equipment, it is: a netbook, acer, no optical drive cd / dvd, the process should be fully via USB. I hope I was clear enough, count on the support of you. Thank you. -- Instalei a edição Ubuntu (10.04) sobre meu Windows 7, eliminando completamente a a instalação original. Depois fui forçado à reverter o processo, mas não encontrei ferramentas ou explicações de como fazê-lo. Para esclarecer sobre o equipamento, trata-se de: um netbook, acer, sem leitor óptico de cd/dvd, o processo deverá ser totalmente via USB. Espero ter sido bastante claro, conto com o suporte de vocês. Muito obrigado.

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  • How to install Windows (x86/x64) on Linux (Ubuntu)

    - by yorrany
    I installed Ubuntu edition (10.04) on my windows 7, completely eliminating it to the original installation. After I was forced to reverse the process, but could not find tools or explanations of how to do it. To clarify the equipment, it is: a netbook, acer, no optical drive cd / dvd, the process should be fully via USB. I hope I was clear enough, count on the support of you. Thank you. -- Instalei a edição Ubuntu (10.04) sobre meu Windows 7, eliminando completamente a a instalação original. Depois fui forçado à reverter o processo, mas não encontrei ferramentas ou explicações de como fazê-lo. Para esclarecer sobre o equipamento, trata-se de: um netbook, acer, sem leitor óptico de cd/dvd, o processo deverá ser totalmente via USB. Espero ter sido bastante claro, conto com o suporte de vocês. Muito obrigado.

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  • find command in Linux to locate pdf files

    - by Martin
    My goal is to find all pdf files on a remote machine, so I resort to the useful command find. So I type find ~ *.pdf or find ~ "*.pdf" and I get nothing. I do the same on my machine and I get nothing. I do a regular search from the menu on my machine and I find quite a few pdf files. Would somebody please tell me what am I doing wrong?

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  • free memory in Linux

    - by user32425
    Hi, I did free -tm on my system, and I got the output below. Is the free buffers/cache part of the used memory? And therefore we can consider it as free memory? total used free shared buffers cached Mem: 5721 5689 32 0 137 4664 -/+ buffers/cache: 887 4834 Swap: 6000 13 5987 Total: 11722 5703 6019 Thanks

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  • Linux LVM snapshot commit or revert?

    - by Shewfig
    Hi, I'm about to perform an experimental upgrade on my CentOS 5 server. If the upgrade fails, I want to be able to back out the changes to the filesystem. This scenario seems similar to the example in Section 3.8 of the LVM HOWTO for LVM2 read-write snapshots - but the example is rather lacking in actual how-to. 1) How would I commit the changes, merging them back into the original partition? 2) How would I revert the changes, restoring the filesystem back to its original state? Should I assume that I'll need to restart several services, if not outright reboot? 3) Is it possible to snapshot only certain directories on a partition, or is it a partition-wide operation? Thanks...

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  • Tri-head linux system with Xmonad: is it possible to have HW acceleration

    - by progo
    What means there exists to have three monitors, all controlled by Xmonad and have hardware 3D acceleration as well? I had the pleasure of using three monitors earlier this year, and while Xmonad and Xinerama handle three monitors easily, I had to throw in an extra display driver, and also let go of Nvidia's own TwinView (which is a hack on Xinerama). This left me with no HW acceleration and some flickering as double buffering wouldn't work with certain applications. However, the three monitors handle so beautifully that I had hard time coming back to two. I understand the easiest way to achieve HW-accelerated tri-head combo is to split into two Xorgs. I wouldn't be able to switch windows between the Xorgs, so I'm not really into this solution. What's more, having a cheap and old PCI card along with even slightly better PCIe seemed to slow things down. Even if I occasionally disabled the third monitor from Xorg configure, I couldn't get HW acceleration to work. Only after I physically disconnected the old PCI card, I could get the games back in business. Would a Matrox Dual/Tri-head2go and a powerful Nvidia GPU do the trick? I understand Xmonad can be configured to "believe" that a "single" (as Dualhead2Go will merge) 3360x1050 display is actually two different ones? So that Xmonad's Mod-w and Mod-e would work properly there.

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  • Managing Linux Directory Permissions & SFTP

    - by Dizzle
    Good morning; I have a RHEL 5.7 web server configured to allow SSH/SFTP only by specific groups. I'd like for content managers to upload content to their respective directories and have that content inherit the user/group ownership of the directory regardless of upload method or application. For example: John is in group "web" for SSH/SFTP rights and "finance" for directory permissions, and uploads to directory "webstuff" via SFTP. Directory "webstuff" has permissions of "2760" (rwxrws---), and ownership of "apache:finance". If John uploads an update to an existing file in "webstuff", the ownership of the file stays at "apache:finance". If John uploads a new file to "webstuff", the ownership of the file is "john:finance". My desire is to have any file from John uploaded to "webstuff" to change to the directory's owner. I've tried with setuid and setgid both set, but the user-ownership didn't take. I've seen mentions on ServerFault of using ACL's, or a chrooted jail for SFTP but I have yet to configure and test them, and I don't know if they're a viable solution (they could be, I just don't know because I've never done either). Any thoughts and assistance would be greatly appreciated.

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  • Which will give more free RAM to linux?

    - by Linda Thomas
    Trying to avoid some issues so I've been trying to learn vm. in kernel tuning but still a little confused even after googling. The lower background_ratio is the sooner the flushes? the lower dirty_ratio is the less dirty ram that is kept, right vm.dirty_ratio = 20 vm.dirty_background_ratio = 1 or vm.dirty_ratio = 60 vm.dirty_background_ratio = 20 or vm.dirty_ratio = 20 vm.dirty_background_ratio = 10 or vm.dirty_ratio = 20 vm.dirty_background_ratio = 5

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  • Best way to grow Linux software RAID 1 to RAID 10

    - by Hans Malherbe
    mdadm does not seem to support growing an array from level 1 to level 10. I have two disks in RAID 1. I want to add two new disks and convert the array to a four disk RAID 10 array. My current strategy: Make good backup. Create a degraded 4 disk RAID 10 array with two missing disks. rsync the RAID 1 array with the RAID 10 array. fail and remove one disk from the RAID 1 array. Add the available disk to the RAID 10 array and wait for resynch to complete. Destroy the RAID 1 array and add the last disk to the RAID 10 array. The problem is the lack of redundancy at step 5. Is there a better way?

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  • Autodetect/mount SDCards and run script for them on Linux

    - by Brendan
    Hey Everyone, I'm currently running SME Server, and need to have a script run upon the attachment of SD Cards to my server. The script itself works fine (it copies the contents of the cards), but the automounting and execution of the script is where I'm having issues. The I have a USB hub consisting of 10 USB ports; that shows up as: [root@server ~]# lsusb Bus 004 Device 002: ID 0000:0000 Bus 004 Device 001: ID 0000:0000 Bus 003 Device 001: ID 0000:0000 Bus 002 Device 001: ID 0000:0000 Bus 001 Device 055: ID 1a40:0101 TERMINUS TECHNOLOGY INC. Bus 001 Device 051: ID 1a40:0101 TERMINUS TECHNOLOGY INC. Bus 001 Device 050: ID 1a40:0101 TERMINUS TECHNOLOGY INC. Bus 001 Device 001: ID 0000:0000 (The hub is the TERMINUS TECHNOLOGY INC entries) As I cannot plug SD Cards directly into the server; I use a USB to SD card attachement (10 of them) plugged into the hub to read the cards. Upon pluggig the 10 attachments (without cards) into the hub; lsusb yields the following: [root@server ~]# lsusb Bus 004 Device 002: ID 0000:0000 Bus 004 Device 001: ID 0000:0000 Bus 003 Device 001: ID 0000:0000 Bus 002 Device 001: ID 0000:0000 Bus 001 Device 073: ID 05e3:0723 Genesys Logic, Inc. Bus 001 Device 072: ID 05e3:0723 Genesys Logic, Inc. Bus 001 Device 071: ID 05e3:0723 Genesys Logic, Inc. Bus 001 Device 070: ID 05e3:0723 Genesys Logic, Inc. Bus 001 Device 069: ID 05e3:0723 Genesys Logic, Inc. Bus 001 Device 068: ID 05e3:0723 Genesys Logic, Inc. Bus 001 Device 067: ID 05e3:0723 Genesys Logic, Inc. Bus 001 Device 066: ID 05e3:0723 Genesys Logic, Inc. Bus 001 Device 065: ID 05e3:0723 Genesys Logic, Inc. Bus 001 Device 064: ID 05e3:0723 Genesys Logic, Inc. Bus 001 Device 055: ID 1a40:0101 TERMINUS TECHNOLOGY INC. Bus 001 Device 051: ID 1a40:0101 TERMINUS TECHNOLOGY INC. Bus 001 Device 050: ID 1a40:0101 TERMINUS TECHNOLOGY INC. Bus 001 Device 001: ID 0000:0000 As you can see, the readers are the "Gensys Logic, Inc" entries. Plugging in an SD card to a reader doesn't affect lsusb (it reads exactly as above), however my system recognises the cards fine; as indicated by dmesg: Attached scsi generic sg11 at scsi54, channel 0, id 0, lun 0, type 0 USB Mass Storage device found at 73 SCSI device sdd: 31388672 512-byte hdwr sectors (16071 MB) sdd: Write Protect is on sdd: Mode Sense: 03 00 80 00 sdd: assuming drive cache: write through SCSI device sdd: 31388672 512-byte hdwr sectors (16071 MB) sdd: Write Protect is on sdd: Mode Sense: 03 00 80 00 sdd: assuming drive cache: write through sdd: sdd1 SCSI device sdd: 31388672 512-byte hdwr sectors (16071 MB) sdd: Write Protect is on sdd: Mode Sense: 03 00 80 00 sdd: assuming drive cache: write through SCSI device sdd: 31388672 512-byte hdwr sectors (16071 MB) sdd: Write Protect is on sdd: Mode Sense: 03 00 80 00 sdd: assuming drive cache: write through sdd: sdd1 SCSI device sdd: 31388672 512-byte hdwr sectors (16071 MB) sdd: Write Protect is on sdd: Mode Sense: 03 00 80 00 sdd: assuming drive cache: write through SCSI device sdd: 31388672 512-byte hdwr sectors (16071 MB) sdd: Write Protect is on sdd: Mode Sense: 03 00 80 00 sdd: assuming drive cache: write through sdd: sdd1 If I manually mount sdd1 (mount /dev/sdd1 /somedirectory/) this works fine. What I'm really after is a solution that automounts each of the cards as they are inputted into the reader; and executes a script for them (this will involve copying their contents to another directory). My problem is that I don't know how to do this; I don't think udev will work as the USB devices don't change; if I could somehow get udev working with /dev/disk/by-path/ however I think this is doable (it seems to keep constant entries). ls /dev/disk returns: pci-0000:00:1d.7-usb-0:4.1.1.1:1.0-scsi-0:0:0:0 pci-0000:00:1d.7-usb-0:4.1.1.2:1.0-scsi-0:0:0:0 pci-0000:00:1d.7-usb-0:4.1.1.3:1.0-scsi-0:0:0:0 pci-0000:00:1d.7-usb-0:4.1.1.4:1.0-scsi-0:0:0:0 pci-0000:00:1d.7-usb-0:4.1.2:1.0-scsi-0:0:0:0 pci-0000:00:1d.7-usb-0:4.1.3:1.0-scsi-0:0:0:0 pci-0000:00:1d.7-usb-0:4.1.4:1.0-scsi-0:0:0:0 pci-0000:00:1d.7-usb-0:4.2:1.0-scsi-0:0:0:0 pci-0000:00:1d.7-usb-0:4.3:1.0-scsi-0:0:0:0 pci-0000:00:1d.7-usb-0:4.4:1.0-scsi-0:0:0:0 pci-0000:00:1d.7-usb-0:4.4:1.0-scsi-0:0:0:0-part1 pci-0000:0b:01.0-scsi-0:0:1:0 pci-0000:0b:01.0-scsi-0:0:1:0-part1 pci-0000:0b:01.0-scsi-0:0:1:0-part2 From above, we can see I have only one card plugged into the reader (pci-0000:00:1d.7-usb-0:4.4:1.0-scsi-0:0:0:0-part1). Going mount /dev/disk/by-path/pci-0000\:00\:1d.7-usb-0\:4.4\:1.0-scsi-0\:0\:0\:0-part1 Works and places the card under /media/usbdisk/, however: mount /dev/disk/by-path/pci-0000\:00\:1d.7-usb-0\:4.4\:1.0-scsi-0\:0\:0\:0-part1 slot1/ doesn't work, and returns "mount: can't get address for /dev/disk/by-path/pci-0000" Any ideas and solutions would be great, I've seen the knowledge of a lot of the guys on here before so I'm hopeful someone can help me out. Thanks

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  • Application upgrade triggered from web application on Ubuntu/Linux

    - by Witek
    On my ubuntu server I have an application MyApp which runs as a daemon with its own user myapp. Then I have a web application MyPortal which runs in apace httpd as user www-data. This application serves a web page with a Redeploy MyApp button. When clicking this button I want to start the script redeploymyapp. This script stops the MyApp deamon, upgrades the application and starts the daemon again. The problem is, that the redeploymyapp script needs to be executed by the user myapp, while MyPortal is running as www-data. What is te best way to solve this problem?

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  • All users of a group can edit each others files (Linux)

    - by Xeoncross
    I want anyone in group www-data to have write access to /var/www. For example, if 'a' and 'b' are in group www-data and 'a' creates a file in /var/www - then 'b' will be able to edit it. The problem is that I create files that PHP and Apache can't edit - and they create files I can't edit without sudo. I changed the umask setting /etc/profile from umask 022 to umask 002. Is this a safe and proper way to handle this?

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  • Can't start apache in linux, because of proxy module

    - by Silmaril89
    When I try to start apache or run the command, httpd -M each fail and print the following error: httpd: Syntax error on line 137 of /etc/httpd/conf/httpd.conf: Syntax error on line 2 of /etc/httpd/conf.d/proxy_ajp.conf: Cannot load /etc/httpd/modules/mod_proxy_ajp.so into server: /etc/httpd/modules/mod_proxy_ajp.so: undefined symbol: proxy_module Any ideas on how to fix this? Thanks.

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  • What's the best self-tracking software for Linux?

    - by trench
    I'm looking for a way to track myself and receive quality data upon which I can write future scripts/programs. For example, I use Google Reader a lot. I'd like to track the hrefs that garner my clicks. Further, I'd like to drop all of the words of each href into a database where they can be stacked in a hierarchical manner. At the end of the week I want to know that "Ubuntu" garnered 448 clicks and "Cheetos" garnered 2. :) That's just one example... I'd like this tracking and data-collecting to extend beyond my browser. I know writing something to do this myself wouldn't be too awfully difficult but if something already exists I'd happily use it. Thanks in advance. Primary OS: Ubuntu 10.04

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  • Linux route add between static LAN and Wifi Gateway

    - by Hamza
    I have two local machines connected to each other via wired ethernet and one of those machines is also connected to a wifi network which provides internet access. A pseudo-graphical representation of the topology is as follows: (PC2)----------(PC1)---------(Wifi Gateway) 192.168.2.x 10.0.0.x The configuration on PC2 is: iface eth0 inet static address 192.168.2.2 network 192.168.2.0 netmask 255.255.255.0 gateway 192.168.2.1 ...and the configuration on PC1 is: iface eth0 inet static address 192.168.2.1 network 192.168.2.0 netmask 255.255.255.0 gateway 192.168.2.1 On PC1, I've added a default route for wlan0 as I couldn't access the internet otherwise: route add default gw 10.0.0.1 wlan0 And also tried setting the gateway for the 192.168.2.x network using: route add -net 192.168.2.0 netmask 255.255.255.0 gw 10.0.0.1 But I still can't access internet from PC2. Edit I don't have access to the wifi gateway.

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  • Does Moonlight work on linux in Google Chrome?

    - by Matthew
    I'm trying to install Moonlight, but I can only find instructions for setting it up in Firefox. And in the Ubuntu 10.04 repositories, I found a "moonlight-plugin-mozilla" package, but not "moonlight-plugin-chrome" (or similar). Is there any way to do this, or does Moonlight not yet run in Chrome?

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  • Recover backup copy of a ubuntu linux installation on a usb stick using dd

    - by user10826
    Hi, I installed Ubuntu 10.04 on a usb stick in persistent install mode. So I could boot the laptop or my desktop computer with the stick, at boot time. Once I needed the 8GB stick for another purposes so I thought about coyping it to my desktop doing from mac os x: dd if=/dev/disks3s of=/Users/jack/Desktop/usb_copy Now I am trying to do the opposite, after having used the stick, which was formatted to NTFS, just doing dd if=/Users/jack/Desktop/usb_copy of=/dev/disks3s but although I can see that almost of the files are there, I can not boot again. IT is also strange the the file permissions are kind of strange, something like _user What can I do ? Thanks

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  • How to use WPA2 client mode in the Linux-based Cisco WAP4410N access point

    - by joechip
    I have a Cisco WAP4410N access point that I want to use as a client to connect to a WPA2 wireless network (for WLAN service monitoring purposes). Supposedly this access point supports a "Wireless Client/Repeater" mode that allows to do this. The Repeater function is optional (I have that box unchecked so that nobody can connect to this access point wirelessly). I have verified through SSH that the access point gets configured as a client and not as a Master. But it never associates to the SSID I ask it to. This is what iwconfig shows: ath04 IEEE 802.11ng ESSID:"myownssid" Mode:Managed Channel:0 Access Point: Not-Associated Bit Rate:0 kb/s Tx-Power:14 dBm Sensitivity=1/3 Retry:off RTS thr:off Fragment thr:off Encryption key:off Power Management:off Link Quality=0/94 Signal level=161/162 Noise level=161/161 Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0 Although I've never done this from the command line, I suppose I could use wpa_supplicant or wpa_client to associate it, but I don't know how to do that without editing configuration files and the filesystem is readonly. Besides, I would have to run those commands manually after every reboot. I'd like to know how to do this the Cisco way, if possible. If not, any trick to make this work would be useful. Edit: This is with the latest firmware, 2.0.4.2. And I found that not all of the filesystem is readonly, since /var and /tmp are mounted with type ramfs.

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  • Linux WD30EZRX WD Green HDD & Blacx Duet 5G Usb

    - by Adam
    I have connected up an WD30EZRX WD Green HDD to a Thermaltake Blacx Duet 5G USB dock in Ubuntu 12.04. Every thing seems fine except when the HDD idles it seems to have error ls: reading directory .: Input/output error after a while and is only fixed by unmounting and remounting the drive as root. I have the following line in /etc/fstab UUID=AAF670E9F670B6E3 /media/3TB ntfs defaults,user,auto 0 0 I have noticed that it seems to go between /dev/sdc2 and /dev/sdd2 devices on remount. I did copy 1TB last night without issue in 1 sitting. But after x mins of idle it has remount issue. Any tips/suggestions on how to proceed would be appreciated. Spent most of the night googling and all its done is made me sad. Edit (tried as suggested): root@mediaserver:/media/3TB# sudo hdparm -B 255 -S 253 /dev/sdd2 /dev/sdd2: setting Advanced Power Management level to disabled HDIO_DRIVE_CMD failed: Input/output error setting standby to 253 (vendor-specific) APM_level = not supported Seems as if that didn't help with this particular drive.

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  • How can I diff two Redhat Linux servers?

    - by Stuart Woodward
    I have two servers that have should have the same setup except for known differences. By running: find / \( -path /proc -o -path /sys -o -path /dev \) -prune -o -print | sort > allfiles.txt I can find a list of all the files on one server and compare it against the list of files on the the other server. This will show me the differences in the names of the files that reside on the servers. What I really want to do is run a checksum on all the files on both of the servers and compare them to also find where the contents are different. e.g find / \( -path /proc -o -path /sys -o -path /dev \) -prune -o -print | xargs /usr/bin/sha1sum Is this a sensible way to do this? I was thinking that rysnc already has most of this functionality but can it be used to provide the list of differences?

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  • NVRAM for journals on Linux?

    - by symcbean
    I've been thinking about ways of speeding up disk I/O, and one of the bottlenecks I keep coming back to is the journal. There's an obvious benefit to using an SSD for the journal - over and above just write caching unless of course I just disable the journal with the write cache (after all devicemapper doesn't seem to support barriers). In order to get the benefits from using a BB write cache on the controller, then I'd need to disable journalling - but then the OS should try to fsck the system after an outage. Of course if the OS knows what's in the batter-backed memory then it could use it as the journal - but that means it must be exposed as a block device and only be under the control of the operating system. However I've not been able to find a suitable low-cost device (no, write-levelling for Flash is not adequate for a journal, at least one which uses Smartmedia). While there's no end of flash devices, disk/array controllers with BB write caches, so far I've not found anything which just gives me non-volatile memory addressable as a block storage device.

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