> cat "$LOG" | gzip > "$LOG.old.gz" > "$LOG" Don't have access to my machine at the moment, but try adding the '-c' options to gzip (e.g. gzip -c ...) -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple