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@(#)gcore.1 8.2 (Berkeley) 4/18/94
$FreeBSD: head/usr.bin/gcore/gcore.1 57670 2000-03-01 12:20:22Z sheldonh $
.Dd April 18, 1994 .Dt GCORE 1 .Os BSD 4.2 .Sh NAME .Nm gcore .Nd get core images of running process .Sh SYNOPSIS .Nm .Op Fl s .Op Fl c Ar core .Op Ar exec .Ar pid .Sh DESCRIPTION .Nm Gcore creates a core image of the specified process, suitable for use with .Xr gdb 1 . By default, the core is written to the file .Dq Pa core.<pid> . The process identifier, .Ar pid , must be given on the command line. If no executable image is specified, .Nm will use .Dq Pa /proc/<pid>/file .
p The options are: l -tag -width indent t Fl c Write the core file to the specified file instead of .Dq Pa core.<pid> . t Fl 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 .Xr kill 1 . .El .Sh FILES l -tag -width /var/log/messages -compact t Pa core.<pid> The core image. t Pa /proc/<pid>/file The executable image. .EL .Dp .Sh HISTORY .Nm Gcore appeared in x 4.2 . .Sh BUGS Context switches or paging activity that occur while .Nm is running may cause the program to become confused. For best results, use .Fl s to temporarily stop the target process.
p .Nm Gcore is not compatible with the original x 4.2 version.