Import / Export a mysql database on the command line
To export a mysql database (as a dump) from the command line run:
mysqldump database_name > database_exportname.sql
To import a mysql database dump into a database:
mysql database_name < database_exportname.sql
To export all databases into a dump:
mysqldump --all-databases > all_databases_export.sql
To import one of these mysql databases from the dump into a database:
mysql --one-database database_name < all_databases_export.sql