To check the system calls and signals
coming into and going out of a
process use /usr/bin/truss.
i.e. truss pid
This tip generously supported by: bareddy_sm@yahoo.com
NOTE: All tips provided are USE AT YOUR OWN RISK. Tips are submitted
by various unix admins around the globe. UGU suggest you read and
test each tip in a non-volitile environment before placing into
production.