set default page to Particular store view

You can do this either through server configuration (nginx/Apache) or through setting a $_SERVER['MAGE_RUN_CODE'] in index.php.

The latter would require creating a directory crescent in MAGENTO_ROOT, copying index.php to it and assigning a proper store code to be run there - in your case it would be crescent.

I'm assuming your MAGENTO_ROOT is inside /ecommerce/ directory (where your main index.php is placed).

Example of directory structure and index.php/.htaccess:

-- ecommerce |-- crescent | -- index.php (described below) | -- .htaccess (described below) |-- index.php 

The content of index.php inside crescent would look something like this:

$_SERVER['MAGE_RUN_CODE'] = 'crescent'; $_SERVER['MAGE_RUN_TYPE'] = 'store'; 

URL Rewrites are used to rewrite entirely different things.

This solution with a separate directory also allows you to make a translation/separate design for error pages.

You could also use .htaccess for this where based on the URL you could do something similar to this which's based on domains:

SetEnvIf Host .*.pl* MAGE_RUN_CODE=crescent SetEnvIf Host .*.pl* MAGE_RUN_TYPE=store 

but you're sure that the store in /crescent/ should be that one so you can do this:

SetEnv MAGE_RUN_CODE=crescent SetEnv MAGE_RUN_TYPE=store