Create Admin User from Terminal in Magento 2.x

If you would like to create Administrator accounts in your Magento 2x installation from your Terminal/SSH then try the following command:

N.B:The password must be at least 7 characters in length and must  include at least one alphabetic and at least one numeric character. A longer & more complex password is recommended. Enclose the entire password & other fields string in single quotes & NOT DOUBLE QUOTES.

For example: --admin-password=''A0b9%t_3`g'

 php bin/magento admin:user:create --admin-user='your_username' 

--admin-password='your_pass' --admin-email='your_email'

--admin-firstname='your_firstname' --admin-lastname='your_lastname'  

The following parameter & values are compulsory:

1. Name: --admin-firstname
   Value: Magento administrator user's first name.
   Required: Yes
   
2. Name: --admin-lastname
   Value: Magento administrator user's last name.
   Required: Yes
   
3. Name: --admin-email
   Value: Magento administrator user's e-mail address.
   Required: Yes
   
4. Name: --admin-user
   Value: Magento administrator user name.
   Required: Yes
   
5. Name: --admin-password
   Value: Magento administrator user password.
   Required: Yes