Nobumi, If you want a mirror forget about backup and perl, and go for rsync. Just say : do shell script "rsync -a --delete 'the source' 'the dest'", it's killer. Many options, it's a pleasure. FWIW, as you know we (quomodo.com) use intensively the features of Smile and Satimage osax, but we are dropping "backup". Emmanuel Satimage-software On Jun 16, 2011, at 2:46 PM, Nobumi Iyanaga wrote: > Hello Mark and Emmanuel, > > On Jun 13, 2011, at 9:27 PM, Mark Lively wrote: > >> If you have the satimage scripting addition installed it is simply. >> >> backup folder1 onto folder2 level 1 >> >> It is available at http://www.satimage.fr/software/en/ > > I am trying to use this very useful and powerful command. It is very > good -- but unfortunately, it does not delete files in the > destination folder, when the corresponding files are deleted in the > source folder. I am writing another laborious perl script to do this > part of the work... > > It would help so much if "backup" in satimage scripting addition > could do that... > > Best regard, > > Nobumi Iyanaga > Tokyo, > Japan