The following documentation comment has been logged on the website: Page: https://www.postgresql.org/docs/15/user-manag.html Description:
https://www.postgresql.org/docs/current/tutorial-createdb.html The "getting started" page skips right from the installing to already having started the program, but on linux machines, you cannot start psql without inputting a special command, "sudo -u postgres psql". Typing psql will make the program tell you that your username doesn't exist, and you can't create a username for psql without starting psql first. I had to search somewhere else to learn that I had to start psql with that special command. https://www.cherryservers.com/blog/how-to-install-and-setup-postgresql-server-on-ubuntu-20-04
