Where is core file with abrt-hook-cpp installed?

I posted this question to StackOverflow a little while ago, but just now found this community, and felt like this is at least an equally appropriate site for this question: I've been led to understand that if abrt-ccpp.service is installed on a Linux PC, it supersedes/overwrites (I've read both, not sure which is true) the file /proc/sys/kernel/core_pattern, which otherwise specifies the location and filename pattern of core files. **Question**: When I execute systemctl, why does abrt-ccpp.service report exited under the SUB column? I don't understand the combination of active and exited: is the service "alive"/active/running or not? > systemctl UNIT LOAD ACTIVE SUB abrt-ccpp.service loaded active exited ... **Question**: Where are core files generated? I wrote this program to generate a SIGSEGV: #include int main(int argc, char* argv[], char* envz[]) { int* pInt = NULL; std::cout g++ main.cpp > ./a.out Segmentation fault (core dumped) But I cannot locate where the core file is generated. **What I have tried**: - Looked in the same directory as my main.cpp. Core file is not there. - Looked in /var/tmp/abrt/ because of the following comment in /etc/abrt/abrt.conf. Core file is not there. ... # Specify where you want to store coredumps and all files which are needed for # reporting. (default:/var/tmp/abrt) # # Changing dump location could cause problems with SELinux. See man_abrt_selinux(8). # #DumpLocation = /var/tmp/abrt ... - Looked in /var/spool/abrt/ because of a comment at this link . Core file is not there. - Edited /etc/abrt/abrt.conf and uncommented and set DumpLocation = ~/foo which is an existing directory. Followed this by restarting abrt-hook-ccpp (sudo service abrt-ccpp restart) and rerunning a.out. Core file was not generated in ~/foo/ - Verified that ulimit -c reports unlimited. I am out of ideas of what else to try and where else to look. In case helpful, this is the content of my /proc/sys/kernel/core_pattern: > cat /proc/sys/kernel/core_pattern |/usr/libexec/abrt-hook-ccpp %s %c %p %u %g %t e Can someone help explain how the abrt-hook-ccpp service works and where it generates core files? Thank you.