301 entire site

[Atomicx]

Is there a good 301 code snippet to change just the root domain but keep the ending extensions?

I just bid on a domain that I think would be much better for me moving forward, but do not want to have to try going through thousands of pages to do their 301 individually

My site is almost 4 yrs old. Well established and has a large fanbase. Several of our social networks are under the name of the new branded domain, hence part of the desire to switch.

[Ikusa]

Very simple.  Find your .htaccess file  for the URL you want to redirect FROM and add a line like the following:

Redirect 301 / http://www.example-site.com/

Just change out your own destination URL of course.  Don't ignore that solo slash, that's key as well.

[Atomicx]

And that will redirect

domain.com/page1/ to domain2.com/page1/

and domain.com/morefolder/evenmore/ to domain2.com/morefolder/evenmore/

and do this for every page across the site?

[Ikusa]

Exactly.  Assuming your directory site structure is the same, it will do a blanket redirect from one URL to the new one.