gcore or generate-core-file command?

[Chris Markle]

Hi - I am currently using some moldy oldy versions of gdb that do not appear
to have a way to generate core files (yes I know I should upgrade). I get
the impression that newer gdb versions have a gcore (or generate-core-file?)
command. Is this the case or is this somehow limited to Linux or some subset
of platforms (my interest here is generating cores with gdb on Solaris).
I've looked in the gdb doc and can't find refs to this ability. Is this
possible? Which version of gdb did this shwo up in? Thx in advance. Chris