How to generate a core dump in Linux on a segmentation fault?

Question

I have a process in Linux that's getting a segmentation fault. How can I tell it to generate a core dump when it fails?

Answer 1

To generate a core dump when a Linux process crashes with Segmentation fault, you need to make sure core dumps are enabled for the shell/service and that Linux knows where to write them.

1. Enable core dumps for current shell

Run:

ulimit -c unlimited

Check it:

ulimit -c

Expected output:

unlimited