Add section on ulimit

Author: bahildebrand

_posts/2025-02-13-linux-coredumps-part-1.md

@@ -75,7 +75,19 @@ CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
 These settings will enable the kernel to generate coredumps, as well as set the
 default mappings that are present in the coredump. `man core`[^man_core]
 provides a good overview of the options available to you when configuring
-coredumps.
+coredumps. It's worth noting that these options are enabled for most distros by
+default.
+
+In addition the kernel configuration, you'll need to set the `ulimit` for the
+process that you want to capture a coredump for. The `ulimit` command is used to
+set the resource limits for a process. The `core` resource limit is the one
+we're interested in. This sets the maximum size of a coredump that can be
+generated by a process. To make things easy, you can set it to unlimited with
+the following command:
+
+```bash
+ulimit -c unlimited
+```
 
 ### `core_pattern`