Create a new DB

CREATE DATABASE name_of_db;

Warning

Remember to put a semicolon ; at the end of the command.

List all DBs

\l
 
#                               List of databases
#   Name    |  Owner   | Encoding | Collate |  Ctype  |   Access privileges
# -----------+----------+----------+---------+---------+--------------------
# postgres  | postgres | UTF8     | C.UTF-8 | C.UTF-8 |
# template0 | postgres | UTF8     | C.UTF-8 | C.UTF-8 | =c/postgres ...
# template1 | postgres | UTF8     | C.UTF-8 | C.UTF-8 | =c/postgres ...
# test      | postgres | UTF8     | C.UTF-8 | C.UTF-8 |

Go to a DB

\c name_of_db
 
postgres=# \c test
# You are now connected to database "test" as user "windsuzu".
test=#

Remove a DB

DROP DATABASE name_of_db;

Warning

Remember to put a semicolon ; at the end of the command.

References