Re: How to check postgres running or not ?

Tom Lane wrote:
> At one time there was discussion of writing a "pg_ping" utility program
> to do exactly this, but it still hasn't got done. You can fake it to
> some extent by just running "psql -l >/dev/null" and checking the exit
> code, but this does require supplying a valid username and possibly a
> password (because psql's exit code doesn't distinguish "could not
> connect" from authentication errors).
>
> BTW, "pg_ctl status" doesn't answer this need because it only looks for
> a postmaster.pid file, it doesn't attempt to verify that the postmaster
> is really alive.

Is improving this a TODO item for pg_ctl?

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