database.md

MySQL

Start MySQL

sudo /usr/local/mysql/bin/mysqld_safe

Using pager

mysql> pager more

Edit previous query

edit

log what you are doing

mysql> tee queries.log

Get database size

SELECT table_schema "Data Base Name",
sum( data_length + index_length ) / 1024 / 1024 "Data Base Size in MB",
sum( data_free )/ 1024 / 1024 "Free Space in MB"
FROM information_schema.TABLES
GROUP BY table_schema ;

MongoDB

Start as a deamon without log

mongod --fork --logpath /dev/null