System dump defaults

There are default agents for producing system dumps when using the JVM.

Using the -Xdump:what option shows the following system dump agent:
-Xdump:system:
    events=gpf+abort,
    label=/home/user/core.%Y%m%d.%H%M%S.%pid.dmp,
    range=1..0,
    priority=999,
    request=serial
This output shows that by default a system dump is produced in these cases:
Attention: The JVM used to produce this output when a SIGSEGV signal was encountered. This behavior is no longer supported. Use the ABRT signal to produce dumps.


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