mysqldump is an easy and quick tool to create backup of MySQL databases. It creates a dump file of MySQL databases containing SQL commands to recreate the database at the destination MySQL server. mysqldump allows you to backup a single database and multiple databases as well.
Take MySQL Database Backup
To take backup of MySQL database, first you'll have to connect to MySQL server through command line.
mysql -uusername -p // Replace username with your username.
Enter MySQL user password and hit Enter. You will see mysql prompt appears. To take backup of MySQL database, first you must know the database name you wish to backup. You can display all databases by firing following command at the mysql prompt.
Now, assume that you want to take backup of database named mysql-database.
mysqldump mysql-database > mysql-database-backup.sql
This command will backup database mysql-database into a SQL dump namely mysql-database-backup.sql.
mysqldump --databases mysql-database-one mysql-database-two mysql-database-three > database-backups.sql
This command will backup databases mysql-database-one, mysql-database-two and mysql-database-three into a SQL dump file namely database-backups.sql.
Restore MySQL Database
To restore a MySQL database from a backup file, fire following command.
mysql mysql-database < mysql-database-backup.sql
Here, mysql-database is the name of database you want to restore and mysql-database-backup.sql is the backup file to be restored.