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• Is it possible to rate-limit an scp/sftp/rsync/etc transfer from the command-line? ie, manual QoS on

  - by warren

  Specifically, I am looking to rate-limit an scp or sftp session (or other arbitrary network call) in the call itself. For example, let's say I want to copy 100MB to one server, and 1GB to another. I'd like to be able to run both of these at the same time, but maintain a QoS for "normal" computer usage - somewhat similar to how you can rate-limit bittorrent. Is there a way to do this without touching the networking hardware? I'm envisioning something akin to: magic-qos-tool 'scp file user@host:/path/to/file' Or.. scp -rate 40kbps file user@host:/path/to/file

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• How can I style the command being entered in a bash prompt?

  - by C4H5As

  While watching this intro video to Brunch, at about t=1:30 the command prompt being used has some very cool styles. The part I'm interested in is how the presenter managed to colour the text being entered on the prompt, while it's being entered. It looks like the first argument is coloured green when it becomes a valid executable command & purple when it's invalid. Successive arguments appear white, though it looks like a valid file path gets an underline (see ~ t=2:01). What's the trick here? Is this a custom terminal emulator? Is it some kind of magic $PS1?

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• How to quickly empty a very full recycle bin?

  - by Pekka

  I have deleted about half a million files from a folder, and didn't think to press Shift in order to delete them completely straight away. Now they're clogging my recycle bin, and Windows claims it will take 4 hours to empty it - it claims to do about 68 files per second. Is there some magic or an alternative method that can speed this up? Bounty - I'm starting a bounty. The files are still in my bin, as there was no pressing need to get rid of them and this way, I can try out the suggestions presented. I am, however, looking for a way that does not include hard-deleting the contents of the RECYCLER folder - I'm sure that would work, but it feels a bit unclean to me.

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• suddenly cannot mount nfs share from Windows 7

  - by bing

  I recently reinstalled my file server (moved from fedora to Ubuntu server). Now I cannot mount my nfs share from Windows 7, mounting from Mac OSX works fine. In Windows I either keep getting "the semaphore timeout period has expired" or "an unexpected error has occured". Does Ubuntu need some special magic to allow Windows 7 to mount an nfs share? This is my exports file /home/Bing/ 192.168.1.*(rw,async,insecure,no_subtree_check) /home/Bing/mnt/EXTRN2 192.168.1.*(rw,async,insecure,no_subtree_check) /home/Bing/mnt/EXTRN3 192.168.1.*(rw,async,insecure,no_subtree_check)

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• Can i enlarge os c drive of my windows 8?

  - by Sorgatz

  Last year I got a new Western Digital WD Blue 500GB HDD to replace my old drive. The first thing I did was to install latest Windows 8. While installing Windows 8 I created 3 partitions, C drive for the OS and others for storage. The OS partition is 120GB (which at the time I thought would be plenty big) but I'm now realizing its too small! I wonder if it's possible to re-size HDD partition without reformatting and re-install my Windows 8. So that is my question, Can i enlarge os c drive of my windows 8 without having to re-format? I've used the Norton Partition Magic and Disk Management to make this happen but there doesn't seem to be any options to make it happen. Thanks for any help you guys can give regarding my question. I've worked hard to optimize my current install of Windows 8 and would hate to start all over again.

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• Multiple domains, one config, hosted on apache2

  - by Kristoffer Sall Hansen

  First a quick disclaimer, I'm not a 'server guy' or a 'unix pro' or anything like that, I'm a web programmer who got stuck doing server works since I ran linux (ubuntu) on my netbook. I'm trying to set up an apache server running on Debian to automagically serve multiple domains, each domain needs to have its own directory in /var/www. Since this is the last thing I do for this company I really need it to be easy for my successor (who is even more a beginner at servers than I am), to create more domains without having to muck around with ssh or /etc/apache2/sites-available, so what I'm looking for is basically any magic mumbo-jumbo in default (or apt-get, or conf.d) that makes the server start serving any domain that has a matching folder in /var/www they will ofcourse have to initiate domain transfers the usual way. I have no problem setting up domains individually. Ick... hope the above makes sense to someone.

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• SQL Import to update existing records?

  - by Kenundrum

  I've got a table in a database that contains costs for items that gets updated monthly. To update these costs, we have someone export the table, do some magic in excel, and then import the table back to the database. We're running MSSQL 2005 and using the built in SQL Management Studio. The problem is that when importing back into the table, we have to delete all the records before we import or else we'll get errors. The ideal situation would be for the import to recognize the primary keys and then update the records instead of trying to create a second record with a duplicate key- halting the import. The best illustration of the behavior we're trying to get can be found at http://sqlmanager.net/en/products/mssql/dataimport/documentation/hs2180.html the update or insert example. Is something like this possible with the built in tools or do we have to get third party software to make it happen?

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• How to update grub with puppet?

  - by Tombart

  I would like to change a line in /etc/default/grub with puppet to this: GRUB_CMDLINE_LINUX="cgroup_enable=memory" I've tried to used augeas which seems to do this magic: exec { "update_grub": command => "update-grub", refreshonly => true, } augeas { "grub-serial": context => "/files/etc/default/grub", changes => [ "set /files/etc/default/grub/GRUB_CMDLINE_LINUX[last()] cgroup_enable=memory", ], notify => Exec['update_grub'], } It seems to work, but the result string is not in quotes and also I want to make sure that any other values will be separated by space. GRUB_CMDLINE_LINUX=cgroup_enable=memory Is there some mechanism how to append values and escape the whole thing? GRUB_CMDLINE_LINUX="quiet splash cgroup_enable=memory"

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• Two identical fiber optic broadband lines working as one

  - by Katafalkas

  I have been trying to find an answer to this, but all I can find is hobbyists trying to connect their Linksys devices to get some magic out of them. I am looking for a way I could combine two 100Mbit fiber optic lines into a single connection for our office. I assume it involves some Cisco learning or something similar. Do I need to configure some big router to load-balance the NATing in some way? I assume that many of you have done something similar and hope someone could share their knowledge or at least provide me some tips on how to do this.

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• OS X 10.6 Snow Leopard no longer mounting an external USB drive

  - by Brant Bobby

  I have a 1TB generic external hard drive containing a single HFS partition. I originally formatted this using Disk Utility and it worked fine. Now, for some reason, it's not auto-mounting when I start up. Using mount at the command line gives the following error: $ sudo mount /dev/disk1s2 /Volumes/Test /dev/disk1s2 on /Volumes/Test: Incorrect super block. ... but if I use the mount_hfs command it works fine, mounts, and is readable. $ mount_hfs /dev/disk1s2 /Volumes/Test/ fsck gives me an error about a bad super block: $ fsck /dev/disk1 ** /dev/rdisk1 (NO WRITE) BAD SUPER BLOCK: MAGIC NUMBER WRONG ... but fsck_hfs -fn /dev/disk1s2 doesn't find any problems and reports that the volume appears to be OK. In Disk Utility, the drive appears to have a single MS-DOS partition with a curious notice about how it appears to be partitioned for Boot Camp: I have the Boot Camp HFS driver installed in WIndows 7, and that OS sees the drive/partition normally. What's wrong with my disk?

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• WOL not working

  - by Maciej Swic

  I have a Marvell Yukon integrated NIC and i have installed the WOL package on my freeBSD-based NAS. I'm trying to wake my PC using the command "wol M:A:C:A:D:D:R". Command line spits back that it is "waking" however nothing happens. I found no reference to WOL whatsoever in BIOS and i enabled Magic Packet WOL in windows on that interface. Also double-checked MAC addr and that i entered it in the correct format in "wol". I'm on Windows 7. What next? =/

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• Forward domain for flavors.me yet retain own_domain.com/blog

  - by romant

  I wish to have my flavors.me use my own domain, yet still wish to retain access to own_domain.com/blog The way flavors.me works now is that I must have the DNS A record point at their IP. Which obviously will prevent me from still having access to own_domain.com/blog Am posting this to gather some ideas. What ought to be the best way of solving this? I am trying to stave off the need for a subdomain for the blog if I can help it. Is there some magic with htaccess and domain masking that can occur without SEO penalties? Thank you.

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• Forward domain for flavors.me yet retain own_domain.com/blog

  - by romant

  I wish to have my flavors.me use my own domain, yet still wish to retain access to own_domain.com/blog The way flavors.me works now is that I must have the DNS A record point at their IP. Which obviously will prevent me from still having access to own_domain.com/blog Am posting this to gather some ideas. What ought to be the best way of solving this? I am trying to stave off the need for a subdomain for the blog if I can help it. Is there some magic with htaccess and domain masking that can occur without SEO penalties? Thank you.

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• Fix a tomcat6 error message "/bin/bash already running" when starting tomcat?

  - by Andrew Austin

  I have a Ubuntu 10.04 machine that has tomcat6 on it. When I start tomcat6 with /etc/init.d/tomcat6 start I get * Starting Tomcat servlet engine tomcat6 /bin/bash already running. and the server fails to start. Unfortunately, there is nothing in /var/log/tomcat/catalina.out to help debug the issue. With some cleverly placed echo statements it seems to be the line from /etc/init.d/tomcat6: start-stop-daemon --start -u "$TOMCAT6_USER" -g "$TOMCAT6_GROUP" \ -c "$TOMCAT6_USER" -d "$CATALINA_TMPDIR" \ -x /bin/bash -- -c "$AUTHBIND_COMMAND $TOMCAT_SH" The only thing I've changed in this script is TOMCAT6_USER=root. In servers.xml, the only thing I've changed is <Connector port="80" protocol="HTTP/1.1" from port 8080. I have tried reinstalling the package by first removing everything sudo apt-get --purge remove tomacat6 and then sudo apt-get install tomcat6 but this has not solved the issue. I have also restarted the server multiple times in hopes of some magic. Everything was working until I restarted my server. Any ideas?

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• How to create custom Live CD with upgraded linux-image kernel?

  - by ???

  I'm following this tutorial to customize a Live CD, http://www.debuntu.org/how-to-customize-your-ubuntu-live-cd However, it's failed to upgrade linux-image, I guess it's just can't update-grub. Any idea? EDIT I copied the custom/ directory into an ext4 image, now the linux-image-2.6.35-24 package is successfully upgrade. But as shown in the original CDROM, the vmlinuz-* and initrd.img-* file is moved out to /casper/vmlinuz and casper/initrd.lz. Well, I can move vmlinuz-2.6.34-24-generic to /casper/vmlinuz, but how to compress file initrd.img-2.6.35-24-generic in .lz format? (It looks like lzip, but it's not: ) # cd original-maverick/casper # lzip -d initrd.lz initrd.lz: bad magic number (file not in lzip format).

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• Installing Exchange 2010 Error with Ipv6 disabled/enabled

  - by MadBoy

  I've tried installing Exchange 2010 on Windows 2k8 R2. Following error occurred when installing Hub Transport Role. Hub Transport Role Failed Error: The following error was generated when "$error.Clear(); install-ExsetdataAtom -AtomName SharedMachineSettings -DomainController $RoleDomainController" was run: "An error occurred with error code '2147950640' and message 'There is no such object on the server.'.". An error occurred with error code '2147950640' and message 'There is no such object on the server.' I have tried installation with both IPV6 turned on and off. Both failed and both required me to do some magic to uninstall Exchange, and try installation again. Feel free to shoot your ideas what can be done to resolve the error. In the end I will install HyperV and put Exchange 2010 on different server but that's not what the server owner wanted.

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• Can i enlarge os c drive of my windows 8? [migrated]

  - by Sorgatz

  Last year I got a new Western Digital WD Blue 500GB HDD to replace my old drive. The first thing I did was to install latest Windows 8. While installing Windows 8 I created 3 partitions, C drive for the OS and others for storage. The OS partition is 120GB (which at the time I thought would be plenty big) but I'm now realizing its too small! I wonder if it's possible to re-size HDD partition without reformatting and re-install my Windows 8. So that is my question, Can i enlarge os c drive of my windows 8 without having to re-format? I've used the Norton Partition Magic and Disk Management to make this happen but there doesn't seem to be any options to make it happen. Thanks for any help you guys can give regarding my question. I've worked hard to optimize my current install of Windows 8 and would hate to start all over again.

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• How to install imagemagick on windows 7

  - by learner

  How to install image magic at windows 7. I followed these instruction To install IMagick on windows xp (php 5.2.x) 1.) download and install ImageMagick-6.5.8-7 Q16-windows-dll.exe imagemagick.org/download/binaries/ ImageMagick-6.5.8-7-Q16-windows-dll.exe 2.) download php_imagick_dyn-Q16.dll from: valokuva.org/outside-blog-content/ imagick-windows-builds/080709/ copy dll to [PHP]/extension dir and rename it to php_imagick.dll 3.) You have to edit your php.ini file and add new extension "extension=php_imagick.dll" 4.) Save ini file and restart apache server. (If necessary, restart your windows) 5.) phpinfo() should show imagick enabled. after that I execute a sample script but its not working. it shows the Imagic class missing error. Please help me to install Imagick. :-(

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• Fix a tomcat6 error message "/bin/bash already running" when starting tomcat?

  - by Andrew Austin

  I have a Ubuntu 10.04 machine that has tomcat6 on it. When I start tomcat6 with /etc/init.d/tomcat6 start I get * Starting Tomcat servlet engine tomcat6 /bin/bash already running. and the server fails to start. Unfortunately, there is nothing in /var/log/tomcat/catalina.out to help debug the issue. With some cleverly placed echo statements it seems to be the line from /etc/init.d/tomcat6: start-stop-daemon --start -u "$TOMCAT6_USER" -g "$TOMCAT6_GROUP" \ -c "$TOMCAT6_USER" -d "$CATALINA_TMPDIR" \ -x /bin/bash -- -c "$AUTHBIND_COMMAND $TOMCAT_SH" The only thing I've changed in this script is TOMCAT6_USER=root. In servers.xml, the only thing I've changed is <Connector port="80" protocol="HTTP/1.1" from port 8080. I have tried reinstalling the package by first removing everything sudo apt-get --purge remove tomacat6 and then sudo apt-get install tomcat6 but this has not solved the issue. I have also restarted the server multiple times in hopes of some magic. Everything was working until I restarted my server. Any ideas?

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• One-way forest trust between geographically distributed forests using Server 2008 R2

  - by bwerks

  Hi all, I'm planning out a joinder between two domains, as would take place with contracting companies. Forests A and B exist in distant sites, and there is to be a one-way forest trust so that domain users in Forest A can be authenticated on machines in Forest B. In order to facilitate this, each forest's domain controller must be able to contact each other in order to set up & confirm the trust, but my question is what underlying networking magic must take place beneath it. So far the prevailing approach has been to maintain a VPN connection between the two sites, but the technet documentation seems to indicate that DNS forwarding may be the way to go. Is this the case? Furthermore, if DNS will suffice, does that mean that there must be a server running DNS on boundary servers in each domain so that they can be reached from across the internet? How must they be configured? Thanks!

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• Resize primary partition

  - by telebog

  I have a hdd with the folowing partition table 12Gb Primary Partition (ntfs) 140Gb Extended Partition (ntfs) I want to install windows 7 and I need more space for the Primary Partition. The problem is that when I resize partitons I obtain: 12Gb Primary Partition (ntfs) 110Gb Extended Partition (ntfs) 30Gb Free Space So I can't allocate the free space to primary partition because the free space is at the end of the disk. Is there a solution to extend the primary partition as: 42Gb Primary Partition (ntfs) 110Gb Extended Partition (ntfs) without repartitioning the entire disk? I used partition magic, gparted-live-0.4.6-4 and others with no success. With the Disk Management from Vista I manage to extend primary partition, but made my partitions dinamic.

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• What are the best options for a root filesystem hosted on SSD under Linux

  - by stsquad

  I'm working on an embedded system which is going to be booting and hosting it's rootfs on an SSD disk. We are currently looking at using Intel X-18M SSDs. The file system structure will have a fairly static /usr section (modulo software upgrades) and an active /var and /var/log for maintaining state and logging. Given the wear-levelling done by the underlying flash does having separate partitions help or hinder? As modern SSDs appear as straight block devices and hide their mapping magic behind their firmware is there any point trying to optimise the choice of file-system that sits on-top of the SSD? Finally does enable SMART monitoring make any sense in this context or are their SSD specific ways of determining the underlying health of the storage hardware?

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• Random flickering on 2.6.32 kernels after suspend

  - by whitequark

  I have XUbuntu 9.10 installed on a Toshiba NB200 netbook with Intel video card that's handled with i915 driver. With 2.6.31 stable, recommended kernel everything but WiFi works fine: Atheros ath9k WiFi shows too small signal power and loses packets in 'bursts' sometimes. With 2.6.32-* (I tested -9 to -11 from Ubuntu's kernel unstable ppa) everything works fine just prior to first suspend: echo mem >/sys/power/state. After it random unidentified fullscreen 'one-frame' flickering begins in Xorg, and after a couple of minutes everything eventually hangs while showing filled grey (not white; it is like default button colour) screen; no X keys are working: Ctrl+Alt+Fn don't, blind typing in console too. Magic SysRq still works and I was able to reboot. Also there is one out-of-tree kernel module called omnibook that is required to turn on WiFi and Bluetooth. Any advices?

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• Can 'screen' grab an existing process and tie itself to it?

  - by warren

  Scenario: Started a process that's going to take "a while" to complete outside of screen. Need to leave the terminal / netowrk hiccups Process lost Would be nice if: Started a process outside of screen Realize error Run screen <magic-goes-here> and it grabs the active process to itself From the man pages and --help info, I don't see a way this can be done. Is this possible directly with screen? If not, is it possible to change the owning shell of a process, so that the bash (or other shell of your choosing) instance inside screen can have a command run which will change the parent shell of the initial process to itself from the originator?

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• How to enabled pdo mysql in Centos 5.8

  - by nacho3d

  I have a VPS with Centos 5.8 In phpinfo displays: './configure' '--disable-fileinfo' '--disable-pdo' '--enable-bcmath' '--enable-calendar' '--enable-ftp' '--enable-libxml' '--enable-magic-quotes' '--enable-sockets' '--prefix=/usr/local' '--with-apxs2=/usr/local/apache/bin/apxs' '--with-curl=/opt/curlssl/' '--with-imap=/opt/php_with_imap_client/' '--with-imap-ssl=/usr' '--with-kerberos' '--with-libdir=lib64' '--with-libxml-dir=/opt/xml2/' '--with-mysql=/usr' '--with-mysql-sock=/var/lib/mysql/mysql.sock' '--with-openssl=/usr' '--with-openssl-dir=/usr' '--with-pcre-regex=/opt/pcre' '--with-pic' '--with-zlib' '--with-zlib-dir=/usr' I've tried this: http://www.host1free.com/forum/vps-technical-support/7248-tutoria-centos-apache-webserver-mysql-php-eaccelerator-apc.html And aparently it installed php-pdo # rpm -qa |grep php php-5.3.13-1.el5.remi php-xml-5.3.13-1.el5.remi php-common-5.3.13-1.el5.remi php-cli-5.3.13-1.el5.remi php-pdo-5.3.13-1.el5.remi php-xmlrpc-5.3.13-1.el5.remi php-mcrypt-5.3.13-1.el5.remi But I've restarted apache and it still says in my phpinfo: '--disable-pdo' Should I rebuild php? Do I need to do some other step?

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