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• Where to find URLs for sources.list for debian for running apt-get update?

  - by Boda Cydo

  Can anyone tell me where to find URLs to put in /etc/apt/sources.list for debian so that I could run apt-get update? I couldn't find the precise answer by searching Google. When I currently try running apt-get update I get: W: Failed to fetch ftp://ftp.debian.org/debian/dists/lenny/contrib/binary-i386/Packages Unable to fetch file, server said 'Failed to open file. ' [IP: 130.89.148.12 21] W: Failed to fetch ftp://ftp.debian.org/debian/dists/lenny/non-free/binary-i386/Packages Unable to fetch file, server said 'Failed to open file. ' [IP: 130.89.148.12 21] I have no idea how to solve this. Here is how my current sources.list looks like: deb ftp://ftp.debian.org/debian lenny main contrib non-free deb-src ftp://ftp.debian.org/debian lenny main contrib non-free deb ftp://ftp.debian.org/debian lenny/updates main contrib non-free deb-src ftp://ftp.debian.org/debian lenny/updates main contrib non-free I'm running debian_version 5.0.8: # cat /etc/debian_version 5.0.8 Thanks!

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• Why can't I index a SUBST'd drive in Windows7?

  - by Andy

  I've got a SUBST for a folder to drive letter P: I have noticed that exploring these folders from P: is now INCREDIBLY slow, taking up to a minute sometimes to show files. I'm showing them as general files and not thumbnails, so it's not that. Looking at the original folder in explorer is lightning fast. I've checked the indexing options and indeed the folder where my files are stored is checked as indexed. I can see my P: drive in the list, but clicking on the checkbox won't do anything. It's not even checkable. Does anyone have any clues as to how I can fix this? (Running Windows 7 just to be clear).

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• F# Application Entry Point

  - by MarkPearl

  Up to now I have been looking at F# for modular solutions, but have never considered writing an end to end application. Today I was wondering how one would even start to write an end to end application and realized that I didn’t even know where the entry point is for an F# application. After browsing MSDN a bit I got a basic example of a F# application with an entry point [<EntryPoint>] let main args = printfn "Arguments passed to function : %A" args // Return 0. This indicates success. 0 Pretty simple stuff… but what happens when you have a few modules in a program – so I created a F# project with two modules and a main module as illustrated in the image below… When I try to compile my program I get a build error… A function labeled with the 'EntryPointAttribute' attribute must be the last declaration in the last file in the compilation sequence, and can only be used when compiling to a .exe… What does this mean? After some more reading I discovered that the Program.fs needs to be the last file in the F# application – the order of the files in a F# solution are important. How do I move a source file up or down? I tried dragging the Program.fs file below ModuleB.fs but it wouldn’t allow me to. Then I thought to right click on a source file and got the following menu.   Wala… to move the source file to the bottom of the solution you can select the “Move Up” or “Move Down” option. Now that I got this right I decided to put some code in ModuleA & ModuleB and I have the start of a basic application structure. ModuleA Code namespace MyApp module ModuleA = let PrintModuleA = printf "hello a \n" ()   ModuleB Code namespace MyApp module ModuleB = let PrintModuleB = printf "hello b \n" ()   Program Code // Learn more about F# at http://fsharp.net #light namespace MyApp module Main = open System [<EntryPoint>] let main args = ModuleA.PrintModuleA let endofapp = Console.ReadKey() 0

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• How can I set up a dual-site Storage Daemon in Bacula (mirror the backup)

  - by Andy

  On site A, I have sucessfully set up a bacula director on one host, several File Daemons on the hosts I want to backup, and finally one Storage Daemon where the backup actually is stored. If disaster struck the building Site A, I want a second Storage Daemon on another site, Site B. The Filesets, Director etc would be the same, except the jobs will be stored on the other Storage Daemon as well. Are there any best practises on this?

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• How to safely send newsletters on VPS (SMTP) w/ non-hosted domain as "From" email?

  - by Andy M

  Greetings, I'm trying to understand the safest way to use SMTP. I'm considering purchasing a second virtual server mainly for email sending, on which I will set up PHPlist (a free open-source mailing program), so we have the freedom to send unlimited newsletters (...well, 10,000 per day at least, which requires a VPS rather than shared hosting). Here's my current setup with a paid mass-mailing software: I have a website - let's call it MyHostedDomain.org. I send newsletters with the From / Reply To address as [email protected], which isn't being hosting by me but I have access to the email account. Can I more or less safely set this up with an SMTP server on a VPS? i.e. send messages using [email protected] as the visible address, but having it all go through my VPS SMTP? I cannot authenticate it, right? Is this too risky a practice? Is my only hope to use an address with a domain on the VPS, i.e. [email protected]? I already have a Reverse DNS record for the domain hosted on my current VPS. I also see other suggestions, like SenderID and DKIM. But with all these things combined, will this still work? I don't want to get blacklisted, but the good thing is this is a somewhat private list, and users opt-in to subscribe. So it's a self-made audience. (If it makes you feel better, this is related to a non-profit activity, not some marketing scam...it's for a good cause, I assure you!)

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• Nginx 'if' statement in http context?

  - by andy

  I want to set a variable in the http context of nginx so it applies to all my servers. However, 'if' is only supported in server & location. How can I set a variable in the http context so it will affect all servers? Might the lua module be able to help with this (although I'd rather have a pure nginx solution). If so, please provide an example. I just want to set the following variable so it applies to all servers: # only allow gzip encoding. For all other cases, use identity (uncompressed) if ($http_accept_encoding ~* "gzip") { set $sanitised_accept_encoding "gzip"; } if ($http_accept_encoding != "gzip") { set $sanitised_accept_encoding ""; }

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• Invalid command 'VirtualDocumentRoot'

  - by andy

  I'm unsure as to why I'm getting the following error when apache is rebooted: Invalid command 'VirtualDocumentRoot', perhaps misspelled or defined by a module not included in the server configuration Action 'start' failed. The snippet it is referring to is this: <VirtualHost *:80> ServerAdmin [email protected] VirtualDocumentRoot /local/www/staging/%1 ServerAlias *.staging.mydomain.com </VirtualHost> I assumed it was a misspelling as it said, but it was copied directly from another server of mine. It works perfect there. Any ideas?

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• how to install OpenSSL in windows 7 and also how to check, its enabled or not?

  - by Andy

  how to install OpenSSL in windows 7 and also how to check, its enabled or not? I currently run php through the command line locally not on a server. Thanks I recently installed php 5.2.17 I ran a program which connect with a https server and I got the following error Notice: file_get_contents(): Unable to find the wrapper "https" - did you forget to enable it when you configured PHP? in C:\java\newsweaver-api-v2\simple\list- tags.php on line 30 I added extension=php_openssl.dll to php.ini but I'm wondering is openssl native to php 5.2.17 or do I need to download an extntion. Thanks

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• monitoring TCP/IP performance on Solaris

  - by Andy Faibishenko

  I am trying to tune a high message traffic system running on Solaris. The architecture is a large number (600) of clients which connect via TCP to a big Solaris server and then send/receive relatively small messages (.5 to 1K payload) at high rates. The goal is to minimize the latency of each message processed. I suspect that the TCP stack of the server is getting overwhelmed by all the traffic. What are some commands/metrics that I can use to confirm this, and in case this is true, what is the best way to alleviate this bottleneck?

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• Win 7 Remote Desktop connection failure when already logged in.

  - by Andy E

  I have a bit of a strange problem, magnified recently by my broadband dropouts. I wasn't sure whether to post this on SU or SF, so I thought I'd start here as more users would be likely to know what the problem is. In short, when I try and connect to my server (Windows Server 2008) from my laptop running Windows 7, I can only connect if my remote account was previously logged out. If I'm still logged in I get the error message: Windows cannot connect to the remote server. No explanation or anything. If my IP address is the same, I don't have this problem. If I boot up Windows XP Mode and run XP's remote desktop connection it works just fine -- I think the difference there is it takes me to the remote server's logon screen. With Win 7 RDC you never see the logon screen, it asks you for credentials before entering full screen mode. The real problem is that I'm having random broadband dropouts and my IP isn't static. If I logon via Win XP RDC, log out and then run Win 7 RDC then it works fine. I realize I can just use Win XP's RDC for now, but I don't really like keeping XP Mode open if I can help it. Does anyone know a way around this problem? Maybe forcing Win 7 RDC to go to the logon screen, or changing some server-side settings to work around the IP address issue?

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• Google Apps Question

  - by Andy

  I was recently hacked by a person I know who I happened to make an account using my hacked email. I was wondering how I can close off Google Apps without logging in. (I have FTP and such, and I deleted the nameservs already)

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• If I don't want subdomains to send out email, do I need SPF records for them?

  - by Phil

  I have a main domain with (now) valid SPF record, but we also programmatically create lots and lots of subdomains for clients via cpanel PHPXML API. These subdomains are not intended to send any mail. When we create them, they are getting an A record of my ip, and a TXT record of "v=spf1 +a +mx +ip4:[MY IP] ?all". Those are all the DNS records they have Recently we have had a lot of email spoofing and realized there was an invalid (duplicate SPF) for our main domain. We just fixed that, but are unsure if: 1) Can spammers still spoof email from subdomains without MX records, with above current listed SPF? 2) Is it better to have no SPF for subdomains than the one I have listed? 3) Is there a way to prevent subdomains from sending/spoofing email via my main domain's SPF? Here is the main domain SPF that our host suggested we switch to: "v=spf1 a mx ptr a:dedrelay.[webhost].com include:dedrelay.[webhost].com ~all"

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• Learning how to design knowledge and data flow [closed]

  - by max

  In designing software, I spend a lot of time deciding how the knowledge (algorithms / business logic) and data should be allocated between different entities; that is, which object should know what. I am asking for advice about books, articles, presentations, classes, or other resources that would help me learn how to do it better. I code primarily in Python, but my question is not really language-specific; even if some of the insights I learn don't work in Python, that's fine. I'll give a couple examples to clarify what I mean. Example 1 I want to perform some computation. As a user, I will need to provide parameters to do the computation. I can have all those parameters sent to the "main" object, which then uses them to create other objects as needed. Or I can create one "main" object, as well as several additional objects; the additional objects would then be sent to the "main" object as parameters. What factors should I consider to make this choice? Example 2 Let's say I have a few objects of type A that can perform a certain computation. The main computation often involves using an object of type B that performs some interim computation. I can either "teach" A instances what exact parameters to pass to B instances (i.e., make B "dumb"); or I can "teach" B instances to figure out what needs to be done when looking at an A instance (i.e., make B "smart"). What should I think about when I'm making this choice?

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• How to set the front page to be the front page in Joomla

  - by Null

  In Joomla how do I set the frontpage to be the front page (without being in the main menu). Currently whatever I set to be the default in the main menu is the first page, but I don't want the front page to be in the main menu. the site link if it helps.

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• How to refactor to cleaner version of maintaing states of the widget

  - by George

  Backstory I inherited a bunch of code that I'd like to refactor. It is a UI application written in javascript. Current state: We have main application which consist of several UI components. And each component has entry fields, textboxes, menus, etc), like "ticket", "customer information", etc. Based on input, where the application was called from, who is the user, we enable/disable, hide, show, change titles. Unfortunately, the app grew to the point where it is really hard to scale, add new features. Main the driver (application code) calls set/unset functions of the respective components. So a lot of the stuff look like this Main app unit function1() { **call_function2()** component1.setX(true); component1.setY(true); component2.setX(false); } call_function2() { // it may repeat some of the code function1 called } and we have a lot of this in the main union. I am cleaning this mess. What is the best way to maintain the state of widgets? Please let me know if you need me to clarify.

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• Load testing nginx inside AWS

  - by andy

  I'm trying to load test nginx running on AWS. I need to try to optimise it to handle 1Gbps of inbound traffic. Currently I've got it to peak at 85Mbit/s by running nginx on an m1.large with 4 other machines hitting it by using ab with -i (for head requests) -k (keepalives) -r (ignore failed requests) -n 500000 -c 20000. I'm struggling to generate more than 85 Mbit/s traffic from 4 machines, yet when I do scp a large file I get nearly 0.25Gbit/s of traffic going over the network. Are there any tools or approaches that I could use to load test nginx that might generate more load? I'm only interested in inbound traffic, so perhaps a DoS tool could help if it chucks away responses? I'm hitting a very small (40 byte) static asset, and have peaked at handling 50K concurrent connections and getting 25k reqs/s when just using a single load generator machine.

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• Lotus Notes won't open a hyperlink/uri in a browser!

  - by Andy O

  I'm still new to Lotus, but I have LN 8.0.2, and have it set up to open hyperlinks "using the browser i have set as the default for this operating system" which in my case is Firefox 3.6.13. If I try to select "use the browser embedded in this client" then it just forgets it after I click save (ie if i go back into preferences it's reset to the default for this operating system option) Windows XP SP 3. Whenever I click on a link in an email...memo... then it does nothing and flashes an underscore underneath it. It's so basic and so annoying there must be something I'm missing. Any help please!

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• 412 Precodition Failed error only occurs on certain networks

  - by Andy

  One of my favorite websites: http://jessiejofficial.com (yes, I'm a Jessie J Fan :')) has recently started displaying the error message "412 Precondition Failed" whenever I visit it from my home network, even when I use Tor Browser. At first I thought that this was an issue with the whole website, however I have contacted the web developer and he has said that they has been plenty of hits within the last 48 hours. Plus, I discovered tonight that I can access the website from my phone, through the mobile network. So it appears to just be my network as all of the devices in my house connected to the WiFi display the same error when I try to visit any page of the site. However there have been no changes that we are aware of or are noticeable to our network since the website was accessible, and I have just heard that another person in a different part of the country is experiencing the same difficulties also. Any help/advice/suggestions would be appreciated greatly Update: When trying to ping 'jessiejofficial.com' in Windows command prompt the request times out on all four attempts, on any computer connected to the wireless network. I can now also confirm that the same thing occurs on my MacBook Pro.

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• Comparison of Unix shells

  - by Andy White

  Of the major Unix shells (bash, ksh, tcsh, zsh, others?), are there any compelling reasons to use one over another? Which is the most interactive/command-line friendly? Which is the most conducive/intuitive for writing scripts? Are there any major built-in features that one shell offers that others don't? Are any of these shells really good for one type of function, but not another? Or are they all pretty well-rounded/flexible? Is it just a matter of personal preference? I can make this community wiki if anyone prefers.

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• Compare-Object gives false differences

  - by Andy

  I have some problem with Compare-Object. My task is to get difference between two directory snapshots made at different times. First snapshot is taken like this: ls -recurse d:\dir | export-clixml dir-20100129.xml Then, later, I get second snapshot and load both of them: $b = (import-clixml dir-20100130.xml) $a = (import-clixml dir-20100129.xml) Next, I'm trying to compare with Compare-Object, like that: diff $a $b What I get is in some places files that were added to $b since $a, but in some -- files that were in both snapshots, and some files, that were added to $b, are not given in Compare-Object output. Puzzling, but $b.count - $a.count is EXACTLY the same as (diff $a $b).count. Why is that? Ok, Compare-Object has -property param. I try to use that: diff -property fullname $a $b And I get the whole mess of differences: it shows me ALL the files. For example, say $a contains: A\1.txt A\2.txt A\3.txt And $b contains: X\2.mp3 X\3.mp3 X\4.mp3 A\1.txt A\2.txt A\3.txt diff output is something like that: X\2.mp3 => A\1.txt <= X\3.mp3 => A\2.txt <= X\4.mp3 => A\3.txt <= A\1.txt => A\2.txt => A\3.txt => Weird. I think I don't understand something crucial about Compare- Object usage, and manuals are scarce... Please, help me to get the DIFFERENCE between two directory snapshots. Thanks in advance UPDATE: I've saved data as plain strings like that: > import-clixml dir-20100129.xml | % { $_.fullname } | out-file -enc utf8 a.txt And results are the same. Here're excerpts of both snapshots (top 100-something lines, a.txt and b.txt), output of compare-object, and output of UNIX diff (unified). All files are UTF-8: http://dl.dropbox.com/u/2873752/compare-object-problem.zip

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• Cannot flush the DNS on Snow Leopard 10.6.8

  - by Andy Woggle

  I have an absolutely bizarre problem and it has STUMPED me.. I cannot seem to flush the DNS on my Snow Leopard 10.6.8. I have tried sudo dscacheutil -flushcache , i've tried dscacheutil -flushcache and it hasn't worked. I'm building a website, and changed the directories yesterday. Now when I check it on my other machine, it works fine. When I get somewhere from distance to check, it works fine, but it's seemingly stuck in the DNS on this machine as the CSS is not showing. Is there a hard-flush method (if that makes sense)? The two above did not work.

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• Can an UPS be too powerful?

  - by Andy

  Our old network admin bought the top range UPS a few months ago but never came around to setting it up and is no longer with the company. Now the old UPS broke down and needs to be replaced, but an external company that did an audit said that that UPS won't work. Now we are no hardware specialists, but the difference in specs is a higher output from 5A to 8.8A meaning a higher output. But isn't the UPS supposed to give the server the required output anyway? This 'independent' audit does sell its own hardware including UPSes so I'm not sure how much bias they have. Is there a reason why we can't replace the old broken UPS with the new more powerful one? Is there a way we can check to see if the UPS works with our server? ok, i wrote down the numbers again, the Volts and Amps are what are on the back (where you connect up the plugs which seem diffrent from on the front label.) old one APC SmartUPS 1500 220-240V -- 6.8A new one Dell UPS 1920W 250V -- 10A

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• How can I too many files upload more fast way to Cloud files in Rasckspace?

  - by andy kim

  I have a lot of image files, it's all I want to upload to RackSpace cloud files about a million in a single directory the fastest and most efficient way. but I'm use uploading python-cloudfiles script is very slow and I want to know different ways or python script code. because one by one connection upload is very slow. I think one files tar and uncompress directory is better way. but cloudfiles do not support this way. Who know any other way?

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• Can the Nikon D50 be hacked to record video?

  - by andy

  I mean hacked in terms of software only, and minor hardware hacking if necessary, without of course breaking the camera. Also, if possible, video should be able to be recorded at an acceptable frame rate, around 20fps. thanks p.s. Reason for this question: Just to give some context before people tell me to buy a new camera! For still photography I now almost exclusively shoot film with a Nikon F3, and my D50 is gathering dust. I want to shoot some video of my Capoeria classes, for personal use, and thought maybe I could put my D50 to good use. Yes, I could buy a D5000 or older D90, but really I just want to shoot some video with my nice wide Nikkor lenses at no extra cost!

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• First-class help desk solution? [closed]

  - by Andy Gregory

  A help desk, for larger companies is a place for centralized help within an enterprise to help the users of their products and services.Therefore,to find the solution that best fits your business requirements, it is important to research, examine, and compare help desk software. As far as I know,Hesk is an free helpdesk software with some limited features while h2desk can provide the hosted solution. But for my small business,i just need a web based help desk software which can provide ticket management and knowledge base faq. We need unlimited staff support. Maybe a freeware help desk software can not meet our needs. So,we are willing to pay for effective helpdesk solution. But it should be low cost. We have gotten two choice: iKode Helpdesk Nethelpdesk Our helpdesk team are tend to iKode Helpdesk. Any other efficient first-class help desk solution to share?

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