Add user and privileges and set password error

Question

I have been tying to figure out why I cant add this user, I get the error msg. of bash: GRANT: command not found.

I've read other posts but cant seem to get past it, this is what I've been trying to run

GRANT ALL PRIVILEGES ON *.* TO 'username'@'localhost' IDENTIFIED BY 'password' WITH GRANT OPTION;

ERROR:

bash: GRANT: command not found.