I installed PostgreSQL-11 in Ubuntu 18.04.02 Server Edition using package manager: sudo apt-get install postgresql-11. But now I'm not able to call psql:
(base) marco@pc:~$ sudo su -l postgres [sudo] password for marco: No directory, logging in with HOME=/ postgres@pc:/$ psql Warning: No existing local cluster is suitable as a default target. Please see man pg_wrapper(1) how to specify one. Error: You must install at least one postgresql-client-<version> package postgres@pc:/$ I tried to specify the port to use but it asks for a postgresql-client: (base) marco@pc:~$ sudo -u postgres /usr/bin/psql -p 5432 Error: You must install at least one postgresql-client-<version> package But the latest postgresql-client is already installed: (base) marco@pc:~$ sudo apt-get install postgresql-client-11 Reading package lists... Done Building dependency tree Reading state information... Done postgresql-client-11 is already the newest version (11.5-1.pgdg18.04+1). 0 to upgrade, 0 to newly install, 0 to remove and 0 not to upgrade. How to solve the problem? Looking forward to your kind help. Marco