Garry Saddington wrote:
I am using zope on windows with an external python method to backup my database. I am struggling to run the following command:

pg_dump.exe database > file

I have tried using os.popen - no luck
and also subprocess.Popen.

eg:
import subprocess
subprocess.Popen(['c:/dir/dir/pg_dump.exe','database','>','c:/dir/dir/output file'])

The command string works perfectly in a terminal. Does anyone know how I should be doing this? I get no errors or traceback when I try the method through Zope.

regards
garry

the redirect operation '>' is done by cmd.exe. I assume popen is directly spawing pg_dump, but pg_dump does not know the command line argument >.

you need to run:  'cmd.exe /c pg_dump database > out.txt'

(is it /c or /k, I always get them confused)

-Andy

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