On Jul 10, 12:43 pm, Piet van Oostrum <p...@cs.uu.nl> wrote: > >>>>> Chris Rebert <c...@rebertia.com> (CR) wrote: > >CR> On Fri, Jul 10, 2009 at 9:13 AM, Bryan<bryanv...@gmail.com> wrote: > >>> I am trying to automate rsync to backup server A from server B. I > >>> have set up a private/public key between the two servers so I don't > >>> have to enter a password when using rsync. Running rsync manually > >>> with the following command works fine: > >>> rsync -av --dry-run -e "/usr/bin/ssh -i /home/bry/keys/brybackup.key" > >>> r...@10.0.45.67:/home/bry/jquery.lookup /home/bry/tmp > > >>> But when I try to do it with python, the subprocess simply returns the > >>> ssh -h output on stderr like I am passing some invalid syntax. What > >>> is wrong in my translation of rsync's -e command from shell to > >>> pythyon? > > >>> #! /usr/bin/python > >>> from subprocess import Popen, PIPE > >>> rsyncExec = '/usr/bin/ssh' > >>> source = 'r...@10.0.45.67:/home/bry/jquery.lookup' > >>> dest = '/home/bry/tmp' > >>> rshArg = '-e "/usr/bin/ssh -i /home/bry/keys/brybackup.key"' > >>> args = [rsyncExec, '-a', '-v', '--dry-run', rshArg, source, dest] > >CR> Like many problems involving the subprocess module, I think you've > >CR> tokenized the arguments incorrectly. Try: > >CR> rshArg = '"/usr/bin/ssh -i /home/bry/keys/brybackup.key"' > >CR> args = [rsyncExec, '-av', '--dry-run', '-e', rshArg, source, dest] > >CR> Note that the -e switch and its operand are separate arguments for the > >CR> purposes of POSIX shell tokenization. > > I think you should have only one kind of quotes in rshArg: > rshArg = "/usr/bin/ssh -i /home/bry/keys/brybackup.key" > > I haven't tried it, however, but this is just how Unix works. > -- > Piet van Oostrum <p...@cs.uu.nl> > URL:http://pietvanoostrum.com[PGP 8DAE142BE17999C4] > Private email: p...@vanoostrum.org
I tried removing the internal quotes, and splitting '-e' from the other arguments. I still get the same ssh -h output however: rshArg = '/usr/bin/ssh -i /home/bry/keys/brybackup.key' args = [rsyncExec, '-a', '-v', '--dry-run', '-e', rshArg, source, dest] p = Popen(args, stdout=PIPE, stderr=PIPE) -- http://mail.python.org/mailman/listinfo/python-list
