This is a small console tool to browse the PostgreSQL services file and connect to them with psql. Designed to be a quick-fix for the problem of there being "too many" servers to choose from.
By default, psql is just launched with a direct reference to the
service, and will connect based on that. However, if the hostaddr
field is specified and starts with !, a directed DNS lookup will be
done. That is, the hostname specified in host will be looked up
using the DNS server specified in hostaddr (minus the ! of
course).
This is particularly intended for environments where you cannot get the IP address of the server directly, and have to perform a DNS lookup which cannot be done using your primary DNS server. One common example of this is accessing a RDS PostgreSQL instance on AWS through a VPC.
This is just a very quick hack. Use at your own risk :)