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SAVECORE(8) FreeBSD System Manager's Manual SAVECORE(8)
NAME
savecore -- save a core dump of the operating system
SYNOPSIS
savecore -c
savecore -C [-v] [directory device]
savecore [-fkvz] [directory [device ...]]
DESCRIPTION
The savecore utility copies a core dump into directory, or the current
working directory if no directory argument is given, and enters a reboot
message and information about the core dump into the system log.
The options are as follows:
-C Check to see if a dump exists, and display a brief message to
indicate the status. An exit status of 0 indicates that a dump
is there, 1 indicates that none exists. This option is compati-
ble only with the [-v] option.
-c Clear the dump, so that future invocations of savecore will
ignore it.
-f Force a dump to be taken even if either the dump was cleared or
if the dump header information is inconsistent.
-k Do not clear the dump after saving it.
-v Print out some additional debugging information. Specify twice
for more information.
-z Compress the core dump and kernel (see gzip(1)).
The savecore utility looks for dumps on each device specified by the
device argument(s), or on each device in /etc/fstab marked as ``dump'' or
``swap''. The savecore utility checks the core dump in various ways to
make sure that it is complete. If it passes these checks, it saves the
core image in directory/vmcore.# and information about the core in
directory/info.# 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 runs.
The savecore utility also checks the available disk space before attempt-
ing to make the copies. If there is insufficient disk space in the file
system containing directory, or if the file directory/minfree exists and
the number of free kilobytes (for non-superusers) in the file system
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.
The savecore utility is meant to be called near the end of the initial-
ization file /etc/rc (see rc(8)).
SEE ALSO
gzip(1), getbootfile(3), dumpon(8), syslogd(8)
HISTORY
The savecore utility appeared in 4.1BSD.
BUGS
The minfree code does not consider the effect of compression or sparse
files.
FreeBSD 6.2 February 24, 2005 FreeBSD 6.2
Man(1) output converted with
man2html and wrapped by fishsponge
This page was generated on Wed Sep 19 20:35:58 BST 2007
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