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Homebrew is a package manager for Mac OS X that builds software from its source code. It includes a version of PostgreSQL packaged by what it refers to as a formula. This type of installation might be preferred by people who are comfortable using the command line to install programs, such as software developers. For installing elsewise in OS X see here.

Typical installation of server looks like

$ brew install postgresql

This installs the command line console (psql) as well as a PostgreSQL server locally, so you can create your own databases locally if desired. If you want just the command line console (psql) to access remote databases, see here.

It will give you instructions on creating an initial database. When you do it will be "owned" by your username and create the `postgres` and `template1` databases.

Run the following to start the server.

$ brew services start postgresql # or "brew services run postgresql" to have it not restart at boot time
# or the pg_ctl command it mentions

And to connect/use it, as your user:

$ psql postgres

You can see what other versions are available for install by running

$ brew search postgres
==> Formulae
check_postgres  postgresql ✔    postgresql@10   postgresql@11 ...

You can see which version the current latest is/will be by installing it and inferring it from the directory, running `brew info postgresql` or looking at the formula `brew edit postgresql`

Notes on Homebrew: