GCORE(1) BSD General Commands Manual GCORE(1)NAMEgcore — get core images of running process
SYNOPSISgcore [-s] [-c core] exec pid
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
-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
core.<pid> The core image.
Gcore appeared in 4.2BSD.
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 February 21, 2018 4.2 Berkeley Distribution