How can I do a ps on /usr/crash/vmcore?

[puder at burdvax.UUCP]

I believe you need to do
% ps -axlk /usr/crash/vmcore.6

(Full pathname is required; ps does chdir("/dev") before opening files).  If
you have the source, try looking through it for references to argv.  On our
4.1bsd system, there are three optional arguments to ps that default to:
ps - /vmcore /dev/drum /vmunix

Karl Puder   burdvax!puder   SDC-aBC, R & D   Paoli, Pa.   (215)648-7555