You can use 2!:0 to replace winexec, I think. I don't know whether winexec implements the 'from' keyword you are using there, or if that's a 7z thing, and I don't know what it does. But if you need to change the current directory for 7z to work properly, you can use 1!:44 for that.
I hope this helps, -- Raul On Mon, Mar 22, 2021 at 8:04 AM Ewart Shaw <[email protected]> wrote: > > 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 ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
