[ubuntu] Can't coect to Mysql

Hi ,

I installed mysql server and client in my system. But i can't coect by using

sudo mysql -u root -p

shows "mysql: unknown option '--EOF'"

if i run
$ps -ef|grep mysql

mysql 13197 1 0 16:13 ? 00:00:02 /usr/sbin/mysqld
trivand 13550 2180 0 16:28 ? 00:00:00 /bin/bash /usr/bin/mysql-workbench
trivand 13553 13550 0 16:28 ? 00:00:00 /bin/sh /usr/bin/catchsegv /usr/bin/mysql-workbench-bin
trivand 13555 13553 0 16:28 ? 00:00:07 /usr/bin/mysql-workbench-bin
trivand 14920 10484 0 17:48 pts/4 00:00:00 grep --color=auto mysql

$dpkg --get-selections | grep mysql

libdbd-mysql-perl install
libmysqlclient18:amd64 install
libmysqlcppco7 deinstall
mysql-client install
mysql-client-5.5 install
mysql-client-core-5.5 install
mysql-common install
mysql-server install
mysql-server-5.5 install
mysql-server-core-5.5 install
mysql-workbench deinstall
mysql-workbench-community install

Please help me on this.
Thanks in advance.

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