RE: monitor for the existence of a file on the IFS

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You should be able to do the same thing that the Unix (and QShell cmd )
'tail' does. Open a file descriptor to the directory and then use select()
(I know, it's not a socket, but select() works on descriptors) and you'll
drop off the select() when any additions, deletions, changes, etc occur at
that directory level. At that point you can use opendir and iterate over the
directory to see what's changed.

I have example code of IFS directory iteration (recursively) in RPG here;

http://www.midrange.com/imho/phil/200010.shtml

--phil