In article <[EMAIL PROTECTED]>, James Taylor <[EMAIL PROTECTED]> wrote: > On Sun 24 Mar, Richard Torrens (RiscOS) wrote: > > > > It'd not strictly a Perl problem but I'm doing it in Perl...
> It's not a Perl problem at all! That depends if I can solve it. It also depends on how Perl's file operations interface with RISCOS. Your comment makes me think that interface is pretty complete? > > The problem: how can I tell when Blackhole has finished expiry > > and is ready to accept the previous backups? > I don't know how Blackhole structures its rubbish directory but > perhaps you can look to see how it does it. Your backup program > could then create an empty file in a position that Blackhole's > expiry process will get to last of all. Then all your program > needs to do is poll for the existence of that marker file and > when it is gone you will know that Blackhole has finished. > Of course, you will probably need to time stamp the marker file > to ensure that it will be expired correctly. I had not thought of that - but Blackhole single tasks during deletions. Whether a networked command can check the existemce of a file, I don't know. Trials I have made along these lines throw up an error window 'Please insert disc etc.' -- ------------------------------------------------------------------------- Richard Torrens 4QD manufacture speed controllers for battery electric motors. www sites http://www.4QD.co.uk http://www.4QDtec.com http://www.4QD.org All email addresses are copyright. Resale or use on any lists is expressly forbidden ---------- We use a RISC PC 32 bit RISC computer ----------------
