GCORE(1) BSD General Commands Manual GCORE(1)NAME
gcore — get core images of running process
SYNOPSIS
gcore [-s] [-c core] exec pid
DESCRIPTION
Gcore creates a core image of the specified process, suitable for use
with gdb(1). By default, the core is written to the file “core.<pid>”.
Both the executable image, exec, and the process identifier, pid, must be
given on the command line.
The options are:
-c Write the core file to the specified file instead of
“core.<pid>”.
-s Stop the process while gathering the core image, and resume it
when done. This guarantees that the resulting core dump will be
in a consistent state. The process is resumed even if it was
already stopped. The same effect can be achieved manually with
kill(1).
FILES
core.<pid> The core image.
HISTORY
Gcore appeared in 4.2BSD.
BUGS
Context switches or paging activity that occur while gcore is running may
cause the program to become confused. For best results, use -s to tempo‐
rarily stop the target process.
Gcore is not compatible with the original 4.2BSD version. In particular,
4.4BSD requires the exec argument.
4.2 Berkeley Distribution April 23, 2024 4.2 Berkeley Distribution
