psql -d psql -d postgresql://user:pass@host:port/dbname more stuff

Name my_database1
    Hostname=host_to_database
    Port=port_to_database
    User=username
    Pass=password
    DBName=dbname
Name my_database2
    Hostname=host_to_database2
    Port=port_to_database2
    User=username2
    Pass=password2
    DBName=dbname2