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• Apache - setting up a subdomain

  - by Adam

  I'm having trouble getting a subdomain working for an Apache Linux Install. Following is what I've configured: DNS: connect.goneglobal.com. CNAME 54.251.35.112 Apache httpd.conf: <VirtualHost *:80> DocumentRoot /var/www/html/connect.goneglobal.com ServerName connect.goneglobal.com </VirtualHost> restart httpd - this ip is registered to this server - works for other sites on this apache. (first time I've tried a subdomain). Appears the issue is with DNS potentially and it doesn't seem to get to the site. Note: I have an index.php in the Documentroot. Note: there is an A record for goneglobal.com. which goes to a different hosting provider. thx

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• Canon Pixma 432 network scanner

  - by Donald Cutler

  I have a problem with a Canon Pixma MX432 Printer/Scanner. I just removed Windows 7 and installed Ubuntu 14.04 8/17/2014 on an older desktop that I built (The computer is an AMD build with an ASUS motherboard). The printer/scanner is an all-in-one unit that is networked in my house via WiFi. All of the computers in my house can access this printer/scanner. My Macbook, my wife's Windows 8 laptop, and my kids mini iPads. I am giving Linux a test-drive with some success as far as setting devices up. But, for the life of me I cannot figure out my scanner issue. If anyone can help I would appreciate it. Make/Model: Canon Pixma MX432 PPD Driver: I have no idea how to get this info. Supported?: no, from the information I gather from old forum posts. Works?: the printer works via WiFi perfectly, but not the scanner. The Simple Scan program sees the scanner, but produces an error when I attempt to scan. I also tried XSANE, but that program does not even detect the scanner. NOTE: THE PRINTER IS WORKING OFF OF AN UBUNTU DRIVER AND NOT A CANON DRIVER. Linux Version: Ubuntu 14.04 I tried the steps in this post, downloaded the "scangearmp-mx430series-1.90-1-deb.tar.gz" file, but could not get the scanner to work. http://ubuntuforums.org/archive/index.php/t-2096430.html any suggestions?

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• Errors related to python version added to error log when I start apache2

  - by Jean-Nicolas Boulay Desjardins

  When I start apache I am getting those errors: [Tue Jun 14 02:28:58 2011] [error] python_init: Python version mismatch, expected '2.6.5', found '2.6.6'. [Tue Jun 14 02:28:58 2011] [error] python_init: Python executable found '/usr/bin/python'. [Tue Jun 14 02:28:58 2011] [error] python_init: Python path being used '/usr/lib/python2.6/:/usr/lib/python2.6/plat-linux2:/usr/lib/python2.6/lib-tk:/usr/lib/python2.6/lib-old:/usr/lib/python2.6/lib-dynload'. [Tue Jun 14 02:28:58 2011] [notice] mod_python: Creating 8 session mutexes based on 150 max processes and 0 max threads. [Tue Jun 14 02:28:58 2011] [notice] mod_python: using mutex_directory /tmp [Tue Jun 14 02:28:58 2011] [notice] Apache/2.2.16 (Ubuntu) PHP/5.3.3-1ubuntu9.5 with Suhosin-Patch mod_python/3.3.1 Python/2.6.6 configured -- resuming normal operations I am using Ubuntu Server... Thanks in advance for any help.

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• Is this proper OO design for C++?

  - by user121917

  I recently took a software processes course and this is my first time attempting OO design on my own. I am trying to follow OO design principles and C++ conventions. I attempted and gave up on MVC for this application, but I am trying to "decouple" my classes such that they can be easily unit-tested and so that I can easily change the GUI library used and/or the target OS. At this time, I have finished designing classes but have not yet started implementing methods. The function of the software is to log all packets sent and received, and display them on the screen (like WireShark, but for one local process only). The software accomplishes this by hooking the send() and recv() functions in winsock32.dll, or some other pair of analogous functions depending on what the intended Target is. The hooks add packets to SendPacketList/RecvPacketList. The GuiLogic class starts a thread which checks for new packets. When new packets are found, it utilizes the PacketFilter class to determine the formatting for the new packet, and then sends it to MainWindow, a native win32 window (with intent to later port to Qt).1 Full size image of UML class diagram Here are my classes in skeleton/header form (this is my actual code): class PacketModel { protected: std::vector<byte> data; int id; public: PacketModel(); PacketModel(byte* data, unsigned int size); PacketModel(int id, byte* data, unsigned int size); int GetLen(); bool IsValid(); //len >= sizeof(opcode_t) opcode_t GetOpcode(); byte* GetData(); //returns &(data[0]) bool GetData(byte* outdata, int maxlen); void SetData(byte* pdata, int len); int GetId(); void SetId(int id); bool ParseData(char* instr); bool StringRepr(char* outstr); byte& operator[] (const int index); }; class SendPacket : public PacketModel { protected: byte* returnAddy; public: byte* GetReturnAddy(); void SetReturnAddy(byte* addy); }; class RecvPacket : public PacketModel { protected: byte* callAddy; public: byte* GetCallAddy(); void SetCallAddy(byte* addy); }; //problem: packets may be added to list at any time by any number of threads //solution: critical section associated with each packet list class Synch { public: void Enter(); void Leave(); }; template<class PacketType> class PacketList { private: static const int MAX_STORED_PACKETS = 1000; public: static const int DEFAULT_SHOWN_PACKETS = 100; private: vector<PacketType> list; Synch synch; //wrapper for critical section public: void AddPacket(PacketType* packet); PacketType* GetPacket(int id); int TotalPackets(); }; class SendPacketList : PacketList<SendPacket> { }; class RecvPacketList : PacketList<RecvPacket> { }; class Target //one socket { bool Send(SendPacket* packet); bool Inject(RecvPacket* packet); bool InitSendHook(SendPacketList* sendList); bool InitRecvHook(RecvPacketList* recvList); }; class FilterModel { private: opcode_t opcode; int colorID; bool bFilter; char name[41]; }; class FilterFile { private: FilterModel filter; public: void Save(); void Load(); FilterModel* GetFilter(opcode_t opcode); }; class PacketFilter { private: FilterFile filters; public: bool IsFiltered(opcode_t opcode); bool GetName(opcode_t opcode, char* namestr); //return false if name does not exist COLORREF GetColor(opcode_t opcode); //return default color if no custom color }; class GuiLogic { private: SendPacketList sendList; RecvPacketList recvList; PacketFilter packetFilter; void GetPacketRepr(PacketModel* packet); void ReadNew(); void AddToWindow(); public: void Refresh(); //called from thread void GetPacketInfo(int id); //called from MainWindow }; I'm looking for a general review of my OO design, use of UML, and use of C++ features. I especially just want to know if I'm doing anything considerably wrong. From what I've read, design review is on-topic for this site (and off-topic for the Code Review site). Any sort of feedback is greatly appreciated. Thanks for reading this.

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• Codeigniter + JQuery + Processing.js to replace a Delphi App

  - by Peter Turner

  So, I've got a mandate to make our aged trillion lined Delphi app web based and it needs to make heavy use of the <canvas> element (HTML5 compatibility doesn't seem to be a big issue since we can just make our clients use a compatible browser the way we'd make them use a compatible version of Windows in the win32 environment). The Delphi app in question is almost completely database driven and will still pretty much continue to be developed as the main product. What I am tasked with is pretty much recreating a scaled down version of the program that performs the major functions of the whole program. I couldn't find any frameworks that simulate windows forms using the canvas element, I'm assuming this is probably by design since it is easier just to use HTML, well, be that as it may, I still think it would be cool to have a few of my cool controls on the web (TRichView and TVirtualTree, etc...) So my question is, to anyone who has tried this before, A.) What can we use for an IDE to code this web app (I just use emacs, but no one else in my company does)? B.) Is it a good idea to mix PHP and Processing.JS? It seems like I'm using a lot of AJAX to get anything to happen. 3 calls just for one dialog box to pop up, Loads the HTML for the dialog, Loads the XML to populate the database info on the form Loads the processing.js PJS file which draws the database info to the canvas. Is three a lot, do people usually combine all their gets into one?

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• XAMPP - Unable to serve files larger than ~30MB [on hold]

  - by Sparx401

  I'm developing a site locally with XAMPP on Windows 7, and as far as media is concerned, I'm unable to play media files that are larger than 30MB or so. Both video and audio files (MP4 and MP3 respectively) generate this error in Chrome (and show similar errors in other browsers such as IE9 and Opera): No data received Unable to load the webpage because the server sent no data. Error 324 (net::ERR_EMPTY_RESPONSE): The server closed the connection without sending any data. It seems that the exact number of MB somewhat varies between browsers though. One video in question is 34MB and actually plays in Opera and IE9, but gives the aforementioned error in Chrome. I've checked to make sure the file paths were typed correctly and ensured that the directive for .htaccess is there to serve MP4s: AddType video/mp4 mp4 Also, I have these directives set as well in the same .htaccess file: php_value upload_max_filesize "80M" php_value post_max_size "80M" php_value max_input_time 60 php_value max_execution_time 60 And memory_limit is set in php.ini as "128M" so I'm left wondering: what is causing my files to not play, and what, if any, directives I have to change on the server-side? Perhaps something to do with limitations with the GET method (the method I'm seeing on Chrome's network tab among other header request/response info)?

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• SASL + postfixadmin - SMTP authentication with hashed password

  - by mateo

  Hi all, I'm trying to set up the mail server. I have problem with my SMTP authentication using sasl. I'm using postfixadmin to create my mailboxes, the password is in some kind of md5, postfixadmin config.inc.php: $CONF['encrypt'] = 'md5crypt'; $CONF['authlib_default_flavor'] = 'md5raw'; the sasl is configured like that (/etc/postfix/sasl/smtpd.conf): pwcheck_method: auxprop auxprop_plugin: sql sql_engine: mysql mech_list: plain login cram-md5 digest-md5 sql_hostnames: 127.0.0.1 sql_user: postfix sql_passwd: **** sql_database: postfix sql_select: SELECT password FROM mailbox WHERE username = '%u@%r' log_level: 7 If I want to authenticate (let's say from Thunderbird) with my password, I can't. If I use hashed password from MySQL I can authenticate and send an email. So I think the problem is with hash algorithm. Do you know how to set up the SASL (or postfixadmin) to work fine together. I don't want to store my passwords in plain text...

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• max length of url 257 characters for mod_rewrite?

  - by Daniel

  My url scheme is /foo/var1-var2-var3.../bar I am using these mod_rewrite rules: RewriteBase /foo/ RewriteEngine on RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^ index.php [PT,L] If the length of the string 'var1-var2...' is greater than 257 characters then an error 403 Forbidden and a 404 are returned. However, if the length of the 'var1-var2...' string is 257 characters or less and subsequently followed by a slash the length of the remaining url may be any length. How does one overcome this limit?

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• ubuntu: sending mail with postfix?

  - by ajsie

  i've got some questions about how it works: so ubuntu server comes with postfix installed. if i want my php script to send a mail to lets say [email protected], how does it work? do i have to specify any ip to another MTA (my ISP's MTA?) in postfix's configuration file? and if someone sends back, will it get to my ip? is it postfix that receives it? or has it to do with fetchmail?

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• Gray "apply" button in NetworkManager openvpn connection window

  - by user20627

  I installed all the necessary packages for the networkmanager-openvpn function to function. The openvpn-connection-setting are successfully imported into the networkmanger via the conf file but the apply button is grayed out, so that actually saving and using the connection isn't possible? Does anyone know, where the problem is? It's a fresh install of Ubuntu 10.10 after the upgrade from 10.04 sent the networkmanger down the drain. I was told the following: Sounds like a policy issue. read this thread: http://ubuntuforums.org/showthread.php?t=1616355 look carefully in the file mentioned, at the element. What is there ? "No" will cause the action detailed to be unavailable. Ideally "yes" or "auth_admin_keep" should be there. They will either allow all access, or prompt for a admin password. The above does not seem to work for me - It still has a gray apply button. If I choose a file for User certificate as well as CA Certificate "which is all openvpn supplies and needs" and a key file it will allow me to click apply - but obviously wont connect. :l I am at a lost end.

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• How to find out what is installed on a server

  - by masfenix

  Hi, im an undergrad student and we have special access to a server. The server is a unix server (dont know the OS or anything.. is there a way to find out? ). we also get a website associated with the server. There is a public_html folder. I uploaded with a test file with phpinfo() but the server didnt parse it (yes i had the right extension) . So im guessing PHP isnt installed. is there a way to see what "common" languages ARE installed?

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• Google Analytics checkout page tracking problem

  - by Amir E. Habib

  I am running a multilingual website, each lang on a different domain name. I am trying to lead all purchase requests to the checkout progress, which has its own domain too. In order to keep Google Analytics tracking I've updated the Google Analytics code accordingly. I set the source domain to 'multiple top-level domains'. Everything is going fine so far unless in E-commerce Overview; the "Sources / Medium" is always showing as (direct) - or the name of the source domain. Since I am redirecting using PHP header(location:.. etc.) the Google _link method doesn't seem to be working properly - I want to focus on two questions: Should I create a new profile for the checkout domain in Google Analytics? (I am now using the profile ID of the source domain even though I move to the checkout domain, si that OK?) When I'm trying to pass the cookies of the source domain to the checkout domain, I notice that the Google cookies are copied to the new domain (the cookie path is .checkout-domain/) and they have the same values of the original cookies - But for some reason another set of cookies is created once I access a page with google analytics code in the checkout pages, with different values (same path). Feels like I'm doing something wrong here, so my question is - What am I doing wrong here? Does anyone have an idea how to pass the cookies to the checkout domain?

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• Making an AI walk on a NavigationMesh (2D/Top-Down game)

  - by Lennard Fonteijn

  For some time I have been working on a framework which should make it possible to generate 2D levels based on a set of rules specified by level designers. You can read more about it here as I won't go into details: http://www.jorisdormans.nl/article.php?ref=engineering_emergence Anyway, I'm now at the point of putting the framework to use and have trouble coming up with a solution for AI. I decided to implement a NavigationMesh in the generated levels as I already have that information to start with. Consider the following image (borrowed from http://www.david-gouveia.com/pathfinding-on-a-2d-polygonal-map/): When I run A* on the NavigationMesh, the red path would be suggested when I want to go from point A to B (either direction). However, I don't want my AI to walk that path directly and clipping corners, I'd rather want them to follow the more logical black path. How would I go about going from the Red path to the Black path, are there any algorithms for this. Which steps do I take? Is A* the proper solution for this at all? For some additional information: The proof-of-concept game is a 2D top-down game written in C#, but examples/references in any language are welcome!

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• Error 2020: Got packet bigger than 'max_allowed_packet' bytes when dumping table

  - by Imagineer

  I'm getting the above mentioned error when backing up with ZRM, which is using mysqldump for backup. mysqldump --opt --extended-insert --single-transaction --create-options --default-character-set=utf8 --user=" " -p --all-databases "/nfs/backup/mysql01/dailyrun/20091216043001/backup.sql" mysqldump: Error 2020: Got packet bigger than 'max_allowed_packet' bytes when dumping table TICKET_ATTACHMENT at row: 2286 I have increased the size for 'max_allowed_packet' to be 1G in /etc/my.cnf which is the server setting and for the client side setting I've set it by running this command: mysql -u -p --max_allowed_packet=1G And I have verified that on the client and server side they are of the same value. This is to check the client side value according to this forum posting http://forums.mysql.com/read.php?35,75794,261640 mysql SELECT @@MAX_ALLOWED_PACKET - ; +----------------------+ | @@MAX_ALLOWED_PACKET | +----------------------+ | 1073741824 | +----------------------+ 1 row in set (0.00 sec) And this is the check the server value setting. mysql SHOW VARIABLES | max_allowed_packet | 1073741824 | I have ran out of ideas, and tried searching within expert exchange and googling for solutions but so far none has worked. Reference http://dev.mysql.com/doc/refman/5.1/en/packet-too-large.html Anyone please advise, thank you.

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• How to change default permission for uploaded files in apache with mounted webroot?

  - by faridv

  I have an ubuntu server 11.10 with apache 2.2.20, php 5.3.6 and an installation of Joomla cms. I have used an extra hard disk as my web server storage and mounted it into /data/www/ (I hope it's not where my problem us!). I've set permission of all files and folders in my web root to 755 and user groups for them is set to [default ubuntu user(in my case radio)]:www-data. In past days I had serious problems with joomla not showing new uploaded images and other files and also I can't install any extensions. After hours of searching I found out that uploaded files don't have appropriate permission (they are -rw-------) and Joomla application cannot read, copy or move them after upload. I’m wondering how can I set a default permission so all files that I upload use it? PS: I’ve tested umask but it did nothing. I think it has nothing to do with my problem.

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• windows 7 issues with local domain name

  - by Phill

  Until recently my operating system was XP where for the purpose of development and testing of php and zen cart I set up xampp that included apache http server and mercury mail server I also made changes to C:\Windows\System32\drivers\etc\hosts as follows: 127.0.0.1 www.zen.com # For browser access 127.0.0.1 mail.mercury.com # For email access 127.0.0.1 mercury.com # For mercury mail server This allowed the use of www.zen.com in the address bar of my browser rather than 'localhost' and mail.mercury.com to access email via thunderbird. All was well. Then I installed windows7, I made all the mods and again everything appeared to run as expected.Then I turned off my wireless modem causing all working local connections to fail. Localhost in the address bar still works but not www.zen.com and thunderbird 'cannot find mail.mercury.com' Is there some way to overcome what ever is causing this.

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• General Website Security

  - by Tom

  I pay monthly for a website hosting service that provides me with PHP and FTP support. I can upload my files and create directories and such. Now, I am wondering... If I upload a folder full of images.. or music.. basically personal stuff to my website and name it 'junk1234' can other people find it? Or even search engines? If so, How would I restrict any but those who know the folder name from seeing files in it? Possibly httaccess files? I also have cpanel installed.

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• Can AJAX in a CMS slow down your server

  - by Saif Bechan

  I am currently developing some plugins for WordPress, and I was wondering which route to take. Let's take an example, you want to display the last 3 tweets on your page. Option 1 You do things the normal way inside WordPress. Someone enters the website, while generating the page, you fetch the tweets in php via the twitter api, and just display them where you want. Now the small problem with this is, that you have to wait for the response from twitter. This takes a few ms. NO real problem, but this is question is just out of curiosity. Option 2 Here you don't do anything in WordPress on the initial load, but you do have the API inside. Now you just generate the page, and as soon as the page is done on the client side, you do a small AJAX call back to the server via a WordPress plugin, to fetch your latest tweets. Also called asynchronously. Now the problem with this IMO is that you have much more stress on your server. For starters you have two HTTP requests instead of one. Secondly the WordPress core has to load two times instead of one. Other options Now I know there are a lot of other options: 1) Getting the tweets directly via javascript, no stress on the server at all. 2) Cache the tweets so they are fetched from the DB instead of using the API every time. 3) Getting the tweets from an ajax call that is not a WordPress plugin. 4) Many more. My Question Now my question is if you only compare 1 and 2, which would be a better choice.

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• Evolution of an Application: how to manage and improve core engine?

  - by Phil Carter

  The web application I work on has been live for a year now, but it's time for it to evolve and one of the ways in which it is evolving is into a multi-brand application - in this case several different companies using the application, different templates/content and some slight business logic changes between them. The problem I'm facing is implementing a best practice across the site where there are differences in business logic for each brand. These will mostly be very superficial, using a an alternative mailing list provider or capturing some extra data in a form. I don't want to have if(brand === x) { ... } else { ... } all over the site especially as most of what needs to be changed can be handled with extending the existing class. I've thought of several methods that could be used to instantiate the correct class, but I'm just not sure which is going to be best especially as some seem to lead to duplication of more code than should be necessary. Here's what I've considered: 1) Use a Static Loader similar to Zend_Loader which can take the class being requested, and has knowledge of the Brand and can then return the correct object. $class = App_Loader::getObject('User', $brand); 2) Factory classes. We use these in the application already for Products but we could utilise them here also to provide a transparent interface to the class. 3) Routing the page request to a specific brand controller. This however seems like it would duplicate a lot of code/logic. Is there a pattern or something else I should be considering to solve this problem? 4) How to manage a growing project that has multiple custom instances in production? Update This is a PHP application so the decisions on which class to load are made per request. There could be upwards of 100+ different 'brands' running.

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• Running Non-profit Web Applications on Cloud/Dedicated Hosting [closed]

  - by cillosis

  Possible Duplicate: How to find web hosting that meets my requirements? I often times build web applications purely because I enjoy it. I like building useful tools or open source applications that don't come with a price tag. That being said, many of these applications can be quite complex requiring services beyond shared hosting (ex. specific PHP extensions). This leaves me with two options: Make the web application less complex and run on shared hosting. Fork out money for cloud or dedicated/VPS hosting. Considering the application is free (I don't make money off of it intentionally), the money for hosting comes out of my own pocket. I know I am not alone in this sticky situation. So the question is, what are the hosting options that provide more advanced features such as shell access via SSH, ability to install specific software/extensions (ex. if I wish to use a NoSQL DB such as Redis, MongoDB, or Cassandra), etc., at a free or low price point? I know free usually equates to bad/unreliable hosting -- but it's not always the case. There are a couple providers with free plans I know of: Amazon EC2 - Free micro-instance for 1 year AppHarbor - Cloud based .NET web application hosting w/ free plan. What else is available for hosting of non-profit applications?

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• How to use instances with s3 load balancing?

  - by Slay

  I have some questions about instances and load balancing in amazon s3. I can configured an instances in s3, but i do not understand how to deal with many instances in s3. Currently, my instance is loaded with mysql, php etc (ALL IN ONE). However how do i ensure my instances is scaling? E.g if i have a site that is suppose to be handled using 3 instances and using amazon rds. Do i need to host my code base in the 3 instances? how do people normally do this? like facebook has 1000+ servers. Do they host their code base in all the 1000+ servers? Thanks

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• Raspberry Pi: mvoe home & var folders to USB HDD?

  - by doni49

  I have a Raspberry Pi running raspian. I've installed Apache2, PHP & MySQL. Apache & MySQL are both configured to use sub-directories of /var. I'd like to use a directory on my USB HDD instead of my SD card. I'd also like to move the /home directory to the USB HDD. I'd like to avoid re-partioning my HDD if possible. I thought maybe I could use a symlink to tell raspian that /var is really at /media/USBHDD1/var and /home is really at /media/USBHDD1/home. I tried it last night but couldn't get it to work.

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• Growing mobile developers inside a web development org

  - by Arkaaito

  I work for a "mature web startup" as a web developer (mainly using PHP). Our main site has about 8 million registered members at the moment. However, the site is basically impossible to use on anything that's not a real computer. One of our most-requested features, if not the most requested, is a mobile app or mobile version of the site. I think we need to do it. Management thinks we need to do it. In fact, everyone in the company thinks we need to do it. But it's nigh impossible to hire someone with iPhone/Android skills in the present market. I'm the only person at the company with any level of mobile development experience currently, and I'm not that good (yet), so I'm seeking comments on how to bootstrap a capacity for mobile development. Anything from general tips (should I focus on developing my personal skills first or try to pick up a more experienced mobile dev?) to specific recommendations on training, etc., may be helpful, as long as it doesn't reduce to "sucks to be you." :-)

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• Concerns with compressing sensitive data in OSX

  - by Derek Adair

  Hi, I have some really sensitive data that I am trying to compress and back up so I can reformat. It's absolutely imperative that nothing happens to these files. I'm a developer so I have very little room for error... plus I'd really hate it if any of my .mp3's got corrupted! File Formats Include... .mp3 .php .js .ai - .psd - .flv (and many more) Is the mac OSX file compression safe enough? Or should I look elsewhere? Is there a more efficient/secure file-format other than .zip (i'm assuming so...)

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• Linux EC2 Instance Security Consideration

  - by Amzath

  I am going to host a web site in Amazon EC2 instance which would be a Linux instance. My web application will be developed using PHP, Apache and MySql. As I am new to Linux and Amazon EC2 environment, what are key areas in security should I consider to protect my server? This may be very very generic question as the security itself a vast area. But I need to kick start with most imporant points. That way I would be able to track down all those areas one by one.

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