Configure file name of core dumps

Description

To set the runtime status of the kernel.core_uses_pid kernel parameter, run the following command:

$ sudo sysctl -w kernel.core_uses_pid=0

To make sure that the setting is persistent, add the following line to a file in the directory /etc/sysctl.d:

kernel.core_uses_pid = 0

Rationale

The default coredump filename is core. By setting core_uses_pid to 1, the coredump filename becomes core.PID. If core_pattern does not include %p (default does not) and core_uses_pid is set, then .PID will be appended to the filename. When combined with kernel.core_pattern = "" configuration, it is ensured that no core dumps are generated and also no confusing error messages are printed by a shell.