GCORE (1) | General commands | Unix Manual Pages | :man▋
gcore - get core images of running process
gcore [-s] [-c core] [executable] pid
The gcore utility 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>". The process identifier, pid, must be given on the command line. If no executable image is specified, gcore will use "/proc/<pid>/file".
The following options are available:
|-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). |
| core.<pid> || the core image |
| /proc/<pid>/file |
| || the executable image |
A gcore utility appeared in BSD 4.2 .
Context switches or paging activity that occur while gcore is running may cause the program to become confused. For best results, use -s to temporarily stop the target process.
The gcore utility is not compatible with the original BSD 4.2 version.
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