signal handling

Is ther a signal handling model in R? similar to Perl's %SIG hash.
I want to do fast clean up in my R code before exit when a kill signal
is issued.

I don't know Perl's %SIG hash.  However, there are several things you 
can do:  the on.exit() function lets a function do cleanup, and there 
are various hooks available (see ?setHook), and finalizers (see 
?reg.finalizer) for some kinds of objects.

Duncan Murdoch