php - mysql: unknown option '--includedir /etc/mysql/mariadb.conf.d/' -


i trying login mysql through terminal, getting error when type 

mysql -u root

error:

mysql: unknown option '--includedir /etc/mysql/mariadb.conf.d/'

help me: why not able login mysql through terminal ?

in /etc/mysql/my.cnf

!includedir /etc/mysql/conf.d/

includedir /etc/mysql/mariadb.conf.d/

have tried login password:

mysql -u root -p<password>

fyi: there no space bettween -p , password


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