xavier@zeus:~$ isql xavier xavier xavier -v
[28000][unixODBC]FATAL: no pg_hba.conf entry for host "127.0.0.1", user "xavier", database "xavier", SSL off
[ISQL]ERROR: Could not SQLConnect
# Database administrative login by Unix domain socket
local all postgres peer
# TYPE DATABASE USER ADDRESS METHOD
# "local" is for Unix domain socket connections only
# IPv4 local connections:
# IPv6 local connections: