Postgres install from source on Ubuntu when the distribution installation won't give you a specific version.

pg-install-ubuntu

#!/usr/bin/env bash
set -e

# Homebrew homebrew/versions was broken when I went to install postgres.
# This shell script just documents my install from source.

release=9.4.6
prefix=/usr/local/opt

mkdir -p $prefix
cd $prefix

curl -# https://ftp.postgresql.org/pub/source/v${release}/postgresql-${release}.tar.gz | tar -zxvf -
cd postgresql-$release

# If this fails you may need to install openssl with homebrew.
./configure --prefix=$prefix/postgresql --with-openssl --with-libs=/usr/local/lib --with-includes=/usr/local/include

# postgres
make
make install

# postgres-contrib
cd contrib
make
make install

cd $prefix
rm -rf postgresql-$release

echo "Add ${prefix}/postgresql/bin to \$PATH environment variable."