[Duplicity-talk] Error running from cron.

[Mark Price]

Hi Folks,

If I run duplicity 0.4.3.RC12 from my bash shell as root everything 
works as expected. If I run from cron either using the following syntax

0 0 * * * export PASSPHRASE="the heart of a saturday night"; 
/usr/bin/duplicity /home/mprice 
scp://backup/duplicity-backups/ravenwood/home/mprice

or

0 0 * * * /usr/local/bin/dup

where /usr/local/bin/dup contains

#!/bin/bash
export PASSPHRASE="the heart of a saturday night"
/usr/bin/duplicity  /home/mprice 
scp://backup/duplicity-backups/ravenwood/home/mprice

I get the following error:

Traceback (most recent call last):
  File "/usr/bin/duplicity", line 378, in ?
    if __name__ == "__main__": main()
  File "/usr/bin/duplicity", line 354, in main
    globals.archive_dir).set_values()
  File "/usr/lib/python2.4/site-packages/duplicity/collections.py", line
416, in set_values
    backend_filename_list = self.backend.list()
  File "/usr/lib/python2.4/site-packages/duplicity/backends.py", line 483,
in list
    l = self.run_sftp_command(commandline, commands).split('\n')[1:]
  File "/usr/lib/python2.4/site-packages/duplicity/backends.py", line 436,
in run_sftp_command
    child.sendeof()
  File "/usr/lib/python2.4/site-packages/pexpect.py", line 818, in sendeof
    old = termios.tcgetattr(fd) # remember current state
termios.error: (22, 'Invalid argument')

Any ideas?