tahSin's gaRAge

Installing memcached 1.4.4 on windows

2013-05-08T15:03:00.002+06:00

Recently, I was working on memcached with windows machine. Memcached is built for linux platform. It's latest stable version is 1.4.15. But we haven't found the compatible windows binary file for the latest version. I have found binary for memcache 1.4.5, but it was providing errors while installing with the command:

memcache.exe -d install

It hung up on the window. I googled and found that '-d' option is no longer supported. They are suggesting to use memcache 1.4.4. Then I download memcache 1.4.4 from here.

1.Extract the downloaded files and unzip it.
2.Open CMD and go to the downloaded folder.
3.Run memcache.exe -d install.
4.Now go to Start->Administrative Tools->Services.
5.Double click on the memcache list.
6.Press the Start button.
7.Now we need to download the .dll file for vc9 from here.
8.We will put the .dll file under php/ext folder under xampp.
9.Also we will write extension=php_memcache.dll on the php.ini file under php folder.
10.Now we will restart Apache.

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How to remove provisioning profiles

2013-05-03T15:14:00.001+06:00

Some times you want to delete some old unused provisioning profiles from your mac osx. We can remove those files in several different ways. One way is delete manually using finder. The provisioning profiles are stored under the below file location

~/Library/MobileDevice/Provisioning Profiles

Remove the file from this folder.

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See the book Joomla Mobile Development Beginners Guide

How to migrate from SVN to GIT

2013-04-24T16:29:00.002+06:00

Currently, Git is getting popularity as a distributed version control system. Many Subversion repository is moving from SVN to Git. I have recently moved a SVN repository under GIT version control system.

Git has come up with built in support for svn switching. We will us the git svn command in this regard. First we will get the codebase from SVN with the below command

git svn clone http://path_to_repository folder_name

With the below command you will see all the log history are also carried to the Git repository

git log

To remove svn tags to be more proper tags on git:

git for-each-ref refs/remotes/tags | cut -d / -f 4- | grep -v @ | while read tagname; do git tag "$tagname" "tags/$tagname"; git branch -r -d "tags/$tagname"; done

Next, we will move the remaining references to /remote/references

git for-each-ref refs/remotes | cut -d / -f 3- | grep -v @ | while read branchname; do git branch "$branchname" "refs/remotes/$branchname"; git branch -r -d "$branchname"; done

Now, we will add the origin to the Git URL

git remote add origin https://path_to_git_repo

Finally, you need to push your changes to the remote repository:

git push origin --all

See the book OpenCart 1.4 Template Design Cookbook.
See the book Joomla Mobile Development Beginners Guide

How to install nginx

2013-04-20T18:08:00.002+06:00

Nginx is a very lightweight and highly scalable server. If we don't want to use all of the modules of Apache, then we can go for nginx.

To install nginx, we will follow the below ways:

From apptitude: We can get nginx from the ubuntu package distribution. At the moment, we will get nginx 1.3.12. we need to add the ppa. you will find the ppa information here. To add the ppa, type this command:
```
sudo add-apt-repository ppa:nginx/development[stable]
```
Now, we add the sources to the source list file: /etc/apt/sources.list.
```
deb http://ppa.launchpad.net/nginx/development/ubuntu quantal main 
deb-src http://ppa.launchpad.net/nginx/development/ubuntu quantal main 
```
Here, we will update the apptitude and install nginx:
```
apt-get update 
apt-get install nginx
```
From source: we can also get it from source.

See the book OpenCart 1.4 Template Design Cookbook.
See the book Joomla Mobile Development Beginners Guide

How to compress a website with gzip

2013-04-15T17:32:00.003+06:00

Gzip compression is one of the way to optimize site performance. A client browser sends a header request of Accept-encoding: gzip, deflate. Then server knows that his client is gzip enabled. It compresses it's contents and sends back Content-encoding: gzip, deflate.

Using .htaccess: We can enable gzip compression with .htaccess file. For that we need to enable mod_deflate or mod_gzip. It's pretty simple to work with mod_deflate. To enable it, please uncomment the load module line in httpd.conf file.
```
LoadModule deflate_module modules/mod_deflate.so
```
Now restart apache. You are all set to go with deflate module.
Please open your .htaccess file and add the below code block:
```
# compress text, html, javascript, css, xml:
AddOutputFilterByType DEFLATE text/plain
AddOutputFilterByType DEFLATE text/html
AddOutputFilterByType DEFLATE text/xml
AddOutputFilterByType DEFLATE text/css
AddOutputFilterByType DEFLATE application/xml
AddOutputFilterByType DEFLATE application/xhtml+xml
AddOutputFilterByType DEFLATE application/rss+xml
AddOutputFilterByType DEFLATE application/javascript
AddOutputFilterByType DEFLATE application/x-javascript

# remove browser bugs
BrowserMatch ^Mozilla/4 gzip-only-text/html
BrowserMatch ^Mozilla/4\.0[678] no-gzip
BrowserMatch \bMSIE !no-gzip !gzip-only-text/html
Header append Vary User-Agent 
```
First of we set the file content types which will be process with deflate module to compress. we compress text, html, javascript, css, xml and css files.
Then, we add some exceptions. like for Mozila version 4, we only compress text files. And also for IE, we will not gzip our contents. Because there is some bug with compression in those user agents.
If we don't have mod_deflate enabled or we don't have proper permission to write .htaccess files, then we can compress files using php ob_gzhandler function.
We check the "Accept-encoding" header and return a gzipped version of the file; otherwise the regular version.

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HTML classes are removed in CKeditor 4.1

2013-04-15T15:00:00.002+06:00

Recently, I was working with ckeditor 4.1. It has some security updates. I was posting some HTML contents using the editor. When I go to Design mode from Source mode, and then again come back to Source mode, I found the class attached to the HTML elements were missing.

Ckeditor 4.1 introduces Advanced Content Filter. This filter outs suspicious HTML elements with CSS class, JS attributes. To disable ACF, we need to add the allowedContent property to true on the configuration file.

There are two configuration file in Drupal module. One is the config.js under ckeditor/ckeditor folder and another one is ckeditor.config.js under ckeditor folder. In my case, the later one worked. I have added the below line into the config file

config.allowedContent = true;

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See the book Joomla Mobile Development Beginners Guide

How to manipulate JSON in Javascript?

2013-03-08T11:56:00.000+06:00

We needed to manipulate JSON values on Client side. We searched the web. There are some very good options available for JSON manipulation.
We can use the stringify and parse function for this purpose.

json_flat = {"page":"1","total":"2","ids":[{"id":"3085"},{"id":"3086"}]}; // your flat json
json_object = JSON.parse(json_flat); //convert to an object

//Manipulation
json_object.page = 6; //change values
delete json_object.total; //delete a value

json_flat = JSON.stringify(json); //convert back to flat

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How to convert .app file to .ipa file

2013-02-19T11:45:00.003+06:00

I was working with Corona SDK. It generates .app files of applications for iOS devices. We might need the .ipa files for iOS application. To convert .app files into .ipa files, we need to follow the below simple steps:

1. Extract the .app zip file
2. Place the .app file under a Payload (case-sensitive) folder.
3. Now zip compress the Payload folder and then rename it with .ipa extension.
4. We are done. We get the equivalent .ipa files.

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!important is not working in outlook email

2013-01-31T15:08:00.000+06:00

I was working with email templates and found that !important CSS property is not working in Outlook email template. It works correctly in Gmail and Yahoo!. So, it's better to remove !important property from the email template when we create one.
Again, Background-color CSS property is not working in Gmail. It works in Yahoo. We need to use Background property in this regard. Like below:

background:#fff;

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How to remove missing files from svn?

2013-01-29T12:23:00.000+06:00

I accidentally removed files from my local machine. But they are listed on SVN repository. Hence, those images are showing as '!' in svn status.
To remove those missing files, just run the below command:

svn status | grep '^\!' | cut -c8- | while read f; do svn rm "$f"; done

Then just commit your changes. Fixed.

See the book OpenCart 1.4 Template Design Cookbook.
See the book Joomla Mobile Development Beginners Guide

how to remove ajax cart from opencart

2013-01-27T14:41:00.001+06:00

I was working with opencart. And I was facing problem with removing ajax enabled shopping cart feature from opencart. Prior to 1.5, Opencart provides an option on the admin panel to turn off the ajax cart feature. But this option is no longer exists.
To remove this feature, we need to add some code on the common.js file. There is a function addToCart(). We have added a custom function RedirectToCart().

function RedirectToCart(){
   window.location='index.php?route=checkout/cart';
}

Hence, our addToCart() function becomes like this:

function addToCart(product_id, quantity) {
 quantity = typeof(quantity) != 'undefined' ? quantity : 1;

 $.ajax({
  url: 'index.php?route=checkout/cart/add',
  type: 'post',
  data: 'product_id=' + product_id + '&quantity=' + quantity,
  dataType: 'json',
  success: function(json) {
   $('.success, .warning, .attention, .information, .error').remove();
   
   if (json['redirect']) {
    location = json['redirect'];
   }
   
   if (json['success']) {
    $('#notification').html('' + json['success'] + '');
    
    $('.success').fadeIn('slow');
    
    $('#cart-total').html(json['total']);
    
    $('html, body').animate({ scrollTop: 0 }, 'slow'); 
   }
                        RedirectToCart();
  }
 });
}

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How to test on multiple versions of Firefox

2013-01-18T10:47:00.003+06:00

Utilu MFC provides us way to test our website on multiple versions of Firefox web browser. It ranges from versions 2 to 21.

You can set the URL to open in to multiple versions or you can manually chose which browser to open. Again, we can open up multiple URLs also into multiple versions. We need to use spaces when we will define multiple URLs on the text box.

Utilu MFC includes Firefox Web developer addons into each browser versions. You can also run the tool from command line.
This software is mainly targeted for developers. But others can use Utilu Slient Setup.

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How to add multiple user to git repository

2013-01-16T14:54:00.002+06:00

Git is an excellent system for version controlling. We create one user to set up git repository for ubuntu or unix. But we always need multiple users to access git.

1. Create each user manually on the system.
2. Use gitosis to share access on the private/public key.

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How to add Icon@2x.png to svn

2013-01-16T14:44:00.001+06:00

I was getting below error message while adding a Icon@2x.png to svn:

svn: warning: 'Icon' not found

You can solve the problem with the below command:

svn add Icon@2x.png@

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mhash error for commenting in PHP

2013-01-12T16:54:00.000+06:00

I have faced an error while running a php file on command line. I was getting the below error:

PHP Deprecated: Comments starting with '#' are deprecated in /etc/php5/cli/conf.d/mhash.ini on line 1 in Unknown on line 0

I googled it and found a solution for this error. Now mhash has been removed, so, it is no longer a required feature.
I run the below command:

sudo dpkg -P php5-mhash

It solved the error.

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Copy to multiple destination

2012-12-30T18:50:00.001+06:00

We can't copy a single file to multiple destination with just a single cp command. But we have a workaround.
If we want to copy a single file to multiple destination folders, then just follow the below command:

echo dir1 dir2 dir3 | xargs -n 1 cp file1

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How to fix WARNING: You are not using an encrypted connection

2012-12-30T18:47:00.000+06:00

There was an warning message on drupal.

WARNING: You are not using an encrypted connection, so your password will be sent in plain text. Learn more.

How to fix
To fix the above warning message, we need to change the permission and ownership of the file.
type this command:

chown www-data:www-data -R /var/www/drupal(or your drupal web root name)/sites

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Git remote repo address

2012-12-30T18:35:00.000+06:00

We can get the remote repository address with the below git command:

git remote show origin

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How to fix “The file browser is disabled for security reasons. Please contact your system administrator and check the CKFinder configuration file.”

2012-12-30T18:24:00.001+06:00

We are getting error with ckfinder in drupal. It was showing the below error message:

The file browser is disabled for security reasons. Please contact your system administrator and check the CKFinder configuration file.

1. Open settings.php file: drupal_site_name/sites/default/settings.
2. Uncomment “$cookie_domain = ‘example.com’;” and give your domain name. eg: $cookie_domain = ‘localhost’;

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failed to load java vm library in OpenProj

2012-12-30T18:10:00.000+06:00

We have set java jre. But still it was showing the message:

failed to load java vm library in OpenProj

Later we found that we have install jre for 64bit on a windows7. So, OpenProj couldn't find the java jre path. We have found that OpenProj runs on 32bit machine. So, we need to install java jre for 32 bit machine.
To edit the path, we need to go to the below path to edit OpenProj configuration file.

go to this path: C:\Users\tahsin.hasan\AppData\Roaming\OpenProj\{13702021-43FB-480C-912F-D9B74A538288}
Set the java jre to 32bit(x86) path.

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unwanted
tag in drupal content

2012-12-30T17:52:00.001+06:00

I found there was some unwanted

tags coming into the drupal contents. To solve this issue, I followed the steps below:

go to configure.
> content authoring
> text formats
> configure
> uncheck convert line breaks to <br>, <p> tags

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Same cookie deletion problem

2012-12-30T15:46:00.000+06:00

Two cookies will be identical if they have same cookie name, domain & path. For example,

setcookie('a','value','/','www.example.com'); 
setcookie('a','value','/','example.com');

The above two cookie variable are not same. Their domain name is different.

See the book OpenCart 1.4 Template Design Cookbook.
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how to update svn in mac?

2012-12-30T15:10:00.001+06:00

We will follow the below steps to upgrade our svn version on mac machine.

In Terminal, type "svn --version" to find out what version you currently have.
Install macports and using macports install svn. this will install the latest svn into your system.
Got to your terminal and check your $PATH by typing "echo $PATH". If you don't see /opt/subversion/bin in there, make sure you add it by typing export PATH=/opt/subversion/bin:$PATH. If it DOES exist and appears AFTER /usr/bin, then you may need to remove an older copy of svn that came installed on OS X. To do so, go to /usr/bin and remove all files starting with svn. This isn't an exact science but it should do the trick.
Make sure you reload your .profile first by typing . ./.profile* or you can close the terminal and reopen again. also you can type source .profile. this will also reload profile.
Type "svn --version". You should see that you have the newest version installed!

See the book OpenCart 1.4 Template Design Cookbook.
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Missing table borders in FF

2012-12-30T14:59:00.001+06:00

I was working on displaying a report on a website. I was applying a border to the table cells. some of the cells are not displaying border on firefox. But they are ok with other browsers.

Then I apply the below code block for table property:

table{
border-collapse: separate;
border-spacing: 0;
}

See the book OpenCart 1.4 Template Design Cookbook.
See the book Joomla Mobile Development Beginners Guide

how to install apache mpm worker

2012-12-29T17:29:00.000+06:00

Apache mpm worker is a multi-preprocessing module of apache. By default Apache runs with mpm prefork. If you install worker type of multiprocessor, then it will uninstall the prefork module from the system.
By installing mpm worker process, it will uninstall the php5 process for apache. you need to use fastcgi for working with worker thread.
To install worker thread, type the following commands:

sudo apt-get install apache2-mpm-worker

See the book OpenCart 1.4 Template Design Cookbook.
See the book Joomla Mobile Development Beginners Guide

tahSin's gaRAge

Installing memcached 1.4.4 on windows

How to remove provisioning profiles

How to migrate from SVN to GIT

How to install nginx

How to compress a website with gzip

HTML classes are removed in CKeditor 4.1

How to manipulate JSON in Javascript?

How to convert .app file to .ipa file

!important is not working in outlook email

How to remove missing files from svn?

how to remove ajax cart from opencart

How to test on multiple versions of Firefox

How to add multiple user to git repository

How to add Icon@2x.png to svn

mhash error for commenting in PHP

Copy to multiple destination

How to fix WARNING: You are not using an encrypted connection

Git remote repo address

How to fix “The file browser is disabled for security reasons. Please contact your system administrator and check the CKFinder configuration file.”

failed to load java vm library in OpenProj

unwanted tag in drupal content

Same cookie deletion problem

how to update svn in mac?

Missing table borders in FF

how to install apache mpm worker

unwanted
tag in drupal content