Quick instructions:
backup: # mysqldump -u root -p[root_password] [database_name] > dumpdatabasefilename.sql

restore:# mysql -u root -p[root_password] [database_name] < dumpdatabasefilename.sql

Backup:
If you want to backup multiple databases at the same time, run show databases in mysql shell:
#mysql -u root -p[password]
mysql> show databases;

Multiple databases backup:
# mysqldump -u root -p[password] --databases database1 database2 > database_1_2.sql

One command to backup all databases in once:
#mysqldump -u root -ppassword --all-databases > all-database.sql

Backup a specific table:
# mysqldump -u root -ptmppassword sugarcrm accounts_contacts \
> /tmp/sugarcrm_accounts_contacts.sql

Restore
Make sure to create the database before you can perform the restore.
# mysql -u root -p[password]
mysql> create database somedatabase;
Query OK, 1 row affected (0.02 sec)
# mysql -u root -p[password] somedatabase < /tmp/somedatabase.sql
# mysql -u root -p[root_password] [database_name] < dumpfilename.sql

Backup a local database and restore to remote server using single command:
[local-server]# mysqldump -u root -p[password] sugarcrm | mysql \
-u root -p[password] --host=remote-server -C sugarcrm1

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