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• RAID across SAS controller ports

  - by BlueGene

  Hi, I'm managing a HP DL360 G5 machine. It has a SAS controller with two ports. Port 1 is attached to 4 drive bays and Port 2 has 2 bays. The machine currently has 3 drives connected to Port 1 with RAID 5 configuration. I'm trying to max out the bays by adding 1 disk in port 1 and 2 in port 2. Can I group those three disks(1 disk-port, 2 disks-port 2) in a RAID 5 configuration?

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• Strange strace and setuid behaviour: permission denied under strace, but not running normally.

  - by Autopulated

  This is related to this question. I have a script (fix-permissions.sh) that fixes some file permissions: #! /bin/bash sudo chown -R person:group /path/ sudo chmod -R g+rw /path/ And a small c program to run this, which is setuided: #include "sys/types.h" #include "unistd.h" int main(){ setuid(geteuid()); return system("/path/fix-permissions.sh"); } Directory: -rwsr-xr-x 1 root root 7228 Feb 19 17:33 fix-permissions -rwx--x--x 1 root root 112 Feb 19 13:38 fix-permissions.sh If I do this, everything seems fine, and the permissions do get correctly fixed: james $ sudo su someone-else someone-else $ ./fix-permissions but if I use strace, I get: someone-else $ strace ./fix-permissions /bin/bash: /path/fix-permissions.sh: Permission denied It's interesting to note that I get the same permission denied error with an identical setup (permissions, c program), but a different script, even when not using strace. Is this some kind of heureustic magic behaviour in setuid that I'm uncovering? How should I figure out what's going on? System is Ubuntu 10.04.2 LTS, Linux 2.6.32.26-kvm-i386-20101122 #1 SMP

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• Networking not working in Windows 7 - "The account specified for this service is different from the account specified for other services"

  - by tog22

  I have a homebuilt computer with a GA-Z68MA-D2H-B3 motherboard with a Realtek RTL8111E LAN chip. Ethernet was working fine in Windows 7 until I reinstalled this OS, but now it's stopped, while still working in other OSes. I've tried reinstalling drivers from both the Gigabyte and Realtek sites to no avail; I've also plugged in and installed an Asus USB-N13 wifi dongle and this doesn't work oddly. How can I diagnose and fix this issue? In 'Network and Sharing Center' says "The account specified for this service is different from the account specified for other services running in the same process" under the heading 'Unknown'. Following the advice at http://www.sevenforums.com/network-sharing/130159-dependency-service-group-failed-start.html#post1122627 I've gone to 'Control Panel= Admin Tools= Services' and ensured the services listed at that URL are started (one - IIRC 'Come+ Event System' refused to start as user 'Local services' so I've had to set it to log on with the 'Local system account'... I suspect this may be part of the problem).

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• What can go wrong with a GLIBC upgrade?

  - by Sevenless

  I recently installed a piece of software that my group needs for a research project starting next September. Turns out the software has a known crash bug when used with glibc 2.12.1. My boss asked if we can upgrade glibc on the server that's supposed to run it. Cue my skeptical silence.... At some point, I got it into my brain that messing with glibc was about as good an idea as messing with a hungry puma; however, I've been unable to determine the source of this belief. So, if I go ahead with this: Am I doing something flagrantly stupid (e.g. I won't fix my problem, I will brick my server, or I will initiate a zombie apocalypse)? What can go wrong? What is likely to go wrong? How do I avoid the answers to 2 and 3?

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• BitNami LAMP stack on ubuntu

  - by Desmond Liang

  I just installed BitNami LAMP stack on ubuntu. When I visit localhost/127.0.0.1 Apache returns "403 Forbidden. You don't have permission to access / on this server." I try repointing Apache's home directory to another folder (same hard drive, same partition) that's set to 777 recursively. Still getting 403. And then I change the ownership of the directory to under my username and daemon group from root/root. Same error. Am I missing something here?

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• Sendmail - preventing aliased users from receiving multiple copies of the same email

  - by MikeQ

  Is there any way to prevent a user from receiving multiple copies of the same email if an email is sent to both an alias for the user as well as the user themselves? For example, suppose bob.smith is a included in the alias list for developers (@company.com) If I send the email to both the user and an alias for the user: To: [email protected], [email protected] ... is there any way to prevent user Bob from receiving the same email two times? EDIT: I've observed that if Bob is a member of two different alias groups, and I send an email just to those two groups (not the user directly), sendmail correctly expands the groups and removes the duplicate. The behavior I want to fix occurs when you send directly to the user AND a group they belong to.

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• CPanel - How to stop Apache from running as root user?

  - by ambu

  <?php echo `whoami`; ?> So this is returning 'root' and I don't know how to prevent it. I'm using WebHost Manager / CPanel which is supposed to create multiple users/vhosts and have Apache spawn it's process as that user/group. This isn't happening. If I login to WHM and open the PHP and SuExec Configuration section, my settings are: Default PHP Version (.php files) 5 PHP 5 Handler cgi PHP 4 Handler none Apache suEXEC on What's wrong? How can I get Apache to run as the correct user rather than root?

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• Mounting FTP as filesystem in debian using curlftpfs

  - by Karel Bílek

  I am trying to mount a FTP as filesystem in debian using curlftpfs. What I get after running curlftpfs -o allow_other username:[email protected] /mnt/myftp/ is just: fuse: failed to open /dev/fuse: Permission denied even when run as root. What am I doing wrong? (curlftpfs is in version curlftpfs 0.9.2 libcurl/7.21.0 fuse/2.8) edit: When I write ls -lah /dev/fuse, I see crw-rw---- 1 root fuse 10, 229 Apr 9 00:34 /dev/fuse ...but even when I add both myself and user root to group fuse, neither me (as a user) or user root can mount ftp, I still see fuse: failed to open /dev/fuse: Permission denied edit2: Even if I write this fairly insecure and crazy line: sudo chmod a+rwx /dev/fuse I still get the permission denied message. Which permissions could be denied? edit3: I forgot to mention I am on VPS with OpenVZ. I thought that there is no issue with this, but apparently, there is! I am adding the resolution as the answer.

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• Fixing mac user file permissions, not the system

  - by Cawas

  Usually those files get wrong permission when coming from the network, even when I copy them from it, but mostly through "file sharing". So, definitely not talking about Disk Utility repair here, please. But regardless of how the file got wrong permission, I know of two bad ways to fix them. One is CMD+I and the other is chown / chmod. The command line isn't all bad but isn't practical either. Some times it's just 1 file I need to repair, sometimes it's a bunch of them. By "repair" I mean 644 for files, 755 for folders, and current user:group for all of them. Isn't there any app / script / automator out there to do that?

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• SSH broken after homedir permissions and hostname change on EC2-hosted Ubuntu

  - by dimadima

  I changed my instance's hostname using the hostname utility and then set it in /etc/hostname so that the new name survives reboot. My main motivation was for differentiating between instances at the prompt using the \h format in PS1. EDIT I also changed permissions on my home directory. I made my home directory group writeable. Now I can no longer SSH into the machine. The short of it is the error Permission denied (publickey). Running ssh -v, the more verbose output is: debug1: Authentications that can continue: publickey debug1: Next authentication method: publickey debug1: Offering RSA public key: /Users/dmitry/.ssh/id_rsa debug1: Authentications that can continue: publickey debug1: Trying private key: /Users/dmitry/.ssh/ec2key.pem debug1: read PEM private key done: type RSA debug1: Authentications that can continue: publickey debug1: No more authentication methods to try. Permission denied (publickey). Should I have done something after changing the hostname? Now I can't get into the instance! :(

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• Disable Offline Files (mobsync.exe) on Windows 7 Home

  - by Synetech

  This morning I was watching the CPU graph of a Windows 7 Home laptop and noticed that every few seconds, the CPU would spike several percent. I watched the processes and determined that it was mobsync.exe (Offline Files) that was the culprit. I tried the usual steps that Googling turns up, and clicking the Manage Offline Files link to bring up the Offline Files dialog to click Disable Synch does not work because the dialog will not display. This makes sense since everything I have read indicates that Offline Files is not even included/supported in the Home version, so I am at a loss as to why it is running at all, let alone why it is sucking up CPU cycles. (My best guess is that it was started when they pressed Win+X to access the Mobility Center.) Of course I can just kill mobsync, but it could always just come back. How/why would mobsync be running on a Home version and how can it be disabled (of course the Group Policy editor is not available on a Home version).

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• DNS record question

  - by Just plain me

  So I have two Windows domains/seperate forests. One forest consist of what is left of the bought-out company's domain. They have 5 servers that still have important data and need to be worked with on a daily basis by a large group of employees. We have a forest level trust setup to ease file access. We manually create DNS A records for the 5 servers so their short names would resolve to the IP addresses. I need the FQDN to resolve though. Should I create CName records to achieve this? I hope this question makes sense, I am learning DNS on the fly... :)

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• Active Directory Support Folder Redirection AND Portable Home Directories?

  - by Robert F

  Does anyone here know if Active Directory will support the use of both Windows Folder Redirection and Mac OS X's Portable Home Directories for synchronizing a user's files to a remote share? I want to synchronize my user's files with a remote share as a way of backing up their data. This is fairly straightforward if a user has only a Windows computer or only a Mac computer. However, will Active Directory support a situation in which a user has both types of computers or they have a Mac on which they're running Windows within Parallels? If I configure a remote share via Group Policies for their Windows files and then configure a different share for their Mac files via ADUC, when they change a file on either computer, will AD know which computer the file was changed on and synchronize that file with the appropriate remote folder? Thanks!

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• Does Exchange 2010 lift the restriction that DL addresses must be in Active Directory?

  - by Justin Grant

  We'd like to enable end-users to be able to create and maintain their own email distribution lists in Exchange 2010, where those lists may include users inside the company but also customers, partners, etc. who are outside the company. One of the limitations in Exchange 2007 (see this question) was that any member of a DL had to have an entry in active directory. You couldn't just take a group of email addresses (both inside and outside my company) and create an Exchange DL with those addresses without involving Active Directory admins to create entries for each external user. For a company creating hundreds of small mailing lists every month, this was an unacceptable IT expense. So we had to use a separate mailing list solution (GNU mailman) for DLs which included external users. Is this limitation relaxed in Exchange 2010 so we can throw away GNU mailman and use Exchange instead?

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• Help me exorcise my demon possessed logon script

  - by Detritus Maximus

  I have a user logon script that copies a file over to a subfolder of the current user's profile path: Script (only showing the line that isn't working): copy /Y c:\records\javasettings_Windows_x86.xml "%USERPROFILE%\Application Data\OpenOffice.org\3\user\config">>c:\records\OOo3%USERNAME%.txt 2>&1 To diagnose why it wasn't working, I did a somelogfile.log parameter on the group policy script and found that what the above command is translating to is this: C:\WINDOWS>copy /Y c:\records\javasettings_Windows_x86.xml "C:\Documents and Settings\test2\Application Data\OpenOffice.org\3\user\config" 1>>c:\records\OOo3test2.txt 2>&1 So the question is, how do I get rid of (exorcise) the " 1" in that line? Update 1: So the reason the script wasn't working was that the creator didn't have any permissions on the directory. I fixed the permissions, and now the file works but! I still have the " 1" showing on all the logs and would like to know why.

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• How to convert poor quality bitmap image to vector?

  - by Macha

  I'm designing a website for a group which has lost the original digital image for their logo. The only file they have of it is a jpg which was embedded into a word document. The image has everything possible wrong with it: Anti-aliased onto a white background where it should be transparent Image artefacts Resized downwards poorly. Lines that should be straight and solid aren't. I've currently used the wand tool to get rid of the white background, and stuck it on the website, but it's poor quality makes it stick out like a sore thumb. I need a few different sizes of it to use, so how would I go about creating a vector image based on it?

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• Storing large amounts of small files into bigger files on Windows

  - by asmo

  Let's say I have 50 GiB of files that weights around 500 KiB each. My guess is that having, for example, 5 large files of 10 GiB each with the same content archived in them would be better for hard drive performance. Am I correct? Will there be a noticeable gain on an NTFS filesystem? ===================================================================== Finally, which tool could I use to group the files together while retaining the ability to modify the content of the archive with zero or minor performance loss? For example, I like TrueCrypt archiving because after mounting an archive file, it creates a drive which I can use seamlessly as if it was a normal drive. The only thing with TrueCrypt is that I don't need encryption/compression, only archiving.

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• I will need a formula showing counts, totals and sub-totals for data set from different sheet

  - by Sapthagiri

  I am using MS2003 EXCEL. I have a cell in Sheet 1 with a color value and totals, with sub-totals. On sheet 2, I have a data set with 3 columns (colors, dress, type). On Sheet 1, I will need a tabulation showing Totals for Colors, with totals at sub-group of dress (shirt,pants) split by type totals (Full, Half, Tee) Below table represents my Data set in Sheet 2 Colors Make Dress Type -------------------------------- Red Arrow shirt full Red Levi shirt half blue Rugger Pant full yellow Wrangler shirt tee yellow Rugger Pant half yellow Arrow shirt tee yellow Wrangler Pant half Green Rugger Pant full Red Levi shirt tee blue Rugger Pant full blue Arrow shirt full blue Wrangler Pant half Green Levi shirt full I will need a formula showing counts, totals and sub-totals on Sheet 1 for data set from Sheet 2. Refer my table below which represent my expected data on Sheet 1, total Shirt Full Half Tees Pants Full Shorts Red 10 8 4 3 1 2 1 1 Blue Green Yellow Please note I am not looking for a Pivot table solution.

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• httpd running as _www instead of www as it used to

  - by Ethon Bridges

  OSX Mountain Lion and Apache 2.2.22. I have always had the httpd.conf set as: User www Group www and it was running as such. Until today. Rebooted the server for another reason and when I tried to make some changes to a website via FTP this evening, it said access denied. Got to looking at the processes and httpd is now running as _www. WTH? Now of course all of my users are getting denied messages I assume because they were all created and permitted with the www user, not _www. Any idea why this happened or what I may have done to cause it?

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• Ubuntu Wireless card not found

  - by user32121

  Hello all, I'm trying to setup Ubuntu on an old PC. I ran the following command, lspci, in order to get info on the wireless card installed. 00:0a.0 Ethernet controller: Marvell Technology Group Ltd. 88w8335 [Libertas] 802.11b/g Wireless (rev 03) Does anyone know where I can get drivers for this card/chip? And also, how to install (I'm rather new to linux). Also, I'm sure the card is working because I just formatted over xp, and everything was working well. Thanks in advanced!

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• Disable the Taskbar in Windows 7

  - by ToastMan

  Hi all, I got Windows Server 2008 and Windows 7. We need to run an application on certain computers with very restricted access to other windows functions. Is there a way to disable the taskbar for client users on W7 computers? I looked in the Group Policies but it's not there. Also, I am aware of Taskbar Eliminator, but it doesn't remove the Start button which is not good for me. Any suggestions are very appreciated. Thank you. Toast

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• Monitoring System for the cloud?

  - by Maxim Veksler

  I need a monitoring system, much like ganglia / nagios that is build for the cloud. I need it to support : Adding / removing nodes dynamically. (Node shuts down, dose not imply node failure...) Dynamic node based categorization, meaning node can identify them self as being part of group X (ganglia gets this almost right, but lacks the dynamic part...) Does not require multicast support (generally not allowed in cloud based setups) Plugins for recent cool stuff such as Hadoop, Cassandra, Mongo would be cool. More features include: External API, web interface and co. I've looked at Ganglia, munin and they both seem be almost there (but not exactly). I would also go for reasonably priced Software as Service solution. I'm currently doing research, so Suggestions are highly appreciated. Thank you, Maxim

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• Python: Check existence of shell command before execution

  - by Gabriel L. Oliveira

  Hi all. I'm trying to find a way to check the existence of a shell command before its execution. For example, I'll execute the command ack-grep. So, I'm trying to do: import subprocess from subprocess import PIPE cmd_grep = subprocess.Popen(["ack-grep", "--no-color", "--max-count=1", "--no-group", "def run_main", "../cgedit/"], stdout=PIPE, stderr=PIPE) Than, if I execute cmd_grep.stderr.read() I receive '' like the output. But I don't have the command ack-grep on my path. So, why Popen is not putting the error message on my .stderr variable? Also, is there a easyer way to do what I'm trying to do?

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• syntax error: unknown user 'munin' in statoverride file

  - by John

  Server running Ubuntu 12.04 lts I installed munin the other day on a server. I decided later to remove it with apt-get. I noticed that not everything was removed from the installation so manually removed the munin web directory and also removed the munin user-name and group from the sever. However I have just now tried to run apt-get upgrade which is now returning an error: dpkg: unrecoverable fatal error, aborting: syntax error: unknown user 'munin' in statoverride file E: Sub-process /usr/bin/dpkg returned an error code (2) I am now out of my depth. What does this mean? Google results have not really been helpful. Can anyone help? Thanks, John

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• Router's ssid changes from infrastructure to ad-hoc

  - by waldo

  For a period of time the router's ssid is shown (on various computers) as a normal infrastructure network - computers connect fine and everything works however after a few minutes / hours all computers see the same ssid as an ad-hoc network (not infrastructure). At this point a computer that was already connected continues to work - a computer that isn't cannot connect. Rebooting the router temporarily restores the visibility of the correct infrastructure ssid. Is something interfering? Connecting computers: macbook (2009), iphone 3g, windows vista desktop, windows xp desktop. Details: - D-Link DSL-2740B router set to WPA2-PSK (Personal) - Enable Wireless : Yes - Wireless Network Name (SSID) : ###### - Country : Australia - Wireless Channel : 1 - 802.11 Mode : Mixed 802.11n, 802.11g and 802.11b - Channel Width : Auto 20/40 MHz - Transmission Rate : Best (automatic) - Hide Wireless Network : No - Group Key Update Interval : 0 (seconds)

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