I want to change the URL of the "create An account" link that is on the top right of the site. I want the link to instead of being customer/account/create/ I want it to be customer/account/login
I believe I have to edit the default xml file that is
app/design/frontend/Smartwave/porto_child/Magento_Customer/layout
here is the file just not sure how to edit it
<?xml version="1.0"?>
<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
<body>
 <referenceBlock name="header.links">
 <block class="Magento\Customer\Block\Account\Customer" name="customer" template="account/customer.phtml" before="-"/>
 <block class="Magento\Customer\Block\Account\AuthorizationLink" name="authorization-link-login" template="account/link/authorization.phtml"/>
 </referenceBlock>
 <block class="Magento\Theme\Block\Html\Header" name="header" as="header">
 <arguments>
 <argument name="show_part" xsi:type="string">welcome</argument>
 </arguments>
 </block>
 <move element="header" destination="header.links" before="-"/>
 <move element="register-link" destination="header.links"/>
 <move element="top.links" destination="customer"/>
 <move element="authorization-link" destination="top.links" after="-"/>
 </body>
</page>
 2 Answers 2
Change class of block register-link to Magento\Framework\View\Element\Html\Link
Now you can pass the parameter path to change link
So your final default.xml should look like this:
app/design/frontend/Smartwave/porto_child/Magento_Customer/layout/default.xml
<?xml version="1.0"?>
<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
<body>
 <referenceBlock name="top.links">
 <block class="Magento\Framework\View\Element\Html\Link" name="register-link">
 <arguments>
 <argument name="label" xsi:type="string" translate="true">Create an Account</argument>
 <argument name="path" xsi:type="string" translate="true">customer/account/login</argument>
 </arguments>
 </block>
 </referenceBlock>
 ....
 ....
 </body>
</page>
 You can remove existing Create an Account link and add a custom link. You need to edit following file:
mage2Root/app/design/frontend/{Package}/{theme}/Magento_Theme/layout/default.xml
Add below code inside body tag: 
<referenceBlock name="register-link" remove="true"/>
<referenceBlock name="top.links">
 <block class="Magento\Framework\View\Element\Html\Link" name="add-new-header-link">
 <arguments>
 <argument name="label" xsi:type="string" translate="true">Create an Account@</argument>
 <argument name="path" xsi:type="string" translate="true">customer/account/login</argument>
 </arguments>
 </block>
</referenceBlock>
If needed you can use after,before for adjust position of link.
Hope above will help!
- 
 2We don't need to remove existing
register-linklinkPrince Patel– Prince Patel2018年12月12日 05:34:34 +00:00Commented Dec 12, 2018 at 5:34 - 
 Yes, you are right! great..Pawan– Pawan2018年12月13日 03:41:23 +00:00Commented Dec 13, 2018 at 3:41