CORE(5) — Unix Programmer’s Manual
NAME
core − format of memory image file
DESCRIPTION
UNIX writes out a memory image of a terminated process when any of various errors occur. See signal(2) for the list of reasons; the most common are memory violations, illegal instructions, bus errors, and user-generated quit signals. The memory image is called ‘core’ and is written in the process’s working directory (provided it can be; normal access controls apply).
In general the debugger adb(1) is sufficient to deal with core images.
SEE ALSO
7th Edition