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• Bluetooth headset A2DP works, HSP/HFP not (no sound/no mic)

  - by Stefan Armbruster

  My Philips SBH9001 headset pairs fine using Ubuntu 12.04. In the audio settings it's properly detected as A2DP device and as HSP/HFP device. Hardware: Thinkpad X230, Ubuntu 12.04 64bit, Kernel 3.6.0-030600rc3-generic (build from Ubuntu mainline repo), Bluetooth device is USB-Id 0a5c:21e6 from Broadcom, Headset is a Philips SBH9001. Note: Kernel 3.6 rc3 is used because of a fix for audio on the dockingstation that is not in any previous branches. Playing audio in A2DP works just fine out of the box, but when switching the headset to HSP/HSP mode there is no sound nor does the microphone work. When connecting the headset, /var/log/syslog shows: Aug 25 21:32:47 x230 bluetoothd[735]: Badly formated or unrecognized command: AT+CSRSF=1,1,1,1,1,7 Aug 25 21:32:49 x230 rtkit-daemon[1879]: Successfully made thread 17091 of process 14713 (n/a) owned by '1000' RT at priority 5. Aug 25 21:32:49 x230 rtkit-daemon[1879]: Supervising 4 threads of 1 processes of 1 users. Aug 25 21:32:50 x230 kernel: [ 4860.627585] input: 00:1E:7C:01:73:E1 as /devices/virtual/input/input17 When switching from A2DP (standard profile) to HSP/HFP: Aug 25 21:34:36 x230 bluetoothd[735]: /org/bluez/735/hci0/dev_00_1E_7C_01_73_E1/fd3: fd(34) ready Aug 25 21:34:36 x230 rtkit-daemon[1879]: Successfully made thread 17309 of process 14713 (n/a) owned by '1000' RT at priority 5. Aug 25 21:34:36 x230 rtkit-daemon[1879]: Supervising 4 threads of 1 processes of 1 users. Aug 25 21:34:41 x230 bluetoothd[735]: Audio connection got disconnected Any hints how to get HSP/HFP working here?

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• Ubuntu server very slow out of the blue sky (Rails, passenger, nginx)

  - by snitko

  I run Ubuntu server 8.04 on Linode with multiple Rails apps under Passenger + nginx. Today I've noticed it takes quite a lot of time to load a page (5-10 secs). And it's not only websites, ssh seems to be affected too. Having no clue why this may be happening, I started to check different things. I checked how the log files are rotated, I checked if there's enough free disk space and memory. I also checked IO rate, here's the output: $ iostat avg-cpu: %user %nice %system %iowait %steal %idle 0.17 0.00 0.02 0.57 0.16 99.07 Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn xvda 2.25 39.50 16.08 147042 59856 xvdb 0.00 0.05 0.00 192 0 xvdc 2.20 25.93 24.93 96530 92808 xvdd 0.01 0.12 0.00 434 16 xvde 0.04 0.23 0.35 858 1304 xvdf 0.37 0.31 4.12 1162 15352 Rebooting didn't help either. Any ideas where should I be looking?

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• OSX Server 3, Mac clients binding to OD and Profile Manager failing

  - by dbf

  I've made a setup containing a Mac Mini with OSX Server 3 (Mavericks 10.9.2) using Open Directory and Profile Manager (Mail, etc all set up and working). Now the thing is, internally on the local network, everything works great. Clients can bind to the OD and the users are able to login. I can install trust and settings profiles (either custom or group profiles) and all services in the profiles mentioned are being configured correctly. I can log in and out, hump around and do it a 100 times on different macs with different users, it works. My goal is to make this service publicly. The domain is with a FQDN which I own, for simplicity let's say server.domain.com. Now the only way for me to bind the clients to the OD is using LDAP mapping RCF2307 (without SSL) and a DN suffix of dc=server,dc=domain,dc=com using the Directory Utility. The options from server, or open directory will throw several errors like Connection failed to node '/LDAPv3/server.domain.com (2100). First of all I don't really understand the problem why clients can't bind to the OD like it does locally, with and without SSL (all ports are open, literally all ports are open, not just 389,636 and 1640, wasn't sure if I was missing any). When the clients are using LDAP mapping RFC2307 to bind (without SSL only), clients are able to authenticate, login and even load the Trust profile. But every Settings profile will fail with a Debug Message: Unable to find GUID in user record OD or fail to install saying missing user identification. Is there any way to get this to work without RFC2307? Because there is quite some stuff missing when using RFC2307 and not pull the mapping from the server or use open directory. Is this setup even possible? Or should I use VPN to authenticate with the OD? The network setup is a Modem/Router (DHCP off) with WAN NATted to an Airport Extreme (Using DHCP+NAT). The AE does notify with a double NAT message but I haven't had any problems with it on any other service. So WAN - 192.168.2.220 (static), AE - 10.0.1.* (dhcp) Output of DIG from the outside using dig server.domain.com ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;server.domain.com. IN A ;; ANSWER SECTION: server.domain.com. 77 IN A 91.50.*.* (valid WAN IP) ;; SERVER 172.*.*.1#53(172.*.*.1) (iPhone) DIG locally from a client and server (same output) ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 0 ;; QUESTION SECTION: ;server.domain.com. IN A ;; ANSWER SECTION: server.domain.com. 10800 IN A 10.0.1.11 ;; AUTHORITY SECTION: server.domain.com. 10800 IN NS domain.com. (used for email send in relay) server.domain.com. 10800 IN NS server.domain.com. ;; SERVER 10.0.1.11#53(10.0.1.11) Are there any things I should check? Only have OSX. -- double NAT issue, plugged in the server directly on the Modem/Router with a static IP and issue remains. Guess that rules out the double NAT thing. -- changeip -checkhostname comes with There is nothing to change, e.g. success. Primary address = 10.0.1.11 Current HostName = server.domain.com DNS HostName = server.domain.com For now, I've made a workaround by using an admin account that forces a permanent VPN connection on boot. That means before it comes to the login, a connection is already made or underway. I will continue this post when I have more time, also locating all the necessary .log files of each application involved. I have some suspicions but have to debug a bit more when I have more time on my hands .. Unless, of course, I get sidetracked with having a life. Which is arguably not very likely. krypted.com

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• Running Mac OS X 10.6 my users home directory is wrong

  - by Erik Miller

  Somehow my home directory on my Mac has been changed and I'm not sure how to go about changing it back, I'm more of a linux guy and Mac OS X has some other mechanism for storing that information. Basically when I log into the machine normally than start a terminal window. I start in the /Users/erik_miller directory, which is my home directory, but when I run some this like cd ~ The machine tries to change to /Users/erik_miller. Yes, the same path with a period on the end. I can change my $HOME environment variable for the session, but the next time I start the machine it reverts. So, I think if I can find where that information is stored I can just change it there and hopefully all will be well.

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• DNS Propagation Investigation Techniques?

  - by darkAsPitch

  So I changed the nameservers to veeter.com about 5 days ago now - and the domain is still not resolving over the net. It does intermittently, but then cuts out again every few hours. I run 10+ other domains through the same dedicated server (running CentOS/WHM) and they are all up - so it has nothing to do with that. I have asked my dedicated server support staff what the problem might be, they told me to "log into WHM and click on 'Add a DNS Zone' under the 'DNS Functions' section on the left hand side of the screen. Once you have done this and dns fully propagates it should resolve any intermittent dns issues you may be experiencing." BUT there is already a DNS zone in place for the domain on my server - so what should I do

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• Use linefeed or carriage return in Subversion commit message from the command line

  - by Scott

  I am using Subversion 1.6.6 on Ubuntu 10.04. I would like to insert a carriage return, or linefeed, or newline into my commit message so that when reading the log, the comments are formatted appropriately. It works fine when I use the system editor, or specify a file for the commit comment, but what I really want is to be able to do something like the following: svn ci -m "This is the first line\nThis is the second line" and have the comment presented as: This is the first line This is the second line My example does not work, it produces output: This is the first line\nThis is the second line So, is there a way to do this? If so, how?

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• DNS NAmeserver Aname and cname records [closed]

  - by David

  I am inexperienced in the configuration of DNS and have an issue with dominan hosting set up. I have two domains 'www.mydomain1.com' and 'www.mydomain2.com', with mydomain2 pointed at the same place as mydomain1. The domains were passed to me recently by the person who previoulsy controlled them. I have an account with Fasthosts in the UK. When I accepted the domains I could not access the DNS settings and inquired with fasthosts as to why. The reply was: The delegate hosting option for both domains were enabled and this is the reason why you were unable to find the option to edit the advanced DNS records. I have now disabled the delegate hosting option so you can now edit the advanced DNS records for both domains in your account. When I log into the Fasthost control panel now I can access the DNS controls but both domains have no A record or Cname record set up. I am concerned that Fasthosts have blatted the previous Nameserver entries and set me up on theirs but not added any record. 'www.mydomain1.com' currently still works but 'www.mydomain2.com' does not find the site anymore. I am worried I will lose mydomain1 to as the DNS changes filter through the system. my webhosting is at 'xxx.xxx.xxx.xxx/mydomain1.com/' and this is where I want both domains to point. Any advice would be much appreciated. One thing which is confusing me is that because I am on a shared server I have to put 'xxx.xxx.xxx.xxx/mydomain1.com/' to get to my site rather than just 'xxx.xxx.xxx.xxx'. The form on Fasthosts for the A name record only allows an IP to be entered - does it add the mydomain1.com/ onto the end itself? Thanks for any help given - I'm quite worried about this David

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• Backup VSS Issues

  - by MJ

  I've got this server, and we've been having VSS issues for quite awhile. We've tried every form of re-registering the VSS drivers we can think of. NTbackup won't run a system state backup vssadmin list writers doesn't list anything. We're getting VSS error 12302 in the event log. Has anyone ran into a situation like this before? We're thinking the next step, if possible, is a complete reinstall of the VSS. Any other ideas?

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• How to Set Ubuntu 12.04 to it's factory settings like when u first installed it?

  - by Cameron

  Well, this is a simple answered question, from the title, but my real problem is hard af. I have set ubuntu to use root, then it wouldn't let me log into the admin account only root and guest I deleted the admin account, remade another, then attempted to disable root account. This failed - I messed up the password, the original password was "root" I also didn't set a password for my new admin account, so It says it has one, whats the default password for it? I can't moderate my ubuntu system at all now. I have tried to drop to cmd shell thing, it asks for the root password, i type 'root' and any other possible passwords, it doesn't work. To reset ubuntu to factory settings i have found that i could enter the following code: sudo dpkg-reconfigure -phigh -a sudo Requires admin password, that I cant find out without root password and I don;t know. My goal is to try to fix this without remaking a bootable usb for ubuntu, because I lost the one i made for this. so If i can't, please say so. If you can help thanks!

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• Strategy to allow emergency access to colocation crew

  - by itsadok

  I'm setting up a server at a new colocation center half way around the world. They installed the OS for me and sent me the root password, so there's obviously a great amount of trust in them. However, I'm pretty sure I don't want them to have my root password on a regular basis. And anyway, I intend to only allow key-based login. On some cases, though, it might be useful to let their technical support log in through a physical terminal. For example, if I somehow mess up the firewall settings. Should I even bother worrying about that? Should I set up a sudoer account with a one-time password that will change if I ever use it? Is there a common strategy for handling something like this?

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• Reverse lookup SERVFAIL

  - by Quan Tran

  I just set up a DNS server and a web server using Virtualbox. The IP address of the DNS server is 192.168.56.101 and the web server 192.168.56.102. Here are my configuration files for the DNS server: named.conf: // // named.conf // // Provided by Red Hat bind package to configure the ISC BIND named(8) DNS // server as a caching only nameserver (as a localhost DNS resolver only). // // See /usr/share/doc/bind*/sample/ for example named configuration files. // options { directory "/var/named"; dump-file "/var/named/data/cache_dump.db"; statistics-file "/var/named/data/named_stats.txt"; memstatistics-file "/var/named/data/named_mem_stats.txt"; //query-source address * port 53; //forward first; forwarders { 8.8.8.8; 8.8.4.4; }; listen-on port 53 { 127.0.0.1; 192.168.56.0/24; }; allow-query { localhost; 192.168.56.0/24; }; recursion yes; dnssec-enable yes; dnssec-validation yes; dnssec-lookaside auto; /* Path to ISC DLV key */ bindkeys-file "/etc/named.iscdlv.key"; managed-keys-directory "/var/named/dynamic"; }; logging { channel default_debug { file "data/named.run"; severity debug 10; print-category yes; print-time yes; print-severity yes; }; }; zone "quantran.com" in { type master; file "named.quantran.com"; }; zone "56.168.192.in-addr.arpa" in { type master; file "named.192.168.56"; allow-update { none; }; }; include "/etc/named.rfc1912.zones"; include "/etc/named.root.key"; named.quantran.com: $TTL 86400 quantran.com. IN SOA dns1.quantran.com. root.quantran.com. ( 100 ; serial 3600 ; refresh 600 ; retry 604800 ; expire 86400 ) IN NS dns1.quantran.com. dns1.quantran.com. IN A 192.168.56.101 www.quantran.com. IN A 192.168.56.102 named.192.168.56: $TTL 86400 $ORIGIN 56.168.192.in-addr.arpa. @ IN SOA dns1.quantran.com. root.quantran.com. ( 100 ; serial 3600 ; refresh 600 ; retry 604800 ; expire 86400 ) ; minimum IN NS dns1.quantran.com. 101.56.168.192.in-addr.arpa. IN PTR dns1.quantran.com. 102 IN PTR www.quantran.com. When I try a normal lookup from the host (I configured so that the only nameserver the host uses is the DNS server 192.168.56.101): quan@quantran:~$ host www.quantran.com www.quantran.com has address 192.168.56.102 quan@quantran:~$ host dns1.quantran.com dns1.quantran.com has address 192.168.56.101 But when I try a reverse lookup: quan@quantran:~$ host -v 192.168.56.101 192.168.56.101 Trying "101.56.168.192.in-addr.arpa" Using domain server: Name: 192.168.56.101 Address: 192.168.56.101#53 Aliases: Host 101.56.168.192.in-addr.arpa not found: 2(SERVFAIL) Received 45 bytes from 192.168.56.101#53 in 0 ms quan@quantran:~$ host -v 192.168.56.102 192.168.56.101 Trying "102.56.168.192.in-addr.arpa" Using domain server: Name: 192.168.56.101 Address: 192.168.56.101#53 Aliases: Host 102.56.168.192.in-addr.arpa not found: 2(SERVFAIL) Received 45 bytes from 192.168.56.101#53 in 0 ms So why can't I perform a reverse lookup? Anything wrong with the zone configuration files? Thanks in advance :) Oh, here is the output from the log file /var/named/data/named.run when I perform the reverse lookup: quan@quantran:~$ host 192.168.56.102 192.168.56.101 Using domain server: Name: 192.168.56.101 Address: 192.168.56.101#53 Aliases: Host 102.56.168.192.in-addr.arpa not found: 2(SERVFAIL) /var/named/data/named.run: 02-Jun-2014 15:18:11.950 client: debug 3: client 192.168.56.1#51786: UDP request 02-Jun-2014 15:18:11.950 client: debug 5: client 192.168.56.1#51786: using view '_default' 02-Jun-2014 15:18:11.950 security: debug 3: client 192.168.56.1#51786: request is not signed 02-Jun-2014 15:18:11.950 security: debug 3: client 192.168.56.1#51786: recursion available 02-Jun-2014 15:18:11.950 client: debug 3: client 192.168.56.1#51786: query 02-Jun-2014 15:18:11.950 client: debug 10: client 192.168.56.1#51786: ns_client_attach: ref = 1 02-Jun-2014 15:18:11.950 query-errors: debug 1: client 192.168.56.1#51786: query failed (SERVFAIL) for 102.56.168.192.in-addr.arpa/IN/PTR at query.c:5428 02-Jun-2014 15:18:11.950 client: debug 3: client 192.168.56.1#51786: error 02-Jun-2014 15:18:11.950 client: debug 3: client 192.168.56.1#51786: send 02-Jun-2014 15:18:11.950 client: debug 3: client 192.168.56.1#51786: sendto 02-Jun-2014 15:18:11.951 client: debug 3: client 192.168.56.1#51786: senddone 02-Jun-2014 15:18:11.951 client: debug 3: client 192.168.56.1#51786: next 02-Jun-2014 15:18:11.951 client: debug 10: client 192.168.56.1#51786: ns_client_detach: ref = 0 02-Jun-2014 15:18:11.951 client: debug 3: client 192.168.56.1#51786: endrequest 02-Jun-2014 15:18:11.951 client: debug 3: client @0xb537e008: udprecv Also, I made some changes to the log section in named.conf.

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• Unable to restart MySQL server on CENTOS 6.5 x86_64 kvm – server (WHM/cPanel)

  - by Kevin S

  I am not able to restart MySQL server on CENTOS 6.5 x86_64 kvm – server (WHM/cPanel). I am getting following error while trying to restart the MySQL server. Waiting for mysql to restart...............finished. mysqld_safe (/bin/sh /usr/bin/mysqld_safe --datadir=/var/lib/mysql --pid-file=/var/lib/mysql/server.domain.net.pid) running as root with PID 4227 (process table check method) mysqld (/usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --log-error=/var/lib/mysql/server.domain.net.err --open-files-limit=4096 --pid-file=/var/lib/mysql/server.domain.net.pid) running as mysql with PID 4349 (pidfile check method) mysql has failed, please contact the sysadmin (result was "mysql is not running"). I even restarted the server and tried again but same issue.

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• My profile won't load!

  - by blsub6

  I can get into my Windows Server 2008 R2 primary domain controller via remote desktop just fine. It's my boss who's got his profile messed up. When he tries to log in, he gets the message The User Profile service failed the logon. User profile cannot be loaded. I've looked for his profile everywhere and cannot find it to delete or fix it. System Properties Advanced User Profiles shows my profile, the Administrator profile and the Default Profile. HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList only shows my profile and the Administrator profile. Everything that I've found on the internets points me to those locations. Help a brotha out?

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• Can I recover a nano process from a previous terminal?

  - by davidparks21

  My system crashed while I was in a nano session with unsaved changes. When I log back in via SSH I see the nano process still running when I do a ps. davidparks21@devdb1:/opt/frugg_batch$ ps -ef | grep nano 1001 31714 29481 0 18:32 pts/0 00:00:00 nano frugg_batch_processing 1001 31905 31759 0 19:16 pts/1 00:00:00 grep --color=auto nano davidparks21@devdb1:/opt/frugg_batch$ Is there a way I can bring the nano process back under my control in the new terminal? Or any way to force it to save remotely (from my new terminal)?

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• Automate proftpd-basic install on ubuntu using apt-get

  - by Bryan

  I'm trying to build a shell script to automate the installation of several packages onto an Ubuntu 10.04 server, and I'm having problems with proftpd-basic. I'm using the command line apt-get -qy install proftpd-basic >/tmp/install.log For most packages, this approach would work fine, however proftpd-basic appears to require some interaction (it asks whether to perform an inetd or standalone installation). Is it possible for me to pre-select this option on the command line somehow, as I don't want the user to be bothered by this question? - For info, if it matters, I want to choose the 'standalone' option.

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• Single sign-on for SharePoint to MySite?

  - by Chris W

  I've got a fairly simple SharePoint 2010 farm set up: 2 WFE servers with Network Load Balancing hosting the main portal site. As per Microsoft's best practice recommendations I've set up My Sites in a separate web application. As some of the user base are not using domain joined PCs they have to login once for the portal (http://portal) and then again when the access My Sites since they're crossing in to a separate web application on a separate host (http://mysite). Portal & MySite are both hosted on the same physical WFE servers. Is there an easy way to set up some thing to stop this happening and just have them login once? I understand that there's plans for us to deploy ISA in the not too distant future - could we use ISA to manage authentication to the two sites so that the users only need to log in once?

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• Can't communicate with Primary DNS Server

  - by horsley

  A computer, with Windows 7, can't access any website by domain suddenly. Whether this computer use a wired link or connect to the WLAN, The fault persists IP and DNS obtained automatically, and seems normal (ipconfig /all return the correct info) I can visit websites by using HTTP proxy The DNS server is available, other computer in my room works properly. I can ping myself, the gateway and any other IP, but domains I can use nslookup and obtain the correct IP info There are some error information in the event log about dns client events explaining the client can not verify the DNS server available Windows network diagnosis explain that Windows can't communicate with the device or resource (Primary DNS Server) I guess the dns client should be blame. I tried to do the following things but the fault persist. Reinstall the driver of network adapter Reset TCP/IP (netsh int ip reset) Reset Winsock (netsh winsock reset) Reset LSP I don't want to reinstall the whole os, what should I do?

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• apache and ajp performance

  - by user12145

  I have an apache sitting in front of two tomcat app servers(one on the same physical server, the other on a different one) that does time consuming work(0.5 sec to 10sec per request). The apache http server is getting killed by an average of 1 to 2 concurrent requests per second. both Server spec is about 2GB of RAM. Is there a way to optimize apache to handle the load? any advise is welcome. BalancerMember ajp://localhost:8009/whoisserver BalancerMember ajp://XXX.XX.XXX.XX:8009/whoisserver I keep getting the following in apache2.2 log: [Mon Dec 28 00:31:02 2009] [error] ajp_read_header: ajp_ilink_receive failed [Mon Dec 28 00:31:02 2009] [error] (120006)APR does not understand this error code: proxy: read response failed from 127.0.0.1:8009 (localhost)

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• How to redirect (or Alias) jump page with Apache

  - by Meltemi

  I'm not an Apache expert but need to make a small change to a web server. We are introducing a "jump page" URL that is different from a primary URL (for tracking reasons). /productA/index.html /productA/jump_index.html Basically i want to log that jump_index.html was requested and then return index.html. I don't want the client to wait 8 seconds or so for a redirect. How should we be handling this? Simply symlink (or alias) the file in the filesystem? Use mod_alias Alias Match (if so how exactly)? something better still?

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• RewriteCond in .htaccess file gives me bad flag delimiters

  - by Steven

  I'm upgrading a website and I use this .htaccess file to show maintenance page: #MAINTENANCE-PAGE REDIRECT RewriteEngine on RewriteCond %{REMOTE_ADDR} !^127\.0\.0\.0 # Bogus IP address for posting here RewriteCond %{REMOTE_ADDR} !^127\.0\.0\.0 # Bogus IP address for posting here RewriteCond %{REQUEST_URI} !^/maintenance\.html$ RewriteRule ^(.*)$ http://www.mysite.no/maintenance.html [R=307,L] This opens the maintenance page for all users except the two IP addresses I've added. They get an Internal Server Error. I've used thesame script on another site, and that worked fine. Looking at the error log, I see the following: /var/www/vhosts/mysite.no/httpdocs/.htaccess: RewriteCond: bad flag delimiters If I remove my .htaccess file, I can work with my site just fine. My site is hosted on a VPN using CentOS 5. How can I fix this problem?

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• Internet cafe software for linux

  - by pehrs

  I have gotten a request to roll out a total of 8 internet cafe's in a large network. Budget is non-existent as it will all be done for a non-profit. I was planing to use Ubuntu and live-cds to minimize the amount of management required, but I can't seem to find any suitable internet cafe system that is Ubuntu based. The requirements are pretty basic: It needs to keep track of logged in time and log out users when their time it up. No billing will be done, it will just be used to ensure people can share the computers fairly. It should be possible to force logout from a central system. Users will be unskilled, so it has to have a GUI. What (preferably free, considering the shoe-string budget) software would you suggest to manage this?

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• Postfix smtp error 450 (failed to add recipient)

  - by culter

  I have debian server with postfix and roundcube. After an attack we are on 2 blacklists, but I don't think that this is the main problem. I can't send mail to any address. I tried to find the cause...I checked var/spool/postfix/etc/resolv.conf and resolv.etc and they're the same with this content: nameserver 127.0.0.1 nameserver localhost In var/log/mail.err I found: cyrus/imap[25452]: DBERROR: opening /var/lib/cyrus/user/m/[email protected]: cyrusdb error cyrus/imap[25452]: DBERROR: skiplist recovery /var/lib/cyrus/user/m/[email protected]: ADD at 1FC0 exists When I try to send email from roundcube, I get the message from title. When I send it within opera or any other mail client, It gives nothing, but email is'nt sended. Thank you for any advice.

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• Database checksum features - redundant? useful?

  - by Eloff

  Just about every mainstream DB has a feature to calculate checksums per page, per sector, or per record. Now for a DB that does full recover after any crash, like PostgreSQL, is a checksum even useful? There will be no data loss as long as the xlog is ok, no matter what kind of corruption happened to the data itself, as the redo log is replayed every committed transaction will be restored. So checksums are useless on restore. Doesn't the filesystem or disk keep checksums anyway to detect corruption? So unless the checksum is per record, all it does is tell you there is corruption - which the OS should be yelling at you the minute you try to read it - so useless in operation? I can't imagine how a checksum can be helpful in any sane database - but since they all use them - I'd say that's just failure of imagination on my part. So how is it useful?

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• how to make run cron on OSX 10.6.2?

  - by Radek

  Note: this question is not about how to edit cron tab but how to make cron work I edited my cron using env EDITOR=joe crontab -e I entered 1 * * * * echo 'test' > /Users/radek/Backup/rationalvmware/test.txt and it does nothing although the cron is set up correctly. Checked via Cronnix and viewed the cron in /var/cron/tabs. Editing crontab using Cronnix gives me the same results. If I run echo 'test' > /Users/radek/Backup/rationalvmware/test.txt manually it creates a files as expected so I assume that the command I provide to cron is correct one. Is there anything special I have to do to make cron work on OSX? How can I check it the the cron is running. What's the equivalent of /var/log/messages on OSX? I can see in messages on SuSE that cron works.

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• Winlogon.exe causes C++ runtime error

  - by Evan

  Recently I've become unable to log into my Dell Precision M2400. It uses the Dell Controlpoint login GUI instead of the typical windows one, and has now started giving me a runtime error on winlogon.exe that ends with a c000021a BSOD. I have tried running through safe mode and a restore to the last known good setting with no success. Unfortunately by BIOS password is locked and the one IT guy with the password is on vacation and unreachable until after I leave for a business trip. Is there anyway to bypass the Dell logon screen and get to the default windows one? Thanks.

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