connect to postgres database command line mac code example
Example 1: how to open postgresql in mac
brew services start postgresqlpsql postgres
Example 2: can't connect to postgresql mac os
rm -f /usr/local/var/postgres/postmaster.pid
brew services restart postgresql
Example 3: how to open postgresql in mac
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"