How can i change my my URL with .htaccess on Symfony 2 - .htaccess

Question

I would like to change my url using only .htaccess, how can i change my url from this : http://s1rd-ubuntu-01/vpscraplist/web/app_dev.php/myproject/ to this http://vpscraplist/platform/ or this http://vpscraplist/
i have also more pages on my project as http://s1rd-ubuntu-01/vpscraplist/web/app_dev.php/myproject/add and http://s1rd-ubuntu-01/vpscraplist/web/app_dev.php/myproject/edit ...
I've already used thoses scripte but not work for me :(
<IfModule mod_rewrite.c>
Options +FollowSymlinks
RewriteEngine On
# Explicitly disable rewriting for front controllers
RewriteRule ^app_dev.php - [L]
RewriteRule ^app.php - [L]
RewriteCond %{REQUEST_FILENAME} !-f
# Change below before deploying to production
#RewriteRule ^(.*)$ /app.php [QSA,L]
RewriteRule ^(.*)$ /app_dev.php [QSA,L]
or this one :
<IfModule mod_rewrite.c>
Options +FollowSymlinks
RewriteEngine On
# Explicitly disable rewriting for front controllers
RewriteRule ^/web/app_dev.php - [L]
RewriteRule ^/web/app.php - [L]
# Fix the bundles folder
RewriteRule ^bundles/(.*)$ /web/bundles/$1 [QSA,L]
RewriteCond %{REQUEST_FILENAME} !-f
# Change below before deploying to production
#RewriteRule ^(.*)$ /web/app.php [QSA,L]
RewriteRule ^(.*)$ /web/app_dev.php [QSA,L]
Thank you and sorry about my english !

Answer 1

In my opinion the best approach is to keep the default htaccess of symfony, and to configure your apache vhost as explained there:
http://symfony.com/doc/current/cookbook/configuration/web_server_configuration.html
(don't forget to enable the apache rewrite if it is not dude: sudo a2enmod rewrite )
create the vhost file:
sudo nano /etc/apache2/sites-available/yoursite.conf
with:
<VirtualHost *:80>
ServerName mydomain.net
ServerAlias www.mydomain.net
DocumentRoot /var/www/myprojectSymfony/web
<Directory /var/www/myprojectSymfony/web>
AllowOverride All
Order Allow,Deny
Allow from All
</Directory>
<Directory />
Options FollowSymLinks
AllowOverride None
</Directory>
ErrorLog /var/log/apache2/project_error.log
CustomLog /var/log/apache2/project_access.log combined
</VirtualHost>
Once you have have created your virtual file, you must enable them
sudo a2ensite yoursite.conf
When you are finished, you need to restart Apache to make these changes take effect:
sudo service apache2 restart