When modifying postgresql.conf (or, now, pg_hba.conf) one must send a
SIGHUP to the postmaster to get it to pay attention. Seems like it'd
be nice if pg_ctl had an option to do that, rather than having to muck
about with looking in ps output. Any objections? What should the
option be called? "pg_ctl hup" is short but maybe too Unix-sysadminy;
perhaps something like "pg_ctl reconfig"?
regards, tom lane