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SAVECORE(8)		FreeBSD	System Manager's Manual		   SAVECORE(8)

     savecore -- save a	core dump of the operating system

     savecore [-cfvz] [-N system] directory

     savecore copies the currently running kernel and its associated core dump
     into directory, and enters	a reboot message and information about the
     core dump into the	system log.

     The options are as	follows:

     -c	     Clears the	dump, so that future invocations of savecore will ig-
	     nore it.

     -f	     Forces a dump to be taken even if the dump	doesn't	appear correct
	     or	there is insufficient disk space.

     -N	system
	     Use system	as the kernel instead of the default /bsd.

     -v	     Prints out	some additional	debugging information.

     -z	     Compresses	the core dump and kernel (see compress(1)).

     savecore checks the core dump in various ways to make sure	that it	is
     current and that it corresponds to	the currently running system.  If it
     passes these checks, it saves the core image in directory/bsd.#.core and
     the system	in directory/bsd.# (or in directory/bsd.#.core.Z and
     directory/bsd.#.Z,	respectively, if the -z	option is used).  The "#" is
     the number	from the first line of the file	directory/bounds, and it is
     incremented and stored back into the file each time savecore successfully

     savecore also checks the available	disk space before attempting to	make
     the copies.  If there is insufficient disk	space in the filesystem	con-
     taining directory,	or if the file directory/minfree exists	and the	number
     of	free kilobytes (for non-superusers) in the filesystem after the	copies
     were made would be	less than the number in	the first line of this file,
     the copies	are not	attempted.

     If	savecore successfully copies the kernel	and the	core dump, the core
     dump is cleared so	that future invocations	of savecore will ignore	it.

     savecore is meant to be called near the end of the	initialization file
     /etc/rc (see rc(8)).

     /bsd    current kernel

     compress(1), crash(8), syslogd(8)

     The savecore command appeared in 4.1BSD.

     The minfree code does not consider	the effect of compression.

FreeBSD	13.0			August 14, 2013			  FreeBSD 13.0


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