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• how does svn work with apache?

  - by ajsie

  i've got ubuntu installed with lamp. im using webdav to upload/download files to/from the ubuntu web server, after i have edited the php source files in netbeans. however, i wonder what is best practice for editing source files and committing these changes to the new website. cause if we are 2-3 developers, i guess we have to use svn. but i have never used it before so i wonder how it works. should i install it and then select the /var/www (apaches webroot) as the repository folder? then when i check in, all the changes will apply immediately? could someone please explain following steps: how to download, edit the source files, upload the files and see the new changes in the website. cause i have only worked with a local apache before, and it was only me. now there will be some more programmers so i have to set up a decent, central environment for this, and have to know how netbeans, svn, webdav and apache works all together. thanks!

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• Cannot print certain colours on Ubuntu with HP Laser Printer

  - by ILMV

  We have a load of machines running Ubuntu in our office, they are either on 8.04 or 9.10. We have a server which connects a HP JetDirect that connects to a HP 3550 Colour Laser printer using CUPS. The problem we are having is we cannot print red, magenta or yellow at 100%, I've got a picture of the Ubuntu test page to demonstrate my problem: This is obviously a pretty big problem as we are constantly receiving documents with these colours and cannot successfully print them off, we cannot just switch the grayscale, our business depends on being able to print colour (seems trivial but we handle lots of artwork). We're using the recommended driver HP Color LaserJet 3550 footmatic/pxljr (recommended), there is another driver in the list labelled HP Color LaserJet 3550 footmatic/hpijs. These are production printers so need to make sure any setting change won't kick is in the nuts. It would appear HPIJS is for HP Inkjets, makes sense I guess. The problem doesn't occur in Windows. RESOLVED I've managed to solve the problem, I did indeed use the HPIJS driver (apparently for inkjets) but it seems to have worked, we're going to roll with it for now to see how we get on with it.

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• Extract large zip file (50 GB) on Mac OS X

  - by chingjun

  I was trying to move the files to another hard drive. So I archived all my photos in one large ZIP file using the Mac OS X built-in compress function. But the file failed to extract. I've tried many programs, but none of the programs I tried were able to extract the file. I've tried Mac OS X's extract utility, StuffIt Expander, 7-Zip (command line), all failed. Mac's archive utility and StuffIt don't seem to support large files, and 7-Zip's command line version gave an error stating unsupported archive. I have no luck in Windows either as many of my files have Chinese filenames, and couldn't extract to the correct name under Windows. Are there some programs that can support large files, can handle files compressed using Mac OS X's compress function, and can support UTF-8 filename? With or without GUI is fine. Update Well, I had made the wrong decision to compress the files, and it's already too late. I thought I should be able to extract the file if I could compress it. It's too late, the original copies are gone, only a large ZIP file left here. I have tried using 'unzip', but it says End-of-central-directory signature not found. I guess it doesn't have large file support as well. I would try the Windows Vista method as stated by SuperMagic, but I need to borrow a computer for that. Anyway, thank you everyone, but please provide more suggestions on what software that could possibly extract that file.

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• Zero sized tar.gz file found inside a tar.gz file

  - by PavanM

  My current directory contains a single file like this- $ls -l -rw-r--r-- 1 root staff 8 May 28 09:10 pavan Now, I want to tar and gzip this file like $tar -cvf - * 2>/dev/null |gzip -vf9 > pavan.tar.gz 2>/dev/null (I am aware I am creating the zipped file in the same directory as the original file) When I run the above tar/gzip commands around 20 times, a few times I observe that the final tarred and zipped file pavan.tar.gz file has a ZERO sized pavan.tar.gz file. I am not sure from where is this zero sized file coming into the archive from. Note: I am NOT running tar/gzip commands on an already existing tar.gz file. I always make sure that the directory has only one file before running the commands On googling, as described here, I suspected that the tar.gz being created was also part of the file being archived. But in my case, gzip is the one who's creating the final file and by the time gzip runs, tar should be done tarring. This is happening on AIX but I've used Linux tag too, to draw more attention, as I guess the problem is platform independent.

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• GoDaddy SSL on Shared Hosting

  - by Jon

  So I'm very new to using SSL certificates and I have been trying to install one on a site for a client. He is using shared hosting for multiple domains through GoDaddy, and the site we're working on is not the primary domain. He purchased a UCC certificate for multiple domains and I installed it on the shared hosting account. My thought was that since the domains were under the same hosting account, then they would each be protected under the certificate. This was not the case...apparently. I checked both domains with an SSL checker and the primary domain checked out. The domain that we wanted the SSL on showed the following errors: None of the common names in the certificate match the name that was entered (www.CLIENTDOMAIN.com). You may receive an error when accessing this site in a web browser. I'm not sure how to fix this. It was just purchased yesterday, so if necessary, I guess I could un-install it or re-key it (???). Is there a way to just change the common name to www.CLIENTDOMAIN.com (the correct domain)?

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• Windows 7 autostarting apps as administrator

  - by Fujishiro

  Hello everyone. The question is easy to answer I guess. (Tried to search here, didn't find an answer.) So. The deal: There is a bug in OpenOffice (haha ..just one? :)), which prevents the spellcheck. You have to start it with right-click , run as administrator to make it work. Tried also setting this at the 'properties', but it didn't work. But 'quickstart.exe' would be also enough to make this work. (OpenOffice's quickstarter). So I'd like to run it at boot, as an admin, like I'd do with right-click. How to do THAT? (Actually there is a different bug for spellcheck on Win7. One have to run oowriter.exe as an admin, and then install the extension BY HAND from Program Files...\share...*.oxt. And THEN it'll work IF you run the app as an admin. (I'll buy SoftMaker's office as soon as the hu spellcheck arrives, but until then I have to make this work. Thanks for the answers in advance.))

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• OpenLDAP, howto allow both secure (TLS) and unsecure (normal) connections?

  - by Mikael Roos

  Installed OpenLDAP 2.4 on FreeBSD 8.1. It works for ordinary connections OR for TLS connections. I can change it by (un)commenting the following lines in slapd.conf. # Enable TLS #security ssf=128 # Disable TLS security ssf=0 Is there a way to allow the clients to connect using TLS OR no-TLS? Can the ldap-server be configured to support both TLS connections and no-TLS connections? Tried to find the information in the manual, but failed: http://www.openldap.org/doc/admin24/access-control.html#Granting%20and%20Denying%20access%20based%20on%20security%20strength%20factors%20(ssf) http://www.openldap.org/doc/admin24/tls.html#Server%20Configuration Tried to read up on 'security' in manualpage for ldap.conf, didn't find the info there either. I guess I need to configure the 'secure' with some negotiation mechanism, "try to use TLS if client has it, otherwise continue using no-TLS". Connecting with a client (when slapd.conf is configure to use TLS): gm# ldapsearch -x -b '' -s base '(objectclass=*)' namingContexts ldap_bind: Confidentiality required (13) additional info: TLS confidentiality required gm# ldapsearch -Z -x -b '' -s base '(objectclass=*)' namingContexts (this works, -Z makes a TLS connection) So, can I have my ldap-server supporting client connections using TLS and ordinary (no-TLS) connections? Thanx in advance.

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• Why is windows 7 rejecting my key?

  - by acidzombie24

  I'm extremely confused. I have a genuine key and CD (I can take photos) and I am trying to install windows on my new tower. I believe this would be the 3rd PC i installed it (old, laptop now new tower). However i did change the HDD once but i doubt windows would think its a different computer bc of that. After going through phone activation it said i installed it on to many pcs..... i'm extremely confused. I'll be happy to deactivate it off my old tower if i knew how. I already grabbed all the files off of it. I tried to look up the amount of boxes i can install windows home premium on and found this http://en.wikipedia.org/wiki/Windows_7_editions What stuck out was this Maximum physical CPUs supported[40] 1 1 1 2 2 2 My new tower has 4cores (its the intel i7) but has two threads each so it sees 8. Does that have anything to do with this? But apparently ultimate supports '2'. I'm sure windows support more than 2 cpus so... what gives? Actually its physically one CPU so i guess the number of cores doesn't matter? Why is windows 7 rejecting my key?

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• Remote desktop solution where the desktop sharing party contacts the computer it wants to share with

  - by Kent

  I'm in a situation where I act as a sort of techinical support to my family and less techinically experienced friends. I'm looking for a remote desktop solution where it's possible to setup a "zero-install, double click an icon"-solution where the client computer contacts me so that I may interact with their desktop. The last part is important as the people in need of my help don't know how to configure their router or even the firewall software on their own computer. They are able to click an accept button when asked if a program should be able to make outgoing connections. They have many different kinds of routers, as well as software firewalls, and I rather not deal with the problem of how to connect to them using whatever as well as the actual problem they are having. It must be: Free of charge for non-commercial use. Possible to use it in a mode where the computer wanting to share its desktop should be able to make a connection to my computer. My computer has a DNS name we can use. Compatible with both Windows XP and Windows 7. Independent of a third party server or infrastructure. Explanations of the above: I don't want to spend money on it when I help them for free. If it's free as in freedom, all the better! I guess this boils down to being callable like showdesktopto.exe opscomputer.com where opscomputer.com is my computers DNS name. If that is possible then I can create a shortcut they can use to connect to me when they need help. It's nice if it's possible to specify a password or key file which I can use to authenticate myself, but it's not required. They use the OS which their machine comes installed with. That means Windows XP or 7. I want something which will work in the long run. Using a third party service which might not be available when I need it disqualified such solutions.

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• Add Route for machine in same DC

  - by gary

  My routing table on my machine with IP of 46.84.121.243 currently looks like this - Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 46.84.121.225 46.84.121.243 21 46.84.121.224 255.255.255.224 On-link 46.84.121.243 276 46.84.121.239 255.255.255.255 On-link 46.84.121.243 21 46.84.121.243 255.255.255.255 On-link 46.84.121.243 276 46.84.121.255 255.255.255.255 On-link 46.84.121.243 276 I'm trying to access 46.84.121.239, which is my other machine in the same DC but my guess is the first rule is blocking it as it is trying to go via the gateway and failing - Tracing route to [46.84.121.239] over a maximum of 30 hops: 1 OWNEROR-9O83HBL [46.84.121.243] reports: Destination host unreachable. Trace complete. I'm doing all this via RDP and already tried changing the metric on the persistent rule with devastating consequences! Here's the persistent rule (working) - Persistent Routes: Network Address Netmask Gateway Address Metric 0.0.0.0 0.0.0.0 46.84.121.225 1 Any help to be able to access the 46.84.121.243 would be very helpful thanks very much.

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• DHCP Server on local machine

  - by EralpB

  Hello I am trying to setup a dhcp3-server on Ubuntu. But my question is more generic, if dhcp server is in a blockbox and all clients are connected to it I think I get what is going on but when dhcp server is installed on one of the "clients" that confuses me. When I send a dhcp packet from that client to the dhcp server, will my ethernet card read and write at the same time? Or will it handle it internally without writing any data to ethernet cable. It's the first time I am encountering these network things so I am a little bit confused. Also I wonder If I am in a big network with lan IP let's say 192.168.0.100 and I install a dhcp server to my computer, can any other computers accidentally get IP from my dhcp server? Every computer has one ethernet card (if that matters?). And every computer is connected to one router. I guess the answer is no because the broadcast message won't reach to my computer since when router receives a dhcp search packet it will answer and it won't let other computers know about it because they don't need to. And without router sending that packet one by one, it cannot travel further. I'd be glad if someone enlightens me. Thank you very much.

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• Blender refuses to start

  - by Sekhemty

  I'm trying to run Blender under Linux, but I'm unable to do that, whenever I try I get some errors. I'm using Kubuntu 12.04 with KDE 4.11.1. This is my video card: ~$ lspci | grep VGA 01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RV610/M74 [Mobility Radeon HD 2400 XT] I used to have installed the fglrx proprietary Catalyst drivers, but lately they gave me some system-wide problems and I had to revert to the open source Mesa drivers (I don't think that these details are important, but just in case, the whole story is here). Whit the fglrx drivers Blender was running fine, but now, whenever I try to start it, I get this error message (some parts are in italian, but I think that they are easily understandable): ~$ blender connect failed: No such file or directory Writing: /tmp/blender.crash.txt Errore di segmentazione (core dump creato) The content of /tmp/blender.crash.txt is as follows: # Blender 2.68 (sub 5), Revision: 60150 # backtrace /usr/lib/blender/blender() [0x877a41f] [0xb7756400] /usr/lib/i386-linux-gnu/libLLVM-3.0.so.1(_ZN4llvm3ARM8SPRClassC1Ev+0x15) [0xa8f4a9d5] /usr/lib/i386-linux-gnu/libLLVM-3.0.so.1(+0x25ca48) [0xa8eefa48] /lib/ld-linux.so.2(+0xeeab) [0xb7765eab] /lib/ld-linux.so.2(+0xef94) [0xb7765f94] /lib/ld-linux.so.2(+0x12fa6) [0xb7769fa6] /lib/ld-linux.so.2(+0xeccf) [0xb7765ccf] /lib/ld-linux.so.2(+0x127f4) [0xb77697f4] /lib/i386-linux-gnu/libdl.so.2(+0xbe9) [0xb4ff9be9] /lib/ld-linux.so.2(+0xeccf) [0xb7765ccf] /lib/i386-linux-gnu/libdl.so.2(+0x133a) [0xb4ffa33a] /lib/i386-linux-gnu/libdl.so.2(dlopen+0x47) [0xb4ff9c97] /usr/lib/i386-linux-gnu/mesa/libGL.so.1(+0x3cbf0) [0xb7717bf0] /usr/lib/i386-linux-gnu/mesa/libGL.so.1(+0x4079d) [0xb771b79d] /usr/lib/i386-linux-gnu/mesa/libGL.so.1(+0x1a3aa) [0xb76f53aa] /usr/lib/i386-linux-gnu/mesa/libGL.so.1(glXQueryVersion+0x2e) [0xb76f0cee] /usr/lib/blender/blender(_ZN15GHOST_WindowX11C1EP15GHOST_SystemX11P9_XDisplayRK10STR_Stringiijj18GHOST_TWindowStatei25GHOST_TDrawingContextTypebbt+0x11c) [0x8f54aec] /usr/lib/blender/blender(_ZN15GHOST_SystemX1112createWindowERK10STR_Stringiijj18GHOST_TWindowState25GHOST_TDrawingContextTypebbti+0xd7) [0x8f4f4a7] /usr/lib/blender/blender(GHOST_CreateWindow+0xb6) [0x8f4cf86] /usr/lib/blender/blender(wm_window_add_ghostwindows+0x205) [0x8799be5] /usr/lib/blender/blender(WM_check+0x50) [0x877b670] /usr/lib/blender/blender(wm_homefile_read+0x111) [0x87859f1] /usr/lib/blender/blender(WM_init+0xd2) [0x8787872] /usr/lib/blender/blender(main+0xe6e) [0x873848e] /lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xf3) [0xb4e694d3] /usr/lib/blender/blender() [0x8778a99] The only thing that I can guess from this report is that the mesa drivers are somewhat involved, as I already suspected, but I don't have a clue on what I need to do to try to solve the issue.

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• NAT ports - how do they work?

  - by Davidoper

  I have the following network schema: Computer A: three nics: NIC 1 (eth0): dhcp, public internet NIC 2 (eth1): static 192.168.1.1, gateway for Computer B NIC 3 (eth2): static 192.168.2.1, gateway for Computer C Computer B: static 192.168.1.2, using gateway 192.168.1.1 (NIC 2). Computer C: static 192.168.2.2, using gateway 192.168.2.1 (NIC 3). So I applied this to get NAT working: iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE Every computer can connect to the internet now. I have been applying rules to the main computer (Computer A), like dropping connections to some ports, e.g ssh: iptables -A INPUT -p tcp --dport 22 -j DROP But for instance, now I would like only allow connections for ports 20,21,22,53 and 80 in Computer C, and ignore the outside traffic if it's not related to those ports. The allowed connections should be FROM Computer C to outside, but not from outside to Computer C (I mean - Computer C is not hosting any HTTP or SSH, but it is going to use them as a client). I guess this sould be done like this: iptables -A OUTPUT -i eth2 -o eth0 -p tcp --dport 21 -m state --state NEW,ESTABLISHED -j ACCEPT iptables -A INPUT -i eth2 -o eth0 -p tcp --sport 21 -m state --state ESTABLISHED -j ACCEPT The last rule (dropping any other traffic different from those) is at the end of the configuration, so -A should be working correctly. The thing is... it is not working. If I put the last rule like this: iptables -A FORWARD -i eth2 -o eth0 -j DROP It just drops everything and, for instance, port 21 (previously opened as you can see above) is not either working. Can you tell me what could I have done wrong? I have been struggling with this problem for some time and I am unable to solve it. Thanks!

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• Dell Poweredge 1950 with Perc 5i keeps losing raid config -> "Foreign Configuration Found"

  - by nosage

  The quick and dirty: the machine is a Dell Poweredge 1950, dual xeon quad cores, 8GB of ram, 2 2TB seagate SATAs in (supposed to be raid1) using a Perc 5i raid card. They are hot-swappable with a back-plane. I can build the raid fine and after a little while an install of server 08 r2 will blue screen and restart. When it comes up the raid controller says "Foreign Configuration Found." When I go into the raid configuration panel there is no raid listed but I can import the "foreign config", and the OS will boot up fine, until it blue screens again after a little while. The issue is OS independent. I have tried swapping raid cards, swapping the RAM module on the raid card and swapping the raid battery, all to no avail. Its almost as if there is a loose connection from the raid card to the back plane and both of disks get lost and the raid card drops the config. But it sees the disks fine when it boots back up. The raid card uses a SCSI SAS cable to connect to the back-plane so I guess the next step is to replace that, but... then I might as well replace the back-plane with a SCSI SAS to sata breakout cable, but... then I need a way to power the disks. Sorry for the wall of txt but it would be great to get some thoughts from people who worked with perc raid cards or poweredge servers with this type of issue before. Ironically I want to get this system up and running so I can work on MCITP labs. Thank you for any/all help and feel free to ask questions!

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• nginx rewrite regex for API versioning

  - by MSpreij

  What I want is for the first to be turned into the second.. /widget => /widget/index.php /widget/ => /widget/index.php /widget?act=list => /widget/index.php?act=list /widget/?act=list => /widget/index.php?act=list /widget/list => /widget/index.php?act=list /widget/v2?act=list => /widget/v2.php?act=list /widget/v2/?act=list => /widget/v2.php?act=list /widget/v2/list => /widget/v2.php?act=list v2 could also be v45, basically "v\d+" act, "list" in this case, can have many values and more will be added. Any additional query parameters would just be passed on with $args, I guess. Basically URLs not specifying the version will go to index.php, which can then decide what specific version file to include. What I am afraid of happening is loops - this should sit in location /widget { right?. (As for putting the version of the API in the URL, I'm not trying to be RESTful, and target audience is small) Resources on how to do this entirely in index.php using "routers" also welcome :-/

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• Unable to access stackexchange sites from this system

  - by Sandeepan Nath

  Earlier, I was not able to access most of the stackexchange sites like stackoverflow, programmers.SE etc. on my home Windows XP system. I was able to access only a few like http://meta.stackexchange.com and not even http://www.meta.stackexchange.com (note the www). I tried many other sites like http://www.stackoverflow.com, http://area51.stackexchange.com/ but was getting page not found errors on all browsers. Even pinging from terminal was saying destination host unreachable. I did not check recently but may be all SE sites are unreachable now. I was clueless about what could be the issue. I thought some firewall issue? So, I stopped AVG antivirus's firewall, then completely uninstalled it and even turned of windows firewall. But still not reachable even after fresh installation of Windows 7. Then I noticed a "Too many requests" notice on google. This page - http://www.google.co.in/sorry/?continue=http://www.google.co.in/# I don't know why this appeared but I guess somehow too many requests might have been sent to these sites and they blocked me. But in that case, SE would be smart enough to show a captcha like google. So, how to confirm the problem and fix it. Similar questions like these don't look solved yet - Unable to access certain websites Unable to Access Certain Websites I have lately started actively participating in lots of SE sites. There are new new questions popping up in my mind every time and I am not able to ask them. Please help! Thanks

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• How do I fix a custom Event Viewer Log that merges automatically with the Application log?

  - by NightOwl888

  I am trying to create a custom event log for a Windows Service on Windows Server 2003. I would like to name the custom log "(ML) Startup Commands". However, when I add a registry key with that name to HKLM\SYSTEM\CurrentControlSet\Services\Eventlog\, it adds a log but shows the exact same events that are in the Application log when looking in the event viewer. If I add a registry key with the name "(ML) Startup Commands 2" to the event log, it shows a blank event log as expected. In fact, any other name will work correctly except for the one I want. I have searched through the registry for other keys with the string "(ML)" and removed all other references to this key name, however I continue to get merged results in the viewer when I create a key with this name. My question is, how can I fix the server so I can create a custom event log with this name that shows only the events from my application, not the events from the default Application event log that is installed with Windows? Update: I rebooted the server and woudn't you know it, the log started acting normally. I got a strange error message in the Application log: The EventSystem sub system is suppressing duplicate event log entries for a duration of 86400 seconds. The suppression timeout can be controlled by a REG_DWORD value named SuppressDuplicateDuration under the following registry key: HKLM\Software\Microsoft\EventSystem\EventLog. For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. I can only hope this error doesn't mean the problem will come back after 86400 seconds. I guess I will have to wait and see.

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• Are relative-path symlinks reliable on Rackspace Cloud Sites?

  - by Jakobud

  Rackspace's Cloud Sites have a lot of stupid limitations. For example, no SSH (in or out), no shell, no RSYNC, etc... (even through cron). Recently I learned that you can't reliably use symlinks in Cloud Sites. Apparently this is because the absolute path of your sites could change at any moment, since it's a shared host environment split up between many disks/servers. I guess different account's sites get moved from disk to disk whenever Rackspace decides to. Supposedly to increase efficiency across the board. So after talking with a Rackspace tech, he said they cannot guarantee that symlinks would always work. Obviously this is because if you have a symlink that use's an absolute path like this: //mnt/disk-34566/home/user34566/files/sites/www.mysite.com/mydir If you files go moved to a different disk (or whatever they do), then the absolute path would be different and the link would now be broken. That makes sense. So next, I asked the Rackspace tech if relative path symlinks were reliable. So if I have the following link: files/sites/www.mysite.com/mylink --> ../www.myothersite.com/anotherdir You can see that the symlink simply points to a nearby directory's sub-directory. He said they cannot guarantee that even those would always work either. Since it uses a relative path to another nearby directory I'm not sure how it could ever break from something Rackspace would do. Do relative symlinks somehow rely on absolute paths underneath? Or is Rackspace using some weird custom filesystem where they will break from absolute path changes? It seems like a relative-path symlink would be fine and would only break if the user did something to mess up the directories involved. But when the tech's say that they "don't officially support symlinks of any kind" that makes me hesitant to use them for large commercial websites in Cloud Sites. Can anyone with Rackspace experience give input on this topic?

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• attach / detach mssql 2008 sql server manager [SOLVED]

  - by Tillebeck

  An external consult wrote a guide on how to copy a database. Step two was detach the database using Sql Server Manager. After the detach the database was not visible in the SQL Server Manager... Not much to do but write a mail to the service provider asking to have the database attached again. The service porviders answer: Not posisble to attach again since the SQL Server security has been violated". Rolling back to last backup is not the option I want to use. Can any one give feedback if this seems logic and reasonable to assume that a detached database in a SQL Server 2008 accessed through SQL Server Manager cannot be reattached. It was done by rightclicking the database and choosing detach. -- update -- Based on the comments below I update the question with the server setup. There are two dedicated servers: srv1: Web server with remote desktop and an Sql Server Manager srv2: Sql server that can be accessed through the Sql Server Manager on the web server -- update2 -- After a restart of the server the DBA could suddenly do the attachment of the database. And I guess that after the restart it was a simple task. So all of your answer were rigth! It seems that I can only mark one as a correct answer so I marked the first answer correct. But all are correct answer. Thanks a lot. Without posting the link to this thread then we might had so suffer while watching our database beeing restored by a backup :-) Thanks a lot. BR. Anders

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• How to make 7-Zip faster

  - by Matt

  I normally use WinRAR over 7-Zip simply because it's faster and only a little less efficient with compression. I did a few tests on different filetypes and sizes comparing the 7-Zip and WinRAR default settings on their normal compression and their best compression, and in a lot of cases WinRAR was 50% faster and in some it was actually 100% faster. But, I do like FOSS more. So here are my questions: Is there a way to make 7-Zip speed up? I'd like it to at least be on par with WinRAR's speed Is there a way to make recovery segments in 7-Zip like you can in WinRAR? I didn't see any, but I guess it could be a command line thing. I tested WinRAR and 7-Zip using the latest stable version of each (4-dot-something with 7-Zip). Is the 9.x beta release noticeably faster at compression? I'm talking about faster at a comparable setting in WinRAR, not just lowering to bare minimum compression. If it matters, I use a quad core Intel i7 720 (1.6 GHz)/(2.8 GHz) with 4 GB DDR3 RAM, and the 64-bit version of 7-Zip, and dual-boot Debian x64 5.0.4 and Windows 7 Home.

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• SFTP only works occasionally

  - by 82din

  I suddenly get this error using SFTP: Status: Connecting to example.com... Response: fzSftp started Command: open "[email protected]" 22 Command: Pass: ********* Status: Connected to example.com Status: Retrieving directory listing... Command: pwd Response: Current directory is: "/root" Command: ls Status: Listing directory /root Error: Connection timed out Error: Failed to retrieve directory listing I tried using FileZila, Cyberduck, Shell (Terminal), same result. However, it worked fine today (just a few seconds) in Passive mode. I guess something changed in my network, so I have tried both: Active and Passive mode: Connecting to probe.filezilla-project.org Response: 220 FZ router and firewall tester ready USER FileZilla Response: 331 Give any password. PASS 3.6.0.2 Response: 230 logged on. Checking for correct external IP address Retrieving external IP address from http://checkip.dyndns.org:8245/ Checking for correct external IP address IP <external IP> big-bf-ccc-f Response: 200 OK PREP 49565 Response: 200 Using port 49565, data token 380352881 PORT 186,15,222,5,193,157 Response: 200 PORT command successful LIST Response: 150 opening data connection Response: 503 Failure of data connection. Server sent unexpected reply. Connection closed Because I'm working behind a router, I get my external IP from http://checkip.dyndns.org:8245/ I also tested different range of ports.

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• How to check DVD region settings in Window 7

  - by jmatthias

  I have installed Windows 7 on my laptop. When I put a movie in the DVD drive, the video player starts up and tells me 'THIS DISC IS NOT FORMATTED TO PLAY IN THIS REGION'. I have changed the DVD region a few times in the past but while I was in Windows XP I changed the region in Region 1. I cannot find how to check the DVD region setting in Windows 7 (it's not located on the hard properties page of the DVD anymore. Does anybody know how to check the DVD region in Windows 7? Update: If I connect an external USB DVD drive I can see the DVD region tab on the hardware properties dialog. I guess there is some compatibility problem with my internal DVD drive and Windows 7 (as I said I was able to inspect/change the DVD region in Windows XP). Solution: I think I had used LtnRPC in the past to remove the region from my DVD drive. It looks like Windows 7 does not like region free DVD drives (at least mine anyway). I was able to use LtnRPC to reset the region back to 1. I can now see the region tab on the DVD drives hardware properties.

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• Sendmail in Nexenta core 3.0.1

  - by maximdim

  I'm trying to setup sendmail in Nexenta core 3.0.1 (Solaris based OS). All I want is to be able to send emails from that host - like notifications about failures, cron jobs output etc. Initially Nexenta core doesn't have sendmail so here is what I've done: apt-get install sunwsndmu Now there is a sendmail in /usr/sbin/sendmail. When I try to send email from command line: $mail maxim test . It doesn't give me any error but in log file I see: Dec 20 12:41:08 nas sendmail[12295]: [ID 801593 mail.info] oBKHf8u7012295: from=maxim, size=107, class=0, nrcpts=1, msgid=<201012201741.oBKHf8u7012295@nas>, relay=maxim@localhost Dec 20 12:41:08 nas sendmail[12295]: [ID 801593 mail.info] oBKHf8u7012295: to=maxim, ctladdr=maxim (1000/10), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30107, relay=[127.0.0.1] [127.0.0.1], dsn=4.0.0, stat=Deferred: Connection refused by [127.0.0.1] So I guess I need to have SMTP service running. How do I do that in Nexenta? svcs -a | grep sendmail doesn't return anything and # svcadm enable sendmail svcadm: Pattern 'sendmail' doesn't match any instances I'm not married to sendmail so if there are easier ways to achieve y goal I'm open to suggestions as well. Thanks,

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• Archive software for big files and fast index

  - by AkiRoss

  I'm currently using tar for archiving some files. Problem is: archives are pretty big, contains many data and tar is very slow when listing and extracting. I often need to extract single files or folders from the archive, but I don't currently have an external index of files. So, is there an alternative for Linux, allowing me to build uncompressed archive files, preserving the file attributes AND having fast access list table? I'm talking about archives of 10 to 100 GB, and it's pretty impractical to wait several minutes to access a single file. Anyway, any trick to solve this problem is welcome (but single archives are non-optional, so no rsync or similar). Thanks in advance! EDIT: I'm not compressing archives, and using tar I think they are too slow. To be precise about "slow", I'd like that: listing archive content should take time linear in files count inside the archive, but with very little constant (e.g. if a list of all the files is included at the head of the archive, it could be very fast). extraction of a target file/directory should (filesystem premitting) take time linear with the target size (e.g. if I'm extracting a 2MB PDF file in a 40GB directory, I'd really like it to take less than few minutes... If not seconds). Of course, this is just my idea and not a requirement. I guess such performances could be achievable if the archive contained an index of all the files with respective offset and such index is well organized (e.g. tree structure).

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• Allow access from outside network with dmz and iptables

  - by Ivan

  I'm having a problem with my home network. So my setup is like this: In my Router (using Ubuntu desktop v11.04), I installed squid proxy as my transparent proxy. So I would like to use dyndns to my home network so I could be access my server from the internet, and also I installed CCTV camera and I would like to enable watching it from internet. The problem is I cannot access it from outside the net. I already set DMZ in my modem to my router ip. My first guess is because i'm using iptables to redirect all inside network to use squid. And not allow from outside traffic to my inside network. Here is my iptables script: #!/bin/sh # squid server IP SQUID_SERVER="192.168.5.1" # Interface connected to Internet INTERNET="eth0" # Interface connected to LAN LAN_IN="eth1" # Squid port SQUID_PORT="3128" # Clean old firewall iptables -F iptables -X iptables -t nat -F iptables -t nat -X iptables -t mangle -F iptables -t mangle -X # Load IPTABLES modules for NAT and IP conntrack support modprobe ip_conntrack modprobe ip_conntrack_ftp # For win xp ftp client #modprobe ip_nat_ftp echo 1 > /proc/sys/net/ipv4/ip_forward # Setting default filter policy iptables -P INPUT DROP iptables -P OUTPUT ACCEPT # Unlimited access to loop back iptables -A INPUT -i lo -j ACCEPT iptables -A OUTPUT -o lo -j ACCEPT # Allow UDP, DNS and Passive FTP iptables -A INPUT -i $INTERNET -m state --state ESTABLISHED,RELATED -j ACCEPT # set this system as a router for Rest of LAN iptables --table nat --append POSTROUTING --out-interface $INTERNET -j MASQUERADE iptables --append FORWARD --in-interface $LAN_IN -j ACCEPT # unlimited access to LAN iptables -A INPUT -i $LAN_IN -j ACCEPT iptables -A OUTPUT -o $LAN_IN -j ACCEPT # DNAT port 80 request comming from LAN systems to squid 3128 ($SQUID_PORT) aka transparent proxy iptables -t nat -A PREROUTING -i $LAN_IN -p tcp --dport 80 -j DNAT --to $SQUID_SERVER:$SQUID_PORT # if it is same system iptables -t nat -A PREROUTING -i $INTERNET -p tcp --dport 80 -j REDIRECT --to-port $SQUID_PORT # DROP everything and Log it iptables -A INPUT -j LOG iptables -A INPUT -j DROP If you know where did I miss, please advice me. Thanks for all your help and I really appreciate it.

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