On Aug 6, 2019, at 5:35 AM, Pete Biggs <pete at biggs.org.uk> wrote: > > On Tue, 2019-08-06 at 05:27 -0600, Warren Young wrote: >> On Aug 5, 2019, at 6:57 PM, Fred Smith <fredex at fcshome.stoneham.ma.us> wrote: >>> no core file (yes, ulimit is configured) >> >> That’s nowhere near sufficient. To restore classic core file dumps >> on CentOS 7, you must: >> > > I was under the impression that a SIGKILL doesn't trigger a core dump > anyway. It just kills the process. True; you need SIGABRT to force a core to drop. I posted that because if all he did was set the shell’s ulimit value, the lack of core files proves nothing, because there’s half a dozen other things that could be preventing them from dropping.