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• How to configure catch-all in Exchange2010 hub-transport environment?

  - by Itay Levin

  Im getting the delivery failed from the post master reply. i don't want it. because then poeple can find out all my real users on the exchange. also, i have a lot of users (10K) in my application - and i don't want to create a mailbox for each user. is it possible to get this done in ex2010 sp1. hub-transport configuration? or i must use edge-transport as indicated in http://technet.microsoft.com/en-us/library/bb691132(EXCHG.80).aspx

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• Real time mirroring between two sql server databases

  - by Matt Thrower

  Hi, I'm a c# programmer, not a DBA and I've had the (mis)fortune to be handed a database admin task. So please bear this in mind when answering this question. What I've been asked to do is to create a real time two-way mirror between two databases with a 10 Megabit connection between them. So when either changes it updates the other. This is not a standard data mirroring/failover task where one DB is the master and the other is a backup - both are live and each needs to instantly reflect changes made to the other. In my head this sounds like a tall order, one which may even be impossible - after all in a rapidly changing environment with lots of users this is going to be massively resource intensive and create locks and queues of jobs all over the place. Is it possible? If so, can anyone either give me some basic instructions and/or point me at some places to start my reading and research? Cheers, Matt

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• post-receive hook permission denied "unable to create file" error

  - by ThomasReggi

  Just got gitolite installed on my webserver and am trying to get a post-receive hook that can point the git dir in apache's direction. This is what my post-receive hook looks like. Got this script from the Using Git to manage a web site. #!/bin/sh echo "post-receive example.com triggered" GIT_WORK_TREE=/srv/sites/example.com/public git checkout -f This is the error response i'm getting back from git push origin master from my local workstation. These are files from within my repository. remote: post-receive example.com triggered remote: error: unable to create file .htaccess (Permission denied) remote: error: unable to create file .tm_sync.config (Permission denied) remote: fatal: cannot create directory at 'application': Permission denied Permissions of public. drwxr-xr-x 5 root root 4096 Jun 26 17:23 public

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• How to configure bind9 to route to host's IP

  - by Greg

  I'm running apache and bind9 on the same server. I would like to set a master zone to route back to this very machine's IP address without explicitly specifying it. Is this possible? If I use 127.0.0.1 for the A record, then when another computer on the network does an nslookup for mydomain.local, bind of course just returns the loopback ip (127.0.0.1) -- not the IP of the server. Is there to way to tell it to just return the network IP address for the server itself, as defined in /etc/network/interfaces?

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• Slave/secondary DNS nameserver

  - by user114671

  I'm learning about DNS and have a very basic, generic question about DNS but I can't find an answer anywhere. I have DNS for a few domains set up as follows: - master records with DNS company A - slave records with DNS company B Company A's nameservers are: ns1.companyA.com. ns2.companyA.com. ns3.companyA.com. ns4.companyA.com. ns5.companyA.com. and company B has three slaves: ns6.companyB.com. ns7.companyB.com. ns8.companyB.com. Everything works fine transferring the records between the nameservers and keeping them in sync. But my question is: The registrar of my domain example.com allows me to choose 4 nameservers only. Do I just pick the first 4 for company A, or do I need to include 1 or more of company B's slave nameservers too?

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• Is there a server distro with the capability of syncing live data to multiple machines?

  - by Adam Hart

  Scenario: I have a main server that is used for pagebuilding/storing master data, and is accessed by a few clients on site. This company also has multiple branches with their own server that that connect to locally, but need to work with all the same data, and have it synchronized across all servers in real (or close) time. Is there a way/specific server OS that can sync live data across all of these servers? These servers would also need to be able to: Configure AFP, FTP, CIFS, SMB Continue to host their web server and database server in a Microsoft environment, but move the file server off to commodity hardware Just wondering if this is even possible.

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• How to get the Three.js import/export scripts into Blender on Ubuntu?

  - by Bane

  I have been working with 3D primitives in Three.js, but now I want to import some models. I plan on using Blender, which I have just downloaded with: sudo apt-get install blender However, I was instructed to put the import/export scripts in the .blender/2.62/scripts/addons folder, but it does not exist! .blender/2.62 does exist, but it only has a config folder. The next thing I did is manually changed the script search path in Blender's preferences from // to my homefolder/scripts, which contained the required io_mesh_threejs folder (which, in turn had the .py scripts inside). I saved the changes, restarted Blender, but still nothing: in the menu there is no mention of Three.js at all! What do I do? It would be great if I knew the installation path for Blender, because maybe I could put those scripts there manually. Where should it be installed? EDIT: these are the scripts I'm talking about, along with the instructions: https://github.com/mrdoob/three.js/tree/master/utils/exporters/blender.

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• Computer cannot detect hard disk

  - by Nrew

  Details: BIOS: AMI Bios, set primary master to Auto OS: Windows XP Sp2 Memory: 384 Mb Processor: Pentium 3 yeah this one is really very old. And some of the capacitors in the motherboard are already bulging. It detected the hdd yesterday when were trying to fix it and install xp. But today it cannot boot and said: Boot failure. What can you suggest that I would do to revive this old machine. What would be the problem, is it the hdd, the ide cable or the motherboard.

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• Clever recording using AVFoundation

  - by martin

  Hello I am working on my master thesis and I am programming app for iOS using AVFoundation framework. I can make by myself session and attach devices to it and record video with sound. The main problem is that I need continous recording (3hours or longer). After three hours user will stop recording and user will choose time eg. 15 mins (max 30 mins) and only this last 15 mins will be stored to iphone memory. Is it possible to 'cut' video while recording or should I record it eg. in 10 minutes block and then delete old video segments and last two segments connect to one bigger? Will perform these connections (stop recording, start new recording and then connect these two segments) lags in final long video segment? Is there any way to perform this 'clever' recording? Thank you for any ideas.

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• SQL server peformance, virtual memory usage

  - by user45641

  Hello, I have a very large DB used mostly for analytics. The performance overall is very sluggish. I just noticed that when running the query below, the amount of virtual memory used greatly exceeds the amount of physical memory available. Currently, physical memory is 10GB (10238 MB) whereas the virtual memory returns significantly more - 8388607 MB. That seems really wrong, but I'm at a bit of a loss on how to proceed. USE [master]; GO select cpu_count , hyperthread_ratio , physical_memory_in_bytes / 1048576 as 'mem_MB' , virtual_memory_in_bytes / 1048576 as 'virtual_mem_MB' , max_workers_count , os_error_mode , os_priority_class from sys.dm_os_sys_info

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• Correct password for ssh key rejected when ssh-d into machine

  - by user20342

  When I am logged into my machine directly, I can do all git operations, and when prompted for a password, the password is accepted. When I ssh into the same box and run git operations on the same repos, the password is rejected. Relevant section of .ssh/config looks like this: # Generic settings Host * ServerAliveInterval 600 ControlPath /tmp/ssh-%r@%h:%p ControlMaster auto KeepAlive yes IdentityFile ~/.ssh/id_rsa.pub Transaction looks like this when I login when I ssh into my box: {12-12-03 9:41}hbrown-wks2:~/workspace/spt/project@master??? hbrown% git pull Enter passphrase for key '/home/hbrown/.ssh/id_rsa.pub': Enter passphrase for key '/home/hbrown/.ssh/id_rsa.pub': Enter passphrase for key '/home/hbrown/.ssh/id_rsa.pub': Permission denied (publickey). fatal: Could not read from remote repository. Please make sure you have the correct access rights and the repository exists. Using bash does not appear to make a difference (i.e. ssh-agent /bin/bash). This is a recent development, but I can't cite the change that caused it.

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• Exchange Server Contact Categories - How to Remove/Update All

  - by ben

  I've been tasked with cleaning up our companies contact database sitting on our Exchange Server 2003. The rub is this database of contacts has been neglected for the past couple of years and is now a bit messy. My issue is I have say a person named 'Bob Smith', and Bob is listed in multiple categories, 'Students' and 'Student'. I would really like to remove the 'Student' category from Bob and anyone else out there that has the same category. My question is, is there an easy way to edit the master category lists for contacts on the exchange server? I feel like I am missing something simple here since if I were playing with the categories that I use, to say organize email its very easy to do so, but I can't seem to find the proper way to do it for categories that are up on the server. I'm attempting to work through Outlook 2007 and Exchange 2003. Any insight would be very helpful as I really don't want to change 8000+ contacts by hand.

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• Virtualmin Configuration

  - by Allen

  I am trying to get Virtualmin setup and have reached a point where my noobish sysadmin skills aren't getting the job done. This is the message I get now when I try and refresh the configuration of Virtualmin. BIND DNS server is installed, and the system is configured to use it. However, the default master DNS server XXXXXX is not a fully qualified domain name. Sendmail is only accepting SMTP connections on the following ports : 127.0.0.1 port smtp. Email from other systems on the Internet will not be accepted. This can be changed in the Sendmail Mail Server module. Please advise what I need to do to get Sendmail configured properly. Thanks!

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• SVN Server not responding

  - by Rob Forrest

  I've been bashing my head against a wall with this one all day and I would greatly appreciate a few more eyes on the problem at hand. We have an in-house SVN Server that contains all live and development code for our website. Our live server can connect to this and get updates from the repository. This was all working fine until we migrated the SVN Server from a physical machine to a vSphere VM. Now, for some reason that continues to fathom me, we can no longer connect to the SVN Server. The SVN Server runs CentOS 6.2, Apache and SVN 1.7.2. SELinux is well and trully disabled and the problem remains when iptables is stopped. Our production server does run an older version of CentOS and SVN but the same system worked previously so I don't think that this is the issue. Of note, if I have iptables enabled, using service iptables status, I can see a single packet coming in and being accepted but the production server simply hangs on any svn command. If I give up waiting and do a CTRL-C to break the process I get a "could not connect to server". To me it appears to be something to do with the SVN Server rejecting external connections but I have no idea how this would happen. Any thoughts on what I can try from here? Thanks, Rob Edit: Network topology Production server sits externally to our in-house SVN server. Our IPCop (?) firewall allows connections from it (and it alone) on port 80 and passes the connection to the SVN Server. The hardware is all pretty decent and I don't doubt that its doing its job correctly, especially as iptables is seeing the new connections. subversion.conf (in /etc/httpd/conf.d) LoadModule dav_svn_module modules/mod_dav_svn.so <Location /repos> DAV svn SVNPath /var/svn/repos <LimitExcept PROPFIND OPTIONS REPORT> AuthType Basic AuthName "SVN Server" AuthUserFile /var/svn/svn-auth Require valid-user </LimitExcept> </Location> ifconfig eth0 Link encap:Ethernet HWaddr 00:0C:29:5F:C8:3A inet addr:172.16.0.14 Bcast:172.16.0.255 Mask:255.255.255.0 inet6 addr: fe80::20c:29ff:fe5f:c83a/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:32317 errors:0 dropped:0 overruns:0 frame:0 TX packets:632 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:2544036 (2.4 MiB) TX bytes:143207 (139.8 KiB) netstat -lntp Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN 1484/mysqld tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN 1135/rpcbind tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1351/sshd tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN 1230/cupsd tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 1575/master tcp 0 0 0.0.0.0:58401 0.0.0.0:* LISTEN 1153/rpc.statd tcp 0 0 0.0.0.0:5672 0.0.0.0:* LISTEN 1626/qpidd tcp 0 0 :::139 :::* LISTEN 1678/smbd tcp 0 0 :::111 :::* LISTEN 1135/rpcbind tcp 0 0 :::80 :::* LISTEN 1615/httpd tcp 0 0 :::22 :::* LISTEN 1351/sshd tcp 0 0 ::1:631 :::* LISTEN 1230/cupsd tcp 0 0 ::1:25 :::* LISTEN 1575/master tcp 0 0 :::445 :::* LISTEN 1678/smbd tcp 0 0 :::56799 :::* LISTEN 1153/rpc.statd iptables --list -v -n (when iptables is stopped) Chain INPUT (policy ACCEPT 0 packets, 0 bytes) pkts bytes target prot opt in out source destination Chain FORWARD (policy ACCEPT 0 packets, 0 bytes) pkts bytes target prot opt in out source destination Chain OUTPUT (policy ACCEPT 0 packets, 0 bytes) pkts bytes target prot opt in out source destination iptables --list -v -n (when iptables is running, after one attempted svn connection) Chain INPUT (policy ACCEPT 68 packets, 6561 bytes) pkts bytes target prot opt in out source destination 19 1304 ACCEPT all -- * * 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED 0 0 ACCEPT icmp -- * * 0.0.0.0/0 0.0.0.0/0 0 0 ACCEPT all -- lo * 0.0.0.0/0 0.0.0.0/0 0 0 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:22 1 60 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:80 0 0 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:80 0 0 ACCEPT udp -- * * 0.0.0.0/0 0.0.0.0/0 state NEW udp dpt:80 Chain FORWARD (policy ACCEPT 0 packets, 0 bytes) pkts bytes target prot opt in out source destination Chain OUTPUT (policy ACCEPT 17 packets, 1612 bytes) pkts bytes target prot opt in out source destination tcpdump 17:08:18.455114 IP 'production server'.43255 > 'svn server'.local.http: Flags [S], seq 3200354543, win 5840, options [mss 1380,sackOK,TS val 2011458346 ecr 0,nop,wscale 7], length 0 17:08:18.455169 IP 'svn server'.local.http > 'production server'.43255: Flags [S.], seq 629885453, ack 3200354544, win 14480, options [mss 1460,sackOK,TS val 816478 ecr 2011449346,nop,wscale 7], length 0 17:08:19.655317 IP 'svn server'.local.http > 'production server'k.43255: Flags [S.], seq 629885453, ack 3200354544, win 14480, options [mss 1460,sackOK,TS val 817679 ecr 2011449346,nop,wscale 7], length 0

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• How to use Binary Log file for Auditing and Replicating in MySQL?

  - by Pranav

  How to use Binary Log file for Auditing in MySQL? I want to track the change in a DB using Binary Log so that I can replicate these changes to other DB please do not give me hyperlinks for MySQL website. please direct me to find the solution I have looked for auditing options and created a script using Triggers for that, but due toi the Joomla DB structure it did'nt worked for me, hence I have to move on to Binary Log file concept now i am stucked in initiating the concept as I am not getting the concept of making the server master/slave, so can any body guide me how to actually initiate it via PHP?

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• Puppet apache module causing 'Error 400 on SERVER: Invalid parameter identifier'

  - by Andy Shinn

  I am receiving the following error when trying to use the latest puppetlabs-apache module from github (https://github.com/puppetlabs/puppetlabs-apache): Error: Could not retrieve catalog from remote server: Error 400 on SERVER: Invalid parameter identifier at /etc/puppet/environments/apache_update/modules/apache/manifests/mod.pp:40 on node zordon.mydomain.com Warning: Not using cache on failed catalog Error: Could not retrieve catalog; skipping run My node config looks like: node 'zordon.mydomain.com' { include template::common include template::puppetagent include template::lamp User::Create sudo::conf { 'joe': priority = 60, content = 'joe ALL=(ALL) NOPASSWD: ALL', require = User::Create['joe'], } } The template::lamp class is what uses apache module: class template::lamp { include myfirewall Firewall Firewall class { 'apache': } class { 'apache::mod::php': } class { 'apache::mod::ssl': } class { 'mysql::server': } } It looks like serverfault markup is getting garbled on Puppet realize statements. The User::Create and Firewall lines are just realizing a user and 2 firewall rules. I have verified that the /var/lib/puppet/lib/puppet/type/a2mod.rb type has the identifier parameter and it is the same MD5 as the server. I am using Puppet 3.0.1 on both agent and master. Any idea what may cause this?

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• How to setup Database Permissions on SqlServer Express 2008

  - by Timo Willemsen

  I'm using a code-first approach of using the Entity Framework. When I first run the application it will try to create the database matching my MVC models. However, it doesn't have permission to create it I think. I get the following error: CREATE DATABASE permission denied in database 'master'. What user is trying to access the SqlServer and how can I add it's permissions to let it work? This is the connectionstring I'm using (which should be right...) <add name="ContextDb" connectionString="data source=.\SQLEXPRESS;Integrated Security=SSPI;initial catalog=ContextDb" providerName="System.Data.SqlClient"/> Cheers

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• are projects with high developer turn over rate really a bad thing?

  - by John

  I've inherited a lot of web projects that experienced high developer turn over rates. Sometimes these web projects are a horrible patchwork of band aid solutions. Other times they can be somewhat maintainable mozaics of half-done features each built with a different architectural style. Everytime I inherit these projects, I wish the previous developers could explain to me why things got so bad. What puzzles me is the reaction of the owners (either a manager, a middle man company, or a client). They seem to think, "Well, if you leave, I'll just find another developer." Or they think, "Oh, it costs that much money to refactor the system? I know another developer who can do it at half the price. I'll hire him if I can't afford you." I'm guessing that the high developer turn over rate is related to the owner's mentality of "If you think it's a bad idea to build this, I'll just find another (possibly cheaper) developer to do what I want". For the owners, the approach seems to work because their business is thriving. Unfortunately, it's no fun for the developers that go AWOL 3-4 months after working with poor code, strict timelines, and little feedback. So my question is the following: Are the following symptoms of a project really such a bad thing for business? high developer turn over rate poorly built technology - often a patchwork of different and inappropriately used architectural styles owners without a clear roadmap for their web project, and they request features on a whim I've seen numerous businesses prosper while experiencing the symptoms above. So as a programmer, even though my instincts tell me the above points are terrible, I'm forced to take a step back and ask, "are things really that bad in the grand scheme of things?" If not, I will re-evaluate my approach to these projects.

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• Nginx Restart Issues

  - by heavymark

  All of the sudden when restarting Nginx I get the following error: Restarting nginx: [alert]: could not open error log file: open() "/var/log/nginx/error.log" failed (13: Permission denied) 2011/02/16 17:20:58 [warn] 23925#0: the "user" directive makes sense only if the master process runs with super-user privileges, ignored in /etc/nginx/nginx.conf:1 the configuration file /etc/nginx/nginx.conf syntax is ok 2011/02/16 17:20:58 [emerg] 23925#0: open() "/var/run/nginx.pid" failed (13: Permission denied) configuration file /etc/nginx/nginx.conf test failed On the front end part of the site loads but some files such as the CSS in particular are not loading. They exist on the server but when loading the resources directly in Chrome they say "Oops this page can't be found." I set a special group and user to run my apache files using suexec for my domain files. I think the nginx are owned by root however which I'm assuming is the problem but which nginx file ownerships would I change?

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• Why do I get a segmentation fault while redirecting sys.stdout to Tkinter.Text widget in Python?

  - by Brent Nash

  I'm in the process of building a GUI-based application with Python/Tkinter that builds on top of the existing Python bdb module. In this application, I want to silence all stdout/stderr from the console and redirect it to my GUI. To accomplish this purpose, I've written a specialized Tkinter.Text object (code at the end of the post). The basic idea is that when something is written to sys.stdout, it shows up as a line in the "Text" with the color black. If something is written to sys.stderr, it shows up as a line in the "Text" with the color red. As soon as something is written, the Text always scrolls down to view the most recent line. I'm using Python 2.6.1 at the moment. On Mac OS X 10.5, this seems to work great. I have had zero problems with it. On RedHat Enterprise Linux 5, however, I pretty reliably get a segmentation fault during the run of a script. The segmentation fault doesn't always occur in the same place, but it pretty much always occurs. If I comment out the sys.stdout= and sys.stderr= lines from my code, the segmentation faults seem to go away. I'm sure there are other ways around this that I will probably have to resort to, but can anyone see anything I'm doing blatantly wrong here that could be causing these segmentation faults? It's driving me nuts. Thanks! PS - I realize redirecting sys.stderr to the GUI might not be a great idea, but I still get segmentation faults even when I only redirect sys.stdout and not sys.stderr. I also realize that I'm allowing the Text to grow indefinitely at the moment. class ConsoleText(tk.Text): '''A Tkinter Text widget that provides a scrolling display of console stderr and stdout.''' class IORedirector(object): '''A general class for redirecting I/O to this Text widget.''' def __init__(self,text_area): self.text_area = text_area class StdoutRedirector(IORedirector): '''A class for redirecting stdout to this Text widget.''' def write(self,str): self.text_area.write(str,False) class StderrRedirector(IORedirector): '''A class for redirecting stderr to this Text widget.''' def write(self,str): self.text_area.write(str,True) def __init__(self, master=None, cnf={}, **kw): '''See the __init__ for Tkinter.Text for most of this stuff.''' tk.Text.__init__(self, master, cnf, **kw) self.started = False self.write_lock = threading.Lock() self.tag_configure('STDOUT',background='white',foreground='black') self.tag_configure('STDERR',background='white',foreground='red') self.config(state=tk.DISABLED) def start(self): if self.started: return self.started = True self.original_stdout = sys.stdout self.original_stderr = sys.stderr stdout_redirector = ConsoleText.StdoutRedirector(self) stderr_redirector = ConsoleText.StderrRedirector(self) sys.stdout = stdout_redirector sys.stderr = stderr_redirector def stop(self): if not self.started: return self.started = False sys.stdout = self.original_stdout sys.stderr = self.original_stderr def write(self,val,is_stderr=False): #Fun Fact: The way Tkinter Text objects work is that if they're disabled, #you can't write into them AT ALL (via the GUI or programatically). Since we want them #disabled for the user, we have to set them to NORMAL (a.k.a. ENABLED), write to them, #then set their state back to DISABLED. self.write_lock.acquire() self.config(state=tk.NORMAL) self.insert('end',val,'STDERR' if is_stderr else 'STDOUT') self.see('end') self.config(state=tk.DISABLED) self.write_lock.release()

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• What is the the relation between programming and mathematics?

  - by Math Grad

  Programmers seem to think that their work is quite mathematical. I understand this when you try to optimize something in performance, find the most efficient alogithm, etc.. But it patently seems false when you look at a billing application for a shop, or a systems software riddled with I/O calls. So what is it exactly? Is computation and associated programming really mathematical? Here I have in mind particularly the words of the philosopher Schopenhauer in mind: That arithmetic is the basest of all mental activities is proved by the fact that it is the only one that can be accomplished by means of a machine. Take, for instance, the reckoning machines that are so commonly used in England at the present time, and solely for the sake of convenience. But all analysis finitorum et infinitorum is fundamentally based on calculation. Therefore we may gauge the “profound sense of the mathematician,” of whom Lichtenberg has made fun, in that he says: “These so-called professors of mathematics have taken advantage of the ingenuousness of other people, have attained the credit of possessing profound sense, which strongly resembles the theologians’ profound sense of their own holiness.” I lifted the above quote from here. It seems that programmers are doing precisely the sort of mechanized base mental activity the grand old man is contemptuous about. So what exactly is the deal? Is programming really the "good" kind of mathematics, or just the baser type, or altogether something else just meant for business not to be confused with a pure discipline?

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• OS X Server - setting up a share for network home directories + fast user switching

  - by sohocoke

  I'm nearly finished setting up my Open Directory master to allow users to be managed centrally and logged in on any of the client machines at home. I found discussion suggesting that using an AFP share for the 'Users' automount would result in network users (cf. users defined locally, or Portable Home Directory users) are unable to use fast user switching, as the first user logging in would trigger the automount and mount the 'Users' share with his permissions, preventing further users from using the mount. I've also found some suggestions to configure autofs such that the 'Users' share is mounted prior to any user logging in, but not great amounts of details along these lines. I'd greatly appreciate some instructions to set up autofs - ideally, on the OpenDirectory server rather than each client's etc/fstab or equivalent location, so that it isn't required per every client machine - to get fast user switching working with network users.

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• Vacation sends autoreply message to the recipient as well

  - by elitalon

  Hi, I have configured my Postfix server with vacation for a domain. Sending a message to [email protected] causes two events: The message is delivered to the recipient ([email protected]) An auto-reply message is sent to the sender, alerting that [email protected] should be used instead. Everything works well except for one particular drawback: the auto-reply is also sent to the recipient, so it receives two messages in the end. What can I do to avoid that? I'm only using the $TO variable in the custom vacation.msg message. And here is Postfix's master.cf vacation line: autoreply unix - n n - - pipe flags=Rhu user=vacation argv=/usr/bin/vacation -j -m /home/vacation/.vacation.msg -f /home/vacation/.vacation.db vacation I know using the -j is a little bit risky according to man page, but I'm kind of testing here.

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• Few questions about SLI

  - by toomanyairmiles

  Hi all, thanks in advance for your help. I've just added a second card to my system so I can add a third monitor. I'd got as far as determining both cards need to use the same driver (after a blind alley with another cheap ATi card) so I'm now the proud owner of a second BFG 9800 GTX+ card. One is a BFG OCX and the other an BFG OC (small difference in clock speeds but they are in all other respects the same) but wanted to know the following:- 1) Is it worth adding the SLI connector, will it really boost overall performance (I'm guessing that the OCX card will then perform as the OC card does)? 2) Are SLI connectors (the one's that run across the top of the cards) motherboard or manufacturer specific? 3) If I do SLI the cards will I still be able to use all four monitor connectors or just the two on the master card? I'm not a gamer, I'm an IA and web designer so the system is mostly for Photoshop and Illustrator work and the occasional knock around in command and conquer.

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• How to rename database without first stopping SQL instance to flush connections

  - by John Galt

  Is there a way to force a database into single user mode so a script can be run to rename databases? I find I have to Restart the instance of SQL (to force off any connections from a web app, etc.) and then I can run this script: USE master go sp_dboption MDS, "single user", true go sp_dboption StagingMDS, "single user", true go sp_renamedb MDS, LastMonthMDS go sp_renamedb StagingMDS, MDS go sp_dboption LastMonthMDS, "single user", false go sp_dboption MDS, "single user", false go After this script runs, I can restart IIS for my web app and it can connect to the new production database. All the above works well and we've been doing this for years but now we've upgraded to SQL 2008 and the SQL2008 instance also hosts other databases that support other web apps. So, rather than using a Restart of the whole SQL instance to enable subsequent single-user mode on 2 databases, is there a less intrusive way of accomplishing this? Thanks.

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