gistfile1.txt

$ ulimit -a
-t: cpu time (seconds)              unlimited
-f: file size (blocks)              unlimited
-d: data seg size (kbytes)          unlimited
-s: stack size (kbytes)             8192
-c: core file size (blocks)         0
-m: resident set size (kbytes)      unlimited
-u: processes                       31178
-n: file descriptors                1024
-l: locked-in-memory size (kbytes)  65536
-v: address space (kbytes)          unlimited
-x: file locks                      unlimited
-i: pending signals                 31178
-q: bytes in POSIX msg queues       819200
-e: max nice                        0
-r: max rt priority                 0
-N 15: rt cpu time (microseconds)   unlimited

$ cat /proc/sys/kernel/core_pattern

$ sudo sed -i '$akernel.core_pattern=/var/crash/%E.%p.%t.%s\n' /etc/sysctl.conf && sysctl -p # customize core dump path

$ cat /etc/systemd/coredump.conf # if systemd-coredump daemon is running on your system

$ ls -ltr /var/lib/systemd/coredump # systemd-coredump would compress core dump as lz4

$ lz4 -d core.xxxxx.lz4

$ sudo gdb -core core.xxxxx