Linux WordPress FTP Account Solution

Use Ubuntu to build WordPress after changing the theme when prompted to enter the FTP account and password, the solution is mainly to the WordPress main directory of the rights owner to Apache:

Find the user name and user group used by the Apache service

  Ps-aux

Find/usr/sbin/apach username, it is the owner of Apache, I here is Www-data

sudo chown www-data:www-data-r/var/www/html/

Because my WordPress home directory is/var/www/html/

Then refresh WordPress and find the problem solved!