Core dump

Where’re those known from the university times core dumps on Linux? How can I discover a really rear bug in the server daemon?

Well, it appeared that they’re just turned off for ordinary users in the /etc/profile:

# No core files by default
ulimit -S -c 0 > /dev/null 2>&1

Really, why a user should know about such a weird thing? Now I always reset the ulimit before starting an application being debugged.