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Glossary

Canonical URL

base_url + base_path + permalink

Base URL

base_url is the point of ownership

In most cases that would be https://johndoe.com

In some cases that might be https://school.edu/~/johndoe

It does NOT include a trailing /

Base Path

base_path is the blog directory

In most cases that would be / or /blog/

It DOES include BOTH a LEADING and TRAILING slash.

In the case of https://school.edu/~/johndoe/weblog, the base_path would be /weblog/.

Permalink

The permalink is the permanent part of the URL, after the path to the blog.

For example:

http://blog.johndoe.com/articles/first-post.html the permalink is articles/first-post.html
http://johndoe.com/blog/articles/first-post.html the permalink is still articles/first-post.html
http://school.edu/~/johndoe/blog/articles/first-post.html the permalink is yet still articles/first-post.html

The permalink is ALWAYS RELATIVE (no leading slash)

It is designed so that if you ever move your blog from one domain, point of ownership, or path to a new one, a very simple one-line redirect can be made to your webserver and all of the posts will end up in the right place once again.

base_url the permalink refers to