#!/bin/bash
set -e

running_pgsql=`pgrep -a postgres | grep bin/postgres | awk '{print $2}'`

[[ -z $running_pgsql ]] && echo could not determine running_pgsql && exit 1

num_lines=`echo "$running_pgsql" | wc -l`
(( num_lines > 1 )) && echo more that one pgsql running && exit 1
unset num_lines

echo -n "$host: "
$running_pgsql --version