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  • can I consolidate a multi-disk zfs zpool to a single (larger) disk?

    - by rmeden
    I have this zpool: bash-3.2# zpool status dpool pool: dpool state: ONLINE scan: none requested config: NAME STATE READ WRITE CKSUM dpool ONLINE 0 0 0 c3t600601604F021A009E1F867A3E24E211d0 ONLINE 0 0 0 c3t600601604F021A00141D843A3F24E211d0 ONLINE 0 0 0 I would like to replace both of these disks with a single (larger disk). Can it be done? zpool attach allows me to replace one physical disk, but it won't allow me to replace both at once.

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  • Do Windows Vista/7 have memory protection?

    - by winnewb
    Is it possible for a program to access another program's memory directly and read from (or write to) it, or to "inherit" the old contents of memory reclaimed from another program? (ie if it doesn't zero out memory before using it and just reads from unitialized memory directly)

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  • Apache ignore my .htaccess 'dontlog' option

    - by Emilio
    I wrote .htaccess in file dir/subdir to don't log URI requests in this particular directory. The .htaccess is actually executed by apache (if i write deny from , it works), but if the file contains only this rule: SetEnvIf Request_URI "^dir/subdir" dontlog Don't work. AllowOverride All and mod_rewrite are enabled. What can be the problem? Sorry for my bad english.

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  • C++ program to make linux Ubuntu clone windows partition?

    - by saad
    I want to write code in Dev C++ so that when i execute in Ubuntu 8 , it clones my windows 7 from D: partition to its child partitions E:,F: ... i have made my partitions of equal sizes and i have tested by manualy using ntfsclone ,so their will be no problem in cloning. this is part of kiosk system and i hope you understand what i am upto Some reference or help will be appreciated thanks

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  • What is the state of ext3 support in Mac OS X 10.6? [closed]

    - by gzuki
    Possible Duplicate: Mount ext2/ext3 in Mac OS X Snow Leopard I have a 1tb hard drive, I want it to have one partition that can serve as an interchange between linux (ubuntu) and mac (snow leopard). HFS+ scares me a bit, and I can't seem to get a clear picture on whether or not something like fuse can reliably write ext3 partitions in mac. Any good advice on this topic? Should I just pick HFS+ or ext3 and hope for the best (or just deal with only getting read-only on one OS)?

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  • LDAP (slapd) ACL issue - can add but not modify entries

    - by Jonas
    I have an issue with the ACL configuration of an LDAP server (slapd). The following ACL entry is active as the first rule that applies: {0}to dn.subtree="ou=some,ou=where,ou=beneath,dc=the,dc=rain,dc=bow" attrs=entry,children by users write Now the strange thing that happens is that given that rule I can add an entry to the respective DN but if I want to modify it with the very same user, then I get 0x32 (LDAP_INSUFFICIENT_ACCESS) Can someone give me a hint what the problem could be?

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  • Laptop will boot to some usb flash drives but not others.

    - by evolvd
    Laptop: HP Compaq 6710b I can boot from usb just fine with the following usb flash drives: Cruzer micro 4GB HP 4GB The flash drive that will not boot: Flash Voyager 8GB To knock out variables I did the following: Using Hard Disk Low Level Format Tool I performed a low level format Full erase with Flash Memory Tookit In windows 7 I formated the drive to fat32 Used USB-Boot-Tester to write to the drive Also used uNetbooting with various distros to see if that would make a difference My guesses on what could be preventing the drive from booting: The laptop does not support booting to usb flash drives larger than 4GB The drive is defective in some way

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  • Rails /tmp/cache/assets permissions issue using Debian virtual machine hosted on OS X Lion

    - by Jim
    I am running Parallels Desktop 7 on OS X Lion. I have a VM with Debian installed, and inside that VM I setup a Rails development environment. I am using Parallels Tools to share out my OS X home directory to the VM - the goal here is to run the Rails server on the VM, but host the files on OS X (so they are automatically backed up, and so I can use tools like Textmate to develop with). Everything seems to work with the shared directory - my Debian user can read, write, and execute files. However, when I cloned a recent Rails project from Git, I got an error message when it tried to compile the CSS assets. My symptoms are exactly the same as in the question: http://stackoverflow.com/questions/7556774/rails-sprocket-error-compiling-css-assest-chown-issue I believe this is permissions-based, but it is really weird. My entire Rails project directory has permissions set to 777 and my Debian user owns it. If I navigate into /tmp/cache/assets, those permissions are the same. However, the three-character directories Rails is creating (DCE, DA1, D05, etc...) are being created without write permissions! If I refresh the Rails page a few times, about 4 or 5 (with Rails creating new three-character directories every time), eventually it will create one of the directories with the proper 777 permissions and everything will work! This will persist until I make a change to the CSS files and it has to recompile. Does anyone have any idea what might be going on here? I can't fathom why it is creating temp directories with incorrect permissions, or why after a few refreshes the good permissions kick in and it works... It definitely seems to be an issue with the share, since if I move the project into a different directory on the VM, it seems to work fine. On the OS X side, I've given the shared folder 777 permissions as well, but no dice...any ideas? Update I've found that the number of times I need to refresh before it works is not random - it has to do with how many assets are being compiled. For example, if I edit one of my CSS files, and there are four CSS files in the app/assets/stylesheets directory, I have to refresh four times before the app will finally work without the operation not permitted error...

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  • USB sticks optimized for OS booting and virus removal [closed]

    - by Rupert
    I'm looking to buy some usb sticks which will mainly be used in tech support for the purposes of removing viruses and booting up various OS's. Therefore, I am looking for the following features: Write protected switch (so that they may be safely plugged in to potentially infected machines) As fast as possible (so that loading, for example, a windows recovery, doesn't take forever) At least 4GB in size Any other features that might be useful for the above purpose Price is no object but, of course, the cheaper the better.

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  • How do I create a bridged virtual network for libvirt+KVM+ubuntu-server the easy way?

    - by Arthur Ulfeldt
    I see lots of documentation on how to manually set up a network bridge and then manually add vm's tun devices to these bridges and then write a shell script that glues it all together. lots of work, very manual, and not impressive. On the other hand if you want to use NAT to KVM+libvirt VMs to the network you just click the new network button in the virt-manager gui and relax. Am I missing "the easy way" of causing a VM to share the physical network with the host?

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  • Matching ID3 Tags to Existing Files

    - by SLaks
    I have a collection of ripped CDs that were transcoded to a very low bitrate. (and I lost the original MP3s) I'd like to re-rip the CDs to a higher bitrate, and apply the ID3 tags from the existing rips to the new files. (These are custom tags; they will not be found in online databases) Is there any way to automatically copy ID3 tags by length and track number, or do I need to write one myself?

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  • How to allow unprivileged apache/PHP to do a root task (CentOS)

    - by Chris
    I am setting up a sort of personal dropbox for our customers on a CentOS 6.3 machine. The server will be accessible thru SFTP and a proprietary http service base on PHP. This machine will be in our DMZ so it has to be secure. Because of this I have apache running as an unprivileged user, hardened the security on apache, the OS, PHP, applied a lot of filtering in iptables and applied some restrictive TCP Wrappers. Now you might have suspected this one was coming, SELinux is also set to enforcing. I'm setting up PAM to use MySQL so my users in the web application can login. These users will all be in a group that can use SSH only for SFTP and users will be chrooted to their own 'home' folder. To allow this SELinux wants the folders to have the user_home_t tag. Also the parent directory needs to be writable by root only. If these restrictions are not met SELinux will kill the SSH pipe immediately. The files that need to be accessible thru both http and SFTP so I have made a SELinux module to allow Apache to search/attr/read/write etc. to directories with the user_home_dir_t tag. As sftp users are stored in MySQL I want to setup their home dirs upon user creation. This is a problem since Apache has no write access to the /home dir, it's only writable by root since it's required to keep SELinux and OpenSSH happy. Basically I need to let Apache do only a few tasks as root and only within /home. So I need to somehow elevate the privileges temporarily or let root do these tasks for apache instead. What I need to have apache do with root privileges is the following. mkdir /home/userdir/ mkdir /home/userdir/userdir chmod -R 0755 /home/userdir umask 011 /home/userdir/userdir chcon -R -t user_home_t /home/userdir chown -R user:sftp_admin /home/userdir/userdir chmod 2770 /home/userdir/userdir This would create a home for the user, now I have an idea that might work, cron. That would mean the server needs to check for users that have no home every minute, then when creating users the interface would freeze for an average of 30 seconds before the account creation can be confirmed which I do not prefer. Does anybody know if something can be done with sudoers? Or any other idea's are welcome... Thanks for your time!

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  • How can I make my other computer run a program?

    - by TimothyAWiseman
    If I have two computers, both running Windows 7, on my home network, is there some way to write a script so that I can click on a single icon on the one computer and make the other computer execute a program? Clearly, I could do this by accessing the other computer through remote desktop connection and then executing the program, but I would like to avoid (or at least automate) making the connection so I can just click a single icon to have it happen.

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  • How cpu writes data to dynamic RAM

    - by Krit
    Hello, I would like to know what kind of electrical signals does a cpu send to a dynamic RAM when it wants to write one bit (a 1 or 0). Is it simply that cpu sends just a single electric pulse, and if that electric pulse's voltage is higher than a certain level, it charges the capacitor to a voltage level that is "1" and if it is at a lower voltage band, it charges capacitor to level that it is "0"?

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  • Apache2 and logrotate: delaycompress needed?

    - by j0nes
    Hello, I am currently looking at the file size of my Apache logs as they became huge. In my logrotate conf, I have delaycompress enabled. Does Apache really need this (as the logrotate documentation says that some programs still write in the old file) or is it safe to disable delaycompress? Best regards, Jonas

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  • Virtualbox for Mac OS X - using an external USB drive, which filesystem is ideal?

    - by bencnscp
    Assuming that I am NOT going to add NTFS drivers that allow read+write of NTFS partitions, I was wondering if the choice of filesystem when I partition an external USB drive matters. The choices appear to be HFS+ vs. FAT32. For the time being, I simply created two half-sized paritions, one of each type. :) I plan to run various versions of Windows, and keep the VirtualBox files on the external drive.

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  • How to secure postfix to find out whether the emails are coming really from the sender?

    - by codeworxx
    Is it possible to secure postfix in a way, that incoming emails are checked on whether the email comes really from the sender? Is that possible to write php script and chose a sender, like the mail is really coming from the sender and what are the possibilities for postfix to find out that this mail is not actually coming from the real sender? What I have found out and activated are the options smtpd_sender_restrictions = reject_unknown_sender_domain unknown_address_reject_code = 554 smtpd_client_restrictions = reject_unknown_client unknown_client_reject_code = 554 Please mention, whether I have missed out on any points!

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  • Nginx - basic http authentication on PHP-script

    - by half_bit
    I added a PHP-Script that serves as "cgi-bin", Configuration: location ~^/cgi-bin/.*\.(cgi|pl|py|rb) { gzip off; fastcgi_pass 127.0.0.1:9000; fastcgi_index cgi-bin.php; fastcgi_param SCRIPT_FILENAME /etc/nginx/cgi-bin.php; fastcgi_param SCRIPT_NAME /cgi-bin/cgi-bin.php; fastcgi_param X_SCRIPT_FILENAME /usr/lib/$fastcgi_script_name; fastcgi_param X_SCRIPT_NAME $fastcgi_script_name; fastcgi_param QUERY_STRING $query_string; fastcgi_param REQUEST_METHOD $request_method; fastcgi_param CONTENT_TYPE $content_type; fastcgi_param CONTENT_LENGTH $content_length; fastcgi_param GATEWAY_INTERFACE CGI/1.1; fastcgi_param SERVER_SOFTWARE nginx; fastcgi_param REQUEST_URI $request_uri; fastcgi_param DOCUMENT_URI $document_uri; fastcgi_param DOCUMENT_ROOT $document_root; fastcgi_param SERVER_PROTOCOL $server_protocol; fastcgi_param REMOTE_ADDR $remote_addr; fastcgi_param REMOTE_PORT $remote_port; fastcgi_param SERVER_ADDR $server_addr; fastcgi_param SERVER_PORT $server_port; fastcgi_param SERVER_NAME $server_name; fastcgi_param REMOTE_USER $remote_user; } PHP-Script: <?php $descriptorspec = array( 0 => array("pipe", "r"), // stdin is a pipe that the child will read from 1 => array("pipe", "w"), // stdout is a pipe that the child will write to 2 => array("pipe", "w") // stderr is a file to write to ); $newenv = $_SERVER; $newenv["SCRIPT_FILENAME"] = $_SERVER["X_SCRIPT_FILENAME"]; $newenv["SCRIPT_NAME"] = $_SERVER["X_SCRIPT_NAME"]; if (is_executable($_SERVER["X_SCRIPT_FILENAME"])) { $process = proc_open($_SERVER["X_SCRIPT_FILENAME"], $descriptorspec, $pipes, NULL, $newenv); if (is_resource($process)) { fclose($pipes[0]); $head = fgets($pipes[1]); while (strcmp($head, "\n")) { header($head); $head = fgets($pipes[1]); } fpassthru($pipes[1]); fclose($pipes[1]); fclose($pipes[2]); $return_value = proc_close($process); } else { header("Status: 500 Internal Server Error"); echo("Internal Server Error"); } } else { header("Status: 404 Page Not Found"); echo("Page Not Found"); } ?> The problem with it thought is that I cannot add basic authentication. As soon as I enable it for location ~/cgi-bin it gives me a 404 error when I try to look it up. How can I solve this? I thought about restricting access to only my second server where I then add basic authentication over a proxy, but there must be a simpler solution. Sorry for the bad title, I couldn't think of a better one.

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  • Security: Managing network shares remotely on Ubuntu?

    - by Industrial
    Hi everyone, I am about to setup a home network server running Ubuntu Server and I'm currently a bit worried about how to handle network shares and permissions in a good way. After working a bit lately with Netgears ReadyNAS's units, I have become really spoiled with how easy it was to set up network shares and giving a specific user different levels of network access to a specific share (forbidden access, read, read/write). How would I accomplish the same with my Ubuntu server through SSH? Thanks a lot

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