Segmentation fault

SIGSEGV is a bad memory access

The process dereferenced something invalid. It is a bug in the program or a mismatch between it and its libraries.

ulimit -c unlimited
apt-get install gdb
gdb ./binary core

dmesg -T | tail -20

Replacing a shared library or executable while it is mapped produces this. Upgrade during a restart window instead.

Scope: failure mode: SIGSEGV from a shell script, and where to look.

CliHelper documents failure modes of third-party command line tools. No software is stored or distributed here.