I always forget the exact syntax or parameters of these commands...
Grant Privileges:mysql> GRANT ALL PRIVILEGES ON db_name.* TO username@host -> IDENTIFIED BY 'password' WITH GRANT OPTION;Change root password:first time: $ mysqladmin -u root password NEWPASSWORD
change: $ mysqladmin -u root -p oldpassword newpass
bypass: c:\> mysqld-nt --skip-grant-tables
Backup:fullbackup of db:
$ mysqldump --tab=/path/to/some/dir --opt db_name or
$ mysqlhotcopy db_name /path/to/some/dir