Back in the days of J6 and 11!:0 to interact with MS Windows, I wrote my own backup system calling 7-zip from J. It would check if any files in 200+ directory trees had been updated since the corresponding .7z backup file was last updated, and if so then it would update the corresponding .7z backup file.
The system still works pretty efficiently and has saved me a couple of times when computers died. However I want if possible to convert all my remaining legacy J programs to J9. The relevant J6 command is in effect 11!:0 'winexec "7z.exe a -r correspondingbackup.7z from updatedtreeroot"' I can't see how to do this in J9; is it possible? Sorry if that's a dumb question - for various reasons (most recently long covid) I've fallen behind with J developments. Many thanks, Ewart -- Ewart Shaw [J.E.H.Shaw] http://www.ewartshaw.com [Work in Progress] [email protected] http://www.facebook.com/ewart.shaw 3 ((4&({*.(=+/))++/=3:)@([:,/0&,^:(i.3)@|:"2^:2))&.>@]^:(i.@[) <#:3 6 2 ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
