setup postgres in arch linux

postgresql-setup.sh

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#setup postgresql

sudo pacman -S postgresql && \
sudo mkdir /var/lib/postgres/data && \
sudo chown -c -R postgres:postgres /var/lib/postgres && \
sudo -i -u postgres

initdb -D '/var/lib/postgres/data'
logout

sudo systemctl start postgresql 
createuser -s -U postgres --interactive
Enter name of role to add: myUsualArchLoginName

#Now you can create databases and access them as an Arch user. Here's an example:
createdb myDatabaseName
#Use the psql command to access the PostgreSQL database shell, psql. (-d specifies the database to connect to.)
psql -d myDatabaseName