CORE(5) CORE(5) NAME core - format of core image file DESCRIPTION UNIX writes out a core 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 core image is called `core' and is written in the process's working directory (provided it can be; normal access controls apply). The first 1024 bytes of the core image are a copy of the system's per-user data for the process, including the regis- ters as they were at the time of the fault; see the system listings for the format of this area. The remainder repre- sents the actual contents of the user's core area when the core image was written. If the text segment is write- protected and shared, it is not dumped; otherwise the entire address space is dumped. In general the debugger adb(1) is sufficient to deal with core images. SEE ALSO adb(1), signal(2)