duplicity can not delete old backup

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http://stackoverflow.com – Good day I have a problem with deleting old backups. I have duplicity version 0.6.19 and ubuntu 12.10. I am create a full backup duplicity --no-encryption /home/honza/Downloads scp://[email protected]//home/honza/Documents then I change date +1 day a create second full backup duplicity --no-encryption full /home/honza/Downloads scp://[email protected]//home/honza/Documents Then I wont to delete old backup with duplicity --no-encryption remove-all-but-n-full 1 ==force scp://[email protected]//home/honza/Documents root@ubuntu:/# duplicity --no-encryption remove-all-but-n-f (HowTos)