For example my site: `www.example.com`

When anyone visits my site, I want them all to redirect to `www.example.com/blog`

But when I open my site it should not redirect me to blog, it should work normally. So how can I achieve the above using .htaccess?

I am going to apply the following code to redirect all pages to `blog`:

    RewriteEngine on
    RewriteCond %{HTTP_HOST} old\www.example.com$
    RewriteRule .* http://www.example.com/blog? [L,R=301]

But how can I specify my IP address in above so I can access all pages and no redirects.