Answers for "POSTGRESQL CREATE DATABASE FROM COMMAND LINE"

create postgres database

sudo -u postgres psql
postgres=# create database mydb;
postgres=# create user myuser with encrypted password 'mypass';
postgres=# grant all privileges on database mydb to myuser;

create database postgres

createdb -h localhost -p 5432 -U postgres testdb
password ******

postgresql createdb

$ createdb -p 5000 -h eden -E LATIN1 -e demo
CREATE DATABASE demo ENCODING 'LATIN1';
/*createdb [connection-option...] [option...] [dbname] [description]*/