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1.\""Copyright (c) 2001 Apple Computer, Inc. All Rights Reserved.
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15.Dd March 18, 2002
16.Dt CORE 5
17.Os
18.Sh NAME
19.Nm core
20.Nd memory image file format
21.Sh SYNOPSIS
22.In sys/param.h
23.Sh DESCRIPTION
24A small number of signals which cause abnormal termination of a process
25also cause a record of the process's in-core state to be written
26to disk for later examination by one of the available debuggers.
27(See
28.Xr sigaction 2 . )
29This memory image is written to a file named by default
30.Nm core.pid
31in the
32.Nm /cores
33directory;
34provided the terminated process had write permission in the directory,
35and the directory existed.
36.Pp
37The maximum size of a core file is limited by
38.Xr setrlimit 2 .
39Files which would be larger than the limit are not created.
40.Pp
41The core file consists of the
42.Pa Xr Mach-O 5
43header as described in the
44.Aq Pa sys/loader.h
45file.
46The remainder of the core
47file consists of various sections described in the
48.Xr Mach-O 5
49header.
50.Sh SEE ALSO
51.Xr gdb 1 ,
52.Xr setrlimit 2 ,
53.Xr sigaction 2 ,
54.Xr Mach-O 5,
55.Xr sysctl 8
56.Sh HISTORY
57A
58.Nm
59file format appeared in
60.At v6 .