Rewrite wordpress URL solution under Linux

Rewrite the URL of WordPress under Linux
The current URL of WordPress is
Http://xxxxxxx/?p=123
I want to rewrite this URL into
http://xxxxxxx/about/
And do not want to use Worpress's own URL format option
should be used. htaccess rewrite it, the current. htaccess file is empty
Please understand the students to help explain the principle, write down the specific how to do, thank you!
------to solve the idea----------------------
WordPress does not have a built-in method get_the_id ()?
Use this to get the article ID.
The number of pages can be obtained by get_pages ().
Print_r (Get_pages ());

Since you are using WordPress, of course, with the method provided inside, why should write their own $_get.

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