Haven't done this myself, but I suspect that you can do that with
SDSF/IOF/other spool browsers.
Why not simply MOD the file rather than copying to a NEW file?
--
For IBM-MAIN subscribe / signoff / archive access instructions,
Hello Group,
Is it possible to capture log from any running address space on every
regular interval and keep appending to these logs to output dataset using
REXX.
for example: I run my rexx at 1 AM and it capture logs generated upto 1 AM
and write into output dataset . Then I run this rexx at 2