rewrite my url using htaccess

I am working in codeigniter project I want to rewrite my URL using htaccess. I have a URL like abc.com/main/demo and I want to change it to abc.com/demo I just remove the " main " . how can I achieved it .

Sorry for bad English :(

Solution

This should do it:

RewriteEngine On 
RewriteBase / 
RewriteRule ^main/(.*)$ /$1 [R]

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