core.<pid>
the core image
gcore1
Get core images of running process
Usage
gcore [-f]
[-k]
[-c
core]
[executable]
pid
Overview
The gcore utility creates a core image of the specified process, suitable for use with gdb(1) (ports/devel/gdb). By default, the core is written to the file “core.<pid>”. The process identifier, pid, must be given on the command line.
The following options are available:
-
-c -
Write the core file to the specified file instead of “core.<pid>”.
-
-f -
Dumps all available segments, excluding only malformed and undumpable segments. Unlike the default invocation, this flag dumps mappings of devices which may invalidate the state of device transactions or trigger other unexpected behavior. As a result, this flag should only be used when the behavior of the application and any devices it has mapped is fully understood and any side effects can be controlled or tolerated.
-
-k -
Use the ptrace(2) PT_COREDUMP kernel facility to write the core dump, instead of reading the process' memory and constructing the dump file in
gcoreitself. This is faster, and the dump is written by the same kernel code that writes core dumps upon fatal signals.
Files
Releases
87 releases since FreeBSD 2.0.5-RELEASE; the text changed 45 times.
- 2.0.5–2.1.7.1
- 2.2.2
- 2.2.5–2.2.9
- 3.0–3.4
- 3.5–3.5.1
- 4.0–4.2
- 4.3
- 4.4–4.6.2
- 4.7–4.11
- 5.0–5.2.1
- 5.3–6.3
- 6.4
- 7.0
- 7.1
- 7.2
- 7.3
- 7.4
- 8.0
- 8.1
- 8.2
- 8.3
- 8.4
- 9.0
- 9.1
- 9.2
- 9.3
- 10.0
- 10.1
- 10.2
- 10.3
- 10.4
- 11.0
- 11.1
- 11.2
- 11.3
- 11.4
- 12.0
- 12.1
- 12.2
- 12.3
- 12.4
- 13.0
- 13.1–13.2
- 13.3–13.5
- 14.0–14.5
- 15.0–16.0
-f since FreeBSD 8.2-RELEASE;
-k since FreeBSD 13.1-RELEASE.
-s until FreeBSD 11.4-RELEASE.