CORE(5) File Formats Manual 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 registers as they were at
the time of the fault; see the system listings for the format of this area. The remainder represents 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)CORE(5)
Check Out this Related Man Page
GCORE(1) General Commands Manual GCORE(1)NAME
gcore - get core image of running process
SYNOPSIS
gcore [-s][-c core] pid
DESCRIPTION
gcore creates a core image of each specified process, suitable for use with adb(1). By default the core image is written to the file
<pid>.core.
The options are:
-c Write the core file to the specified file instead of <pid>.core.
-s Stop the process while creating the core image and resume it when done. This makes sure that the core dump will be in a consistent
state. The process is resumed even if it was already stopped. Of course, you can obtain the same result by manually stopping the
process with kill(1).
The core image name was changed from core.<pid> to <pid>.core to prevent matching names like core.h and core.c when using programs such as
find(1).
FILES
<process-id>.core The core image.
BUGS
If gcore encounters an error while creating the core image and the -s option was used the process will remain stopped.
Swapped out processes and system processes (the swapper) may not be gcore'd.
4.2 Berkeley Distribution April 15, 1994 GCORE(1)
:confused:
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