sudo apt-get install build-essential
sudo apt-get install zlib1g-dev libreadline6-dev
wget https://ftp.postgresql.org/pub/source/v11.1/postgresql-11.1.tar.bz2
tar -xvf postgresql-11.1.tar.bz2
cd postgresql-11.1
./configure
make
sudo su
make install
adduser postgres
mkdir /usr/local/pgsql/data
chown postgres /usr/local/pgsql/data
su - postgres
/usr/local/pgsql/bin/initdb -D /usr/local/pgsql/data
/usr/local/pgsql/bin/postgres -D /usr/local/pgsql/data >logfile 2>&1 &
/usr/local/pgsql/bin/psql postgres