I am using MySQL Server 8.0 on Windows 10. I followed this tutorial to initialize. C:\\Program Files\\MySQL\\MySQL Server 8.0\\bin λ mysqld --initialize
C:\\Program Files\\MySQL\\MySQL Server 8.0\\bin λ mysqld --initialize
Try using mysql -u root -p instead of mysqld - u root -p
mysql -u root -p instead of mysqld - u root -p