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• OpenSSH SFTP server with chroot() + user with chroot exception

  - by HannesFostie

  I am currently setting up an SFTP server but there is one detail I can't seem to figure out. When I add a user, I would like him to connect using his client and be able to write in his "root dir" right away. My Match case for the SFTP-users group currently has ChrootDirectory set as "/home/%u", and inside that directory I have to have a subdirectory owned by the user, while /home/%u itself is owned by root. Next to that, the "root dir" also has a couple files, .bashrc to name one. Is it possible to put these files somewhere else, remove them, or at least make them invisible to the user? Thanks EDIT: One more little thing I'd like to implement is for one account to have read (or rw, not sure yet) access to all other users' home directories. What is the easiest way to implement this? EDIT 2: Basically, having one user be an exception to the chroot rule would get me started.

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• Keyboard Shortcuts in Win 7 without the CTRL + ALT

  - by Carlos

  I am knew to this site and don't know if I'm doing this correctly. I've been asked to edit my original post so I deleted my original post and starting over. I don't know why it's so hard for everyone to understand what I'm trying to do. You guys are all geniuses when it comes to computers and I'm just starting out. I started out trying to use a shortcut to display the LOCAL AREA CONNECTION window on my desktop by creating a shortcut and assigning it CTRL + , (comma). Windows didn't like that so it added ALT which ended up being CTRL + ALT + ,. Since I couldn't figure out a way to eliminate ALT as part of the shortkey keys, I am now trying a different strategy and it's not working. my latest attempt is to run the following command; ^,:: Run, explorer:: {BA126ADB-2166-11D1-B1D0-00805FC1270E} Can someone please tell me what I'm doing wrong? I'm trying, just give me a chance. Thanks, Carlos

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• How do I configure an interface to have *both* a DHCP address and a static address in Ubuntu?

  - by Paul Hoffman

  In a lab setup, I want eth0 on a Ubuntu server box to get a DHCP address for talking to the outside world, and I also want to assign it a static 10.x.y.z address for talking to other boxes on the local network that have 10.x.y.z addresses. I want to do this by editing /etc/network/interfaces. The man page for /etc/network/interfaces is modeled after "here's a bunch of examples, I hope you can figure out the actual rules on your own". I don't see a way to give one interface two addresses using two different methods (static and dhcp), and initial fumbling didn't produce useful results.

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• Using naked domain in apache, no "www" on domain in httpd.conf

  - by chrsdgtl

  Incredibly there is no good tutorial or easy reference guide for using naked domains (no subdomain) as the primary URI online that I could find. I'm trying to configure this to happen in my httpd.conf in apache. Since I'm still a relative newb to this server stuff, trying to figure it out myself all I could do was configure some nasty redirect loops and error 400's. There's plenty of notes for the more common: http:// -- https:// and naked to -- www. and a ton of .htaccess stuff (not interested) What I want is http://www.domain.com -- http://domain.com The most helpful thing I found was this: Multiple domains (including www-"subdomain") on apache? I ended using the solution mentioned by ceejayoz in that post that some folks noted was messy and complicated because it got the desired result but I'd like to know the best practice for this in the future. I'd appreciate a nudge in the right direction. Thanks in advance.

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• Operation not permitted when starting Unicorn

  - by fiskeben

  I've created an nginx/unicorn/capistrato setup on Ubuntu (Amazon EC2) by following mostly this guide. I guess everything is set up like it should but when I start Unicorn I get (a LOT of) this error in the log: E, [2012-09-08T08:57:20.658092 #12356] ERROR -- : Operation not permitted (Errno::EPERM) /home/deployer/apps/bridgekalenderen.no/shared/bundle/ruby/1.9.1/gems/unicorn-4.3.1/lib/unicorn/worker.rb:82:in `initgroups' I see it's related to the user's permissions but I just can't figure out what I've left out. The server starts up nicely if I start it with sudo (or, rvmsudo, really). The user has sudo capabilities, I have chmod'ed the app several times so the file permissions there should be ok. The unicorn socket in /tmp is owned by the deployer user, so that shouldn't be the problem either. Does anybody have a clue where to look?

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• Configuring RealVNC to accept copy/paste on a remote server

  - by AP257

  Hi So, I'm using RealVNC Viewer locally (Mac OSX 10.6) and connecting to a VNC Server on a remote machine (Debian - I'm no Unix expert). I want to be able to copy and paste at the command line, but Ctrl+V, Shift+V and Command+V all do nothing on the remote command line. First question: should I be trying a different combination of keys? Secondly, if it's not that I'm using the wrong combination of keys, how can I configure VNC Server to accept copy and paste? I have 'Share clipboard with VNC Server' checked locally, so I figure it must be a problem on the remote machine. I only have command-line access on the remote machine (though I am root) so I need to configure the option somehow via the command line.

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• phpbb3 email settings for Zoho SMTP server

  - by SkylarMT

  I've spent a while guessing and googling, and haven't found an answer. In the past I setup my forums to send via my Gmail account, but spambots with fake emails have flooded my inbox, so I setup [email protected] with Zoho mail. Now I need to have my installation of phpbb3 send mass emails through the smtp.zoho.com mail server, and I can't figure out what settings I should use. The instructions on https://www.zoho.com/mail/help/pop-access.html are a little vague for anything that doesn't auto-detect the exact settings.

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• How to set _optimizer_search_limit and _optimizer_max_permutations in Oracle10g.

  - by user52856

  I am working on a product that must support both MSSQL and Oracle (10g and 11g). I have some very complex queries that seem to run without issue on MSSQL 2005/2008, but very, very slow with Oracle. The CPU on the oracle server skyrockets for long periods of time, and it seems like the optimizer may be trying to find the best execution plan for the very complex query. I did some Googling to figure out how to limit the amount of time the optimizer spends on this, and came up with _optimizer_search_limit and _optimizer_max_permutations. Both of these parameters are hidden in Oracle 10g, and setting them in init.ora doesn't seem to make any difference. How do I set these parameters in Oracle. Or am I just totally barking up the wrong tree with the assumption that the optimizer is spending several minutes finding an execution plan? Thanks.

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• Wyse Z Class Thin Client (WES7) Image Deployment

  - by nsr81

  We are currently working on deploying a few Wyse WES7 thin clients (Z Class, exact model escapes me at the moment). We have WDM setup, and are able to see new clients show up, interact with them, pull/push images. Our current workflow is something like this: Unpack & boot up the device Disable Windows Firewall, reboot Device shows up in WDM Publish our custom image to the new device. My question is whether or not there is a way I can bypass step 2, and put my image on the client right out of the box. Either using PXE or USB boot disk, such that I can boot into some sort of menu and tell the client to pull a particular image from the WDM server. With HP thin clients, we have a rule setup which detects new clients on the network and pushes our custom image to them first time they show up. I haven't been able to figure it out with Wyse.

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• CPU Usage at 100% with "Hardware Interrupts"

  - by eventualEntropy

  After turning on my desktop one day, I found that my CPU usage was maxed out at 100%, with 99% of that going to hardware "Interrupts". I tried to enable/disable all my devices one by one through the device manager, and found that I could get the CPU usage used by the Interrupts down to 50% by disabling all devices labelled "USB Host Controller" (except the ones for the mouse/keyboard). I found that I also got 10-20% more from disabling "High Definition Audio Controller". Following the tutorial at: http://www.msfn.org/board/topic/140263-how-to-get-the-cause-of-high-cpu-usage-by-dpc-interrupt/ Led me to similar conclusions (that is, that the culprit is mostly "USB Host Controller"): I've tried updating my asus motherboard driver and my video card driver. This is on Windows 7 64 bit. I've spent hours trying to figure this out and I'm running out of ideas short of formatting (which might still not fix it!).

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• Security permissions for remote shared folders

  - by Tomas Lycken

  I have two servers running Windows Server 2003, and I want copy files from one server (A), programmatically with a windows service running under the Local System account, to a shared folder on the other (B). I keep getting "access denied" errors, and I can't figure out what security settings I need to set to open the shared folder for writing. This is what I've done on the recieving end: On A, right-click on the folder to share, choose the tab "Sharing" and select "Share this folder". Set a share name. Click "Permissions", add the group "Everyone" and give it full control. I tried choosing the "Security" tab to give some permissions there as well, but the "Add" dialog only finds local users, despite the fact that B shows up in the "Workgroup computers" dialog. After further inspection, this is the case also for the "Permissions" dialog under the "Sharing" tab (are they the same?).

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• Blocking an IP range without using .htaccess

  - by Chris

  I have a WordPress blog that I am hosting using NearlyFreeSpeech.net. Recently, Russians found it and have been comment spamming me. I don't want to have to trash 30+ Cyrillic comments/day, and I don't want to pay for that bandwidth either. I did a little research, and all the commentors are originating from RIPE delegated IP ranges. Because my blog can only interest people living in the American Southeast, I figured the quick and dirty solution would be to use .htaccess to deny connections coming from 62.0.0.0/8 and 80.0.0.0/8 - 91.0.0.0/8. I wrote a .htaccess file that did just this, but the Russians were still getting through! According to NearlyFreeSpeech.net's FAQ, they can't support IP blocking through .htaccess (dirt cheap hosting comes with a price). I can block comments by IP through Wordpress (I think), but I can't figure out a way to block IP ranges or wildcards. Does anybody know of any other way?

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• How does firefox chose which plugin to use?

  - by Brian Postow

  I have written a plugin which allows the user to view multi-page TIFF images within firefox. The problem is that Quicktime also thinks it can view TIFF images. How does Firefox chose which one gets used? through trial and error I've determined that: Sometimes, my plugin (Accel VIewTIFF) just runs, and everyone is happy. Sometimes I need to disable Quicktime in the Add-ons window. Sometimes I need to remove the QuickTime plugin files from the / Library/Internet Plug-ins folder (I'm on a mac) Sometimes I can put QuickTime BACK after having successfully run Accel ViewTIFF. I've yet to figure out when (if ever) each step is necessary. Please help me escape the cargo cult! (or at least point me to the right place in a manual.) thanks.

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• .htaccess - permissions forbidden

  - by user1732521

  I have an error with a new virtual host that I can't figure out.. My .htaccess doesn't have web access (403). [Thu Oct 31 17:51:01 2013] [crit] [client ] (13)Permission denied: /srv/data_disk/www /site.dev/.htaccess pcfg_openfile: unable to check htaccess file, ensure it is readable I have set the permissions for the complete htdocs folder to 755, and to owned by my regular user and group (www-data). I have other vhosts set up with the same user and lesser permissions (rw-rw---) on the .htaccess. The virtual hosts are also setup in the same way.. as far a I can tell.. Thanks!

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• Is it possible to change the content database of an existing SharePoint '07 web app?

  - by mcjabberz

  Disclaimer: I'm very much an accidental SharePoint admin so I greatly appreciate your patience. My SharePoint farm's database server is EOL and about to die. I have managed to get the config database (SharePoint_Config) moved over to the new database server and even managed to get the Central Administration site to use the new database server. I have even added the new database server to the farm as a content database server. My problem right now is with the web app's content database (WSS_Content). I already have a copy of the content database setup and ready to go on the new database server but, for the life of me, I can't figure out how to change the SharePoint web app's database over to it. Is this even possible? If so, how would I do it? If not, would I have to create a new web app and then restore (and overwrite) its WSS_Content database with my existing one?

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• Requiring SSH-key Login Via PAM From Specific IP Ranges

  - by Sean M

  I need to be able to access my server (Ubuntu 8.04 LTS) from remote sites, but I'd like to worry a bit less about password complexity. Thus, I'd like to require that SSH keys be used for login instead of name/password. However, I still have a lot to learn about security, and having already badly broken a test box when I was trying to set this up, I'm acutely aware of the chance of screwing myself while trying to accomplish this. So I have a second goal: I'd like to require that certain IP ranges (e.g. 10.0.0.0/8) may log in with name/password, but everyone else must use an SSH key to log in. How can I satisfy both of these goals? There already exists a very similar question here, but I can't quite figure out how to get to what I want from that information. Current tactic: reading through the PAM documentation (pam_access looks promising) and looking at /etc/ssh/sshd_config.

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• Cannot receive email outside domain with Microsoft Exchange

  - by Adi

  This morning we couldn't receive email from outside our company's domain (domain.com.au), but we can send email to outside (e.g hotmail, gmail, yahoo). When I tried to send email to my work email address using my gmail account, I received this message Technical details of permanent failure: Google tried to deliver your message, but it was rejected by the recipient domain. We recommend contacting the other email provider for further information about the cause of this error. The error that the other server returned was: 550 550 Unable to relay for [email protected] (state 14). I tried using telnet to send email, and it works. But still I couldn't figure out why I can't receive email from outside. I'm not sure if I provided enough info. I'll try to provide as much info as needed to help me solve the problem. Thanks

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• How do I calculate the amount of tuning needed for my server ?

  - by Low Kian Seong

  I have a server which is running a few discrete Python, Java application which most of the time imports data into a PostGreSQL database. I would like to know from people out there who have experience tuning enterprise grade servers how do i go about calculating in a holistic way the amount of tuning needed for my server for example vm.swappiness, vm.overcommit_ratio and other numerical tunings needed for my server. I tried to enable sar on my server to capture daily numbers but these are more along the lines of total numbers and I can't figure out how to allocate memory for my applications. Help would be appreciated. Thanks.

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• VNC over SSH on open Tunnel

  - by Joey Bagodonuts

  Is it possible to bind VNC server to a open SSH tunnel? I have a tablet that has initiated a reverse ssh tunnel to my server. This works fine over port 8080. I need to now bind to this port from my local machine. It looks like Ubuntu has some "remote desktop viewier" that has ssh built in capabilities so I assume the only thing I need to do now is figure out how to bind the tablets VNCserver to the open SSH tunnel. Is this possible? Thanks

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• How to setup VIM for php development?

  - by Ashwin kumar

  I have been trying a lot (but not smartly) to figure out setting up VIM, ctags, omnicomple for PHP development. On Googling I found this file. But have no clue how to use it. What have I done until now? Here it is: I am on Fedora 17 64-bit OS Logged in as root Found my VIM version to be VIM - Vi IMproved 7.3 (2010 Aug 15, compiled May 8 2012 15:05:51) Followed the install details as here http://www.vim.org/scripts/script.php?script_id=3171 install details Place in $HOME/.vim/autoload/phpcomplete.vim and enable the php ftplugin What else I am missing? How do I start using omnicomplete. (this is the first time I am using omnicomplete) Why didn't I try IDE's? I have a single core machine running LAMP stack. Didn't wanted to slow down everything and hence sticking to command line environment.

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• What key works like End using a Mac with Synergy

  - by Toby Allen

  I have recently got a Mac mini to do IPhone Dev on (like many others) and I am using the excellent Synergy to share one keyboard and mouse with 2 machines and 2 monitors. Everything is lovely and it works a treat. I got used to using the mac, and the alt key works like command button on the mac however one thing I cant figure out is the End key. I use this a lot on windows when wanting to jump to the end of a line of text, however if I press it over synergy on my mac it jumps to the end of the page. Anyone know the key combination I need to get what I want?

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• Is there a Windows equivalent of Unix 'CPU steal time'?

  - by Steffen Opel

  In order to assess performance monitoring accuracy on virtualization platforms, the CPU steal time has become an increasingly relevant metric - see EC2 monitoring: the case of stolen CPU for an instructive summary in the context of Amazon EC2 and IBM's paper on CPU time accounting for a more in-depth technical explanation (including illustrations) of the concept: Steal time is the percentage of time a virtual CPU waits for a real CPU while the hypervisor is servicing another virtual processor. Accordingly, it is exposed in most related Unix/Linux monitoring tools nowadays - see e.g. columns %steal or st in sar or top: st -- Steal Time The amount of CPU 'stolen' from this virtual machine by the hypervisor for other tasks (such as running another virtual machine). I've been unable to figure out how to capture the same metric on Windows though, is this possible already? (Ideally for the Windows 2008 Server R2 AMIs on EC2 and via a respective Windows Performance Counters of course.)

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• On Server Disk Storage VS SAN Storage

  - by Justin

  Hello, I am looking at buying three servers, and trying to figure out which storage solution makes the most sense in terms of performance and cost. Total budget is around: $10,000. OPTION 1: Dell servers with RAID 10 (4 Drives) each 7200RPM SAS 500GB, for a total capacity of 1TB. Each server is approx: $3000. Total storage then across all three servers is 3TB. OPTION 2: Same Dell servers with a cheap single drive no RAID for $2000 and go with a centralized SAN solution. The biggest problem is that I haven't been able to even find a SAN solution that is a reasonable price. Dell entry level storage servers are like $15,000. I am thinking just iSCSI, not fiber (too expensive). What do you guys recommend?

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• SCSI direct-access device appears as multiple lun's

  - by unixdj

  I have a similarly described problem to this question: http://superuser.com/questions/90181/same-scsi-drive-appears-multiple-times-on-the-controller-list where a SCSI direct-access device appears as multiple lun's, when it should only be one. The device is a SCSI-1 device, the SCSI controller card is an Adaptec AHA-7850 (rev 03), and system is PC / Linux 2.6. This device worked fine with RHEL4, and appeared as a single device / lun when the OS booted, but I've just tried plugging the device into a newer Linux disto (CentOS 5.4) and it now sees the device as 8 luns; with consequently 8 device files /dev/sgb to /dev/sgi. Any clues of how to figure out where the problem / fix is, would be great.

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• How do I create an ad hoc network in Windows 8?

  - by George Edison

  For the life of me, I can't figure out how to create an ad hoc wireless network in Windows 8. Here is what happens if I follow the steps from Windows 7: Right click the network icon and click "Network and Sharing Center": Click "Set up a new connection or network": Where is the option to create an ad hoc network? Therefore I have two related questions: Did I miss something? Is it in there somewhere and I just haven't found it yet? If this feature is not available, is there a tool somewhere I can use that provides this capability? Further information: I have an Intel Wireless WiFi 4965 AGN adapter. I tried the Intel PRO wireless tool and it didn't offer an ad hoc option.

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