Capturing vacuum output

PostgreSQL: 7.3.4
Platform: SunOS 5.9 Generic_112233-07 sun4u sparc SUNW,Ultra-250

We plan to run vacuumdb nightly on our PostgreSQL cluster (which may be
excessive--we welcome opinions/insights on vacuum scheduling); we want to
run vacuum in verbose mode, for our own statistical analysis/review--but
we're having trouble capturing the verbose output; when we do a simple pipe
to a file--

vacuumdb -a -f -z -v | vaclog.log

all that gets captured is the backend database commands--VACUUM <dbname>
etc; thinking that the verbose output was going to something besides
stdout, we tried

vacuumdb -a -f -z -v 2> ${pg_log}/vaclog.log

and got the error message: "cannot vacuum all databases and a specific one
at the same time";
To what I/O stream does the verbose output get written, and how can we
capture it?

--

David Rickard
Software Engineer
The GTS Companies
A TechBooks Company

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