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• How to install a private user script in Chrome 21+?

  - by Mathias Bynens

  In Chrome 20 and older versions, you could simply open any .user.js file in Chrome and it would prompt you to install the user script. However, in Chrome 21 and up, it downloads the file instead, and displays a warning at the top saying “Extensions, apps, and user scripts can only be added from the Chrome Web Store”. The “Learn More” link points to http://support.google.com/chrome_webstore/bin/answer.py?hl=en&answer=2664769, but that page doesn’t say anything about user scripts, only about extensions in .crx format, apps, and themes. This part sounded interesting: Enterprise Administrators: You can specify URLs that are allowed to install extensions, apps, and themes directly through the ExtensionInstallSources policy. So, I ran the following commands, then restarted Chrome and Chrome Canary: defaults write com.google.Chrome ExtensionInstallSources -array "https://gist.github.com/*" defaults write com.google.Chrome.canary ExtensionInstallSources -array "https://gist.github.com/*" Sadly, these settings only seem to affect extensions, apps, and themes (as it says in the text), not user scripts. (I’ve filed a bug asking to make this setting affect user scripts as well.) Any ideas on how to install a private user script (that I don’t want to add to the Chrome Web Store) in Chrome 21+? Update: The problem was that gist.github.com’s raw URLs redirect to a different domain. So, use these commands instead: # Allow installing user scripts via GitHub or Userscripts.org defaults write com.google.Chrome ExtensionInstallSources -array "https://*.github.com/*" "http://userscripts.org/*" defaults write com.google.Chrome.canary ExtensionInstallSources -array "https://*.github.com/*" "http://userscripts.org/*" This works!

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• Strange ASP.NET Queue Performance Counters Behavior?

  - by LemurTech

  We have an ASP.NET 2.0 site running in classic mode. I am seeing very strange behavior in the performance counter values. Perhaps these are bugs (I've been all over Google trying to verify this, without much luck), or perhaps it is just my inexperience with monitoring these things. This PerfMon graph (http://imgur.com/Jv5io5J) represents a load test where I add up to 350 virtual users to the site, at a rate of about 1/sec, performing relatively simple page browsing. At the end of the test, I gradually taper off the number of users. This is a 4 CPU server. Machine.config settings for are at the defaults. The solid blue line is ASP.NET Apps v2.x\Requests Executing for the application in question. The profile makes perfect sense, with a quick ramp-up to 32 executing requests (minWorkerThreads x 4CPUs), followed by a slower ramp-up to 48 ((maxWorkerThreads - minWorkerThreads) x 4CPUs). The solid yellow line is ASP.NET v2.x\Requests Queued. Again, this makes sense: after the initial 32 request threads are activated, the queue begins to build as new thread initialization can't keep pace with incoming requests. But as executing requests reaches its highest possible value of 48, the counter for ASP.NET Apps v2.x\Requests Queued (green solid line) suddenly springs to life and maintains step with the yellow counter. As far as I can tell, and with no other apps running on the server, these two counters should have had the same values from the start. One other odd thing: The counter for ASP.NET v2.x\Request Wait Time (dotted yellow line) also does not spring to life until executing requests reaches 48. Shouldn't I be seeing values here from the moment ASP.NET v2.x\Requests Queued begins to build? And likewise, why would ASP.NET Apps v2.x\Request Execution Time (dotted blue) increase significantly only after that peak of 48 is reached? Shouldn't it ramp-up gradually along with queued requests?

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• fedora apache/nginx pylons

  - by microchasm

  I'm trying to wrap my head around Pylons and how it works. So far... it's been confusing... I'm using EC2 with Fedora8. Everything is working so far (i.e. I have Pylons/python et al installed and after creating a test app and running paster serve I can access the default page via my domain name). As the Pylons docs explain and as I understand, the built in paster serve server is not suited for a production environment. What I am not clear on, then, is what to do next... It seems like nginx is a good option, but I am more familiar with Apache (like .0002%). I plan on having virtualhosts (which nginx says can accomodate). However, I am totally unclear on how the big picture is supposed to work. In order to serve an app, does paster serve need to be running? Does then nginx/apache basically just act as a proxy to shuttle connections to the paster server? How do I start it so it doesn't terminate after closing the ssh connection? If running multiple apps, what do I set as the host/port in development.ini to differentiate the apps? Or if this is not the right way, how do I differentiate beween apps? I am more familiar with MySQL, but willing to negotiate PostgreSQL if it's a better fit. Is it? Is virtualenv a prerequisite to running multiple apps on the same machine? Thanks in advance for any tips.

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• Windows 8 Windows Store (Metro/ModernUI) applications not working (just show 'busy' animation or white screen)

  - by davidm_uk

  I have a Dell XPS 15 which shipped with Windows 7 x64, which I recently upgraded to Windows 8. The process went surprisingly smoothly (given that this was an upgrade, not a complete re-install), and the system generally seems very stable. However, today I noticed that several of the Windows Store apps don't work: they all behave in the same way, launching but then showing a spinning 'wait' animation indefinitely. This is affecting the standard Microsoft Mail, Store, Weather, News, Travel, Finance, Sport, Games and Music apps. The Bing app just shows a Bing logo on a coloured background (but no wait animation). The Calendar, Photos and SkyDrive apps open but then show a white screen. The Maps and Camera apps work without problems. The live tiles on the Start screen are updating correctly, for example the Mail app's tile shows a summary of new mail despite the Mail app's problems. All of these applications were working correctly a few days ago. I'm sure I've used several without problems since the last Windows update occurred on 7th November. Any suggestions on what might have happened and/or how to fix it would be very welcome. I don't need these Windows Store applications, but the fact that they're not working is irritating me.

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• What do Windows 8 Refresh and Reset my PC really do?

  - by Jerry Nixon

  In Windows 8 I can reset everything and reinstall Windows. I assume this will clear my drive and start from scratch? Is that right? Does this create a Windows.old folder? I see this dialog, but aren't my settings and preferences saved in the cloud? If I screw up my settings and reset like this, are my settings also refreshed back to defaults? Since I use SkyDrive to sync my files, my personal files are safe, right? Also, in Windows 8 I can refresh my PC without affecting files. Are my desktop and/or Windows store apps uninstalled when I refresh my PC? I see this dialog, but I still am not sure. For example, when it says apps are "kept" does that mean I don't have to buy them again or are they installed after the refresh is over for me? I assume "from disk" means desktop apps? Or maybe corp apps? What would motivate a user to choose between these two?

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• How can I change the default program installation directory in Windows 7?

  - by Max

  Windows 7 is installed on my C drive, which is quite small. I am very tired of instructing new programs to put their files on my larger D drive during installation; I would like to change the default drive. This article says that you can use a registry hack, but I am giving Microsoft the benefit of the doubt and naively assuming that a configuration option exists somewhere. It's 2010... do I really have to hack my registry to make a simple tweak like this? Also, there's a ServerFault question that explains how to move the "Users" directory and create a symlink, which could also work. However, at the moment I have some apps in C:\Program Files, some apps in C:\Program Files (x86), and some apps in the corresponding folders on D:\, so it would be a hassle. Also, my small OS boot drive is a 10k RPM WD Raptor, and I feel like that probably gives a speed boost to apps installed on it that need to read & write to their directories a bunch. I wonder if it actually matters.

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• Key Windows Phone Development Concepts

  - by Tim Murphy

  As I am doing more development in and out of the enterprise arena for Windows Phone I decide I would study for the 70-599 test.  I generally take certification tests as a way to force me to dig deeper into a technology.  Between the development and studying I decided it would be good to put a post together of key development features in Windows Phone 7 environment.  Contrary to popular belief the launch of Windows Phone 8 will not obsolete Windows Phone 7 development.  With the launch of 7.8 coming shortly and people who will remain on 7.X for the foreseeable future there are still consumers needing these apps so don’t throw out the baby with the bath water. PhoneApplicationService This is a class that every Windows Phone developer needs to become familiar with.  When it comes to application state this is your go to repository.  It also contains events that help with management of your application’s lifecycle.  You can access it like the following code sample. 1: PhoneApplicationService.Current.State["ValidUser"] = userResult; DeviceNetworkInformation This class allows you to determine the connectivity of the device and be notified when something changes with that connectivity.  If you are making web service calls you will want to check here before firing off. I have found that this class doesn’t actually work very well for determining if you have internet access.  You are better of using the following code where IsConnectedToInternet is an App level property. private void Application_Launching(object sender, LaunchingEventArgs e){ // Validate user access if (Microsoft.Phone.Net.NetworkInformation.NetworkInterface.NetworkInterfaceType != Microsoft.Phone.Net.NetworkInformation.NetworkInterfaceType.None) { IsConnectedToInternet = true; } else { IsConnectedToInternet = false; } NetworkChange.NetworkAddressChanged += new NetworkAddressChangedEventHandler(NetworkChange_NetworkAddressChanged);}void NetworkChange_NetworkAddressChanged(object sender, EventArgs e){ IsConnectedToInternet = (Microsoft.Phone.Net.NetworkInformation.NetworkInterface.NetworkInterfaceType != Microsoft.Phone.Net.NetworkInformation.NetworkInterfaceType.None);} Push Notification Push notification allows your application to receive notifications in a way that reduces the application’s power needs. This MSDN article is a good place to get the basics of push notification, but you can see the essential concept in the diagram below.  There are three types of push notification: toast, Tile and raw.  The first two work regardless of the state of the application where as raw messages are discarded if your application is not running.   Live Tiles Live tiles are one of the main differentiators of the Windows Phone platform.  They allow users to find information at a glance from their start screen without navigating into individual apps.  Knowing how to implement them can be a great boost to the attractiveness of your application. The simplest step-by-step explanation for creating live tiles is here. Local Database While your application really only has Isolated Storage as a data store there are some ways of giving you database functionality to develop against.  There are a number of open source ORM style solutions.  Probably the best and most native way I have found is to use LINQ to SQL.  It does take a significant amount of setup, but the ease of use once it is configured is worth the cost.  Rather than repeat the full concepts here I will point you to a post that I wrote previously. Tasks (Bing, Email) Leveraging built in features of the Windows Phone platform is an easy way to add functionality that would be expensive to develop on your own.  The classes that you need to make yourself familiar with are BingMapsDirectionsTask and EmailComposeTask.  This will allow your application to supply directions and give the user an email path to relay information to friends and associates. Event model Because of the ability for users to switch quickly to switch to other apps or the home screen is just one reason why knowing the Windows Phone event model is important.  You need to be able to save data so that if a user gets a phone call they can come back to exactly where they were in your application.  This means that you will need to handle such events as Launching, Activated, Deactivated and Closing at an application level.  You will probably also want to get familiar with the OnNavigatedTo and OnNavigatedFrom events at the page level.  These will give you an opportunity to save data as a user navigates through your app. Summary This is just a small portion of the concepts that you will use while building Windows Phone apps, but these are some of the most critical.  With the launch of Windows Phone 8 this list will probably expand.  Take the time to investigate these topics further and try them out in your apps. del.icio.us Tags: Windows Phone 7,Windows Phone,WP7,Software Development,70-599

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• Why Kiln is based on Mercurial, and not other (D)VCS

  - by Jakub Narebski

  What were the reason for chosing Mercurial as a basis of FogCreek Kiln, a source control management system with tightly integrated code review, and FogBugz integration? Why Mercurial, and not other (distributed) version control system, like Bazaar, Git or Monotone, or creating own version control system like Fossil (distributed software configuration management, including bug tracking and wiki) did? What were features that make FogCreek choose Mercurial as Kiln engine?

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• collection of system properties using web browser

  - by vishwa

  hi i am doing distributed computing environment........For the applications need to get distributed to different clients connected to the server in the network,i prefered to collect the client's system properties like free memory available in the client's system,so that i could distribute d application according to that efficiently......so kindly project me wth some idea.thanks in advance

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• How to generate a random BigInteger value in Java?

  - by Bill the Lizard

  I need to generate arbitrarily large random integers in the range 0 (inclusive) to n (exclusive). My initial thought was to call nextDouble and multiply by n, but once n gets to be larger than 253, the results would no longer be uniformly distributed. BigInteger has the following constructor available: public BigInteger(int numBits, Random rnd) Constructs a randomly generated BigInteger, uniformly distributed over the range 0 to (2numBits - 1), inclusive. How can this be used to get a random value in the range 0 - n, where n is not a power of 2?

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• Choice and setup of version control

  - by Peter M

  I am about to set up an new laptop and in the process transition to a new version control system as part of a general cleanup. Currently I use a centralized version control system (yes it is VSS, and yes I know all the pro's and con's of that system, but as a single user system it works well for me). I have very little requirements for a new system and I am free to choose among any of the current mainstream players, but cost constraints will push me towards oss. Some of my requirements are: Runs on a single machine (ie the laptop in question) under windows I am not sharing things with other developers or workers - this is more for my own historical benefits. I want to version source code, documentation and binary files I have a large hierarchy of projects that are unrelated (see below) I have files within the hierarchy that don't need to be controlled (but could be) Some projects use Visual Studio, so some integration there could be nice. There could be some sharing of files between jobs. I generally only need a small about of branching in code files The directory hierarchy that I have at the moment is somewhat like: Root | |--Customer #1 | | | |--Job #1 | | | | | |--Data files received from Customer for Job (not controlled) | | |--Documentation files (controlled) | | |--Project information files (not controlled - but could be) | | |--Software Project Files (controlled) | | |--Scratch dir for job (not controlled) | | | |--Job #2 | | (same structure as above) | |--Customer #2 | |.. | |--Cusmtomer #n |.. Currently I have about 22 customers with differing numbers of projects underneath them. At the moment I have a single VSS repository based at the root of the directory structure. If I kept with a centralized system (ie SVN) I believe that I should keep the same approach and continue with a single repository based from the root dir. Is this a valid approach? However if I move to a distributed tool then I am unsure of how I should handle the situation. My initial guess is that I should not have a repository based on the root of my entire directory structure - but that is a guess so I really don't know how valid it is. Should I pitch a distributed approach at the Root, Customer, Job or sub-Job directory level? Also what I am not clear on with distributed tools (and perhaps with SVN as well), is if I can branch parts of a repository. For example, I can see branching source code in software projects as being useful, but branching my documentation as not being useful. So if I pitch a repository at the Job level, can I just branch the Software Project Files? Or would all files in that Job be branched? Every time I look at distributed tools I get a nagging feeling that they are not suited to my style of setup. I am uncomfortable with idea of having to manually set up something like 50 to 80 separate repositories (if I pitch at the Job level, or 20+ if at the Customer level) within my directory hierarchy. This feeling also extends to having all those repositories scattered around as well - however I do have a backup strategy that I trust, so this latter feeling is pretty well unfounded. So what advice can you all give me? Thanks in advance!

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• iPhone App to Remotely Control Windows Media Center

  - by Barry-Jon

  Can anyone recommend an iPhone app, for non-jailbroken devices, that can be used to remotely control Windows (7, if it matters) Media Center from outside the home WiFi network? The objective is to be able to connect to the Media Center box during the day when I am not home. For instance, if I realise that the new series of [insert very trendy new show here] is starting tonight and I hadn’t set up a series link I could fire up the app and set my machine to record it. Solutions could include native iPhone apps, iPhone optimised web apps or regular web apps.

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• Single Msi File - Many RemoteApps

  - by Mikeon

  How can I create a single .MSI installer file for many Remote Apps in Remote Desktop Services? Suppose I have 10 applications exposed via RDS. To make life easier I created MSI installer packages so users can "install" those apps. currently I have 10 different .msi files which forces users to install 10 times. Is it possible to make all/some apps into a single .msi file? (I don't control user machines so installing via GPO or other magic is out of question).

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• File association for editing on a mac

  - by Agos

  I'm quite experienced with how file association works for opening files on Mac OS X. I recall reading somewhere that OS X keeps not only the information about which apps can open a file, but also which apps can edit a specific file type. I'm having problems with those applications (Coda, Espresso, Forklift, Flow) that have an “edit with external editor” feature, since issuing this command on HTML files opens them with Dashcode. Dashcode of course is not the current association for opening these files (Safari is), so it's clearly looking for apps that can edit HTML. Since I'd like to use TextMate as my editor in these cases, how can I set this preference?

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• Sizing a Virtual Server

  - by vdubs

  I would like to replace four aging physical servers with one virtual server. What is the best way to insure the VM server is sized correctly? The requirements of the apps that will be running on the four servers are APPLICATION SERVERS - QTY 3 - These will run the application layer for the web server, Business Objects Business Intelligence app, and various other small client server apps. The three most heavy hitting apps each have the following server requirements. So, if I bought three physical servers, this would be the requirements for each of them Processor - Dual 2.83 GHZ (or faster) Ram - 4 GB Raid 5 - 50-100GB usable space NIC - 1 GB Web Server - this will run one asp.net e-business app that will talk to our dedicated SQL server and the three app servers above. The E-Business software has these requirements for the web server Processor - Quad 2.83 GHZ (or faster) Ram - 8 GB Raid 5 - 50-100GB usable space NIC - 1 GB What is the best tool to determine what I need from a hardware standpoing in a virtual server? I am planning on using VMWare.

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• Server 2008 R2 .Net 4 Programs running from Network share won't work

  - by Lim

  we have several .Net Apps stored on a Network share on our old Server (Windows Server 2003). These Apps get called by Windows 7 32bit Clients and work perfectly fine. We recently wanted to upgrade our Server to Windows Server 2008 R2 and moved the Apps from the old share to our new share on the new Server. The problem started right afterwards since all of our .Net Programs won't start anymore from the new share (2008 R2). The Error that comes up is: "This application could not be started." and with a link to Microsoft: http://support.microsoft.com/kb/2715633 (This Error also shows up when i start a simple console HelloWorld from the server share created in VS2012) Does anyone have any Idea why this is not working anymore on the new Servershare? We've been searching for two days now with no result at all. Any Tips / Help / Questions appreciated :) Greetings Lim

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• DB2 users and groups

  - by Arun Srini

  Just want to know everyone's experience and take on managing users/authentication on a multi-node db2 cluster with users groups. I have 17 apps in production (project based company, only 2 online apps), and some 30 users with 7 groups. prodsel - group that has select privilege on all tables produpdt - update group on selective tables (as required by the apps) proddel - delete prodins - insert permissions for the group Now what my company does is when an app uses certain user (called app1user), and needs select and insert privilege on a table, they 1. grant select and insert for prodsel, prodins respectively 2. add the user under those two groups... now this creates one to many relationship between user and privileges, and this app1user also gets select on other tables granted for the prodsel group. I know this is wrong. Before I explain, I need to know how this is done elsewhere. Please share your experiences, even if you use other Databases that uses OS level authentication.

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• Sending SPAM free mail through my website

  - by Sara

  Hi, I've been battling with this issue for couple of months. I need to send bulk mail (not spam) through my social network to users in situations like newsletters, site invitations (when user imports their address book contacts) I'm using shared hosting and it limits 500 mails per hour. Even though i manage to send mails most of them end up in user's spam box. After researching these are the solutions that i finally came up with. 1) Use Google Apps SMTP (http://www.google.com/apps/intl/en/business/features.html) 2) Move into VPS 3) Use shared hosting with throttle enabled Please advise me on what to choose. Will using Google Apps prevent mail being sent as spam? I can't use other 3rd party SMTP like iContact or Aweber as "invitation sending script" will send emails to thousands of contacts, depending on user's addressbook. Thanks in advance

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• Apache - Difference between ScriptAlias and WSGIScriptAlias

  - by Jiri Kadlec

  I'm using apache on RHEL Linux server In my /etc/httpd/conf.d/httpd.conf there are two directives: WSGIScriptAlias /apps /var/www/apps <Directory /var/www/apps > Options MultiViews ExecCGI MultiviewsMatch Handlers SetHandler wsgi-script Order allow, deny allow from all </Directory> ScriptAlias /scripts /var/www/scripts <Directory /var/www/scripts > Options MultiViews ExecCGI MultiviewsMatch Handlers SetHandler wsgi-script Order allow, deny allow from all </Directory> What is the difference? I understand that WSGIScriptAlias is restricted for running Python scripts and ScriptAlias also allows running perl scripts. Can I always use ScriptAlias instead of WSGIScriptAlias? Are there any performance advantages of using WSGIScriptAlias instead of ScriptAlias?

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• Forwarding emails from a domain

  - by Euwyn

  I generally use Google Apps to handle email domains. I'm unfortunately stuck in an infinite loop with Google [1] for one the domains I recently picked up. Right now I use Zerigo's awesome DNS services. How can I get [email protected] forwarded to my Gmail account? Better yet if this is a free/cheap solution and can work with multiple aliases going to different real email addresses ([email protected] - [email protected], [email protected] - [email protected]) [1] Long story. I alternate between "Sorry, you've reached a login page for a domain that isn't using Google Apps." and "This domain has already been registered with Google Apps." Seems like many others are having this issue and Google isn't doing anything about it.

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• Check for Apache state in Linux

  - by loulouzekiller

  Hi i have a java application that starts/stops/restart Apache and it should also check for its status, so i have looked how checking for status of apache and it appears that you have to check for the state of the service, problem is that when i use apachectl start the service httpd is still not started, is that normal ? i check for the service state by doing service httpd status . [root@lxrdcpsm ~]# service httpd status httpd is stopped [root@lxrdcpsm ~]# /apps/apache/2.4.4/bin/apachectl start httpd (pid 20502) already running [root@lxrdcpsm ~]# service httpd status httpd is stopped [root@lxrdcpsm ~]# /apps/apache/2.4.4/bin/apachectl stop [root@lxrdcpsm ~]# service httpd status httpd is stopped [root@lxrdcpsm ~]# /apps/apache/2.4.4/bin/apachectl start [root@lxrdcpsm ~]# service httpd status httpd is stopped [root@lxrdcpsm ~]#

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• Password expiration notice for Active Directory

  - by keithosu

  Are there any tools/apps/scripts out there that will do password expiry notification for Windows 2008 Active Directory credentials? This is needed for our web apps that use Active Directory for LDAP authentication. The problem is those apps do not notify you that your password is going to expire when you login. We have many offsite users who do not have machines bound to the AD. So there is no way to let them know to reset their password. I'd like the user to be notified 30,7 and 1 day before it expires. I'd also like our help desk to get an email for the expiring passwords for the week and recently expired passwords. I've looked at oldcmp.exe from link text and that gets me my reports but it does not do the automation that I'm looking for on the individual users.

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• CNAME point subdomain to another domain

  - by mac

  I know this has been asked before in various forms, but I've tried all the suggestions and had no luck (or maybe skills). I am trying to point a subdomain (mail.cloversalon.com) to Rackspace's hosted Webmail service for a client. My understanding is I should be able to set up cname for the subdomain and point it to rackspace's hostname: apps.rackspace.com I have set up the following cnames: www.mail IN CNAME apps.rackspace.com autodiscover IN CNAME autodiscover.emailsrvr.com mail IN CNAME apps.rackspace.com I have tried doing dig mail.cloversalon.com and nslookup but both report that mail.cloversalon.com is a nonexistent domain. I have restarted the name server numerous times. I'm sure I must be missing something silly. Thanks for any help! Cheers

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• How can I install my installed linux on another hardware too?

  - by donamir

  Hi. It's my state: I installed some apps on a linux server(ubuntu). Apps stack are development tools: -some of Atlassian product -SVN, USVN -Maven, Artifactory -Tomcat & ... My problem: I want to create a bootable dvd to be able to restore same state(OS, configuration and apps) on another hardware(server). Some notes: I prefer ubuntu but my linux can be a different distributions if needed. w I prefer final result (bootable dvd) be simple and easy to use as installing a linux(ubuntu). I prefer a bootable DVD but if it's not possible, any other solution like partial backup/package even if needed to install first OS and then apply the package/backup/... can be good. Finally: Thanks in advance.

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• Disk space mismatch on OS X Server (Leopard)

  - by John Gardeniers

  My Nagios system sent me an alert to inform me that the disk space on one of the drives on our OS X server is very low. When I run df /Volumes/Apps/ I get /dev/disk0s3 117209520 114932472 2277048 99% /Volumes/Apps When I run du -c /Volumes/Apps it reports 11489944 total Why might there be such a vast difference? Even more importantly, how do I find the problem and what can I do about it? I'm essentially just a Windows admin, so am well out of my comfort zone here. I use a Mac but I'm not a Mac admin in any real sense of the word.

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