4.3BSD - /usr/man/cat8/savecore.0

SAVECORE(8)                                                        SAVECORE(8)


NAME
       savecore - save a core dump of the operating system

SYNOPSIS
       /etc/savecore dirname [ system ]

DESCRIPTION
       Savecore  is  meant to be called near the end of the /etc/rc file.  Its
       function is to save the core dump of the system (assuming one was made)
       and to write a reboot message in the shutdown log.

       Savecore  checks  the  core  dump to be certain it corresponds with the
       current running unix.  If it does it saves the core image in  the  file
       dirname/vmcore.n  and  its  brother, the namelist, dirname/vmunix.n The
       trailing ".n" in the pathnames is replaced  by  a  number  which  grows
       every time savecore is run in that directory.

       Before  savecore  writes  out  a core image, it reads a number from the
       file dirname/minfree.  If the number of free kilobytes on the  filesys‐
       tem  which  contains  dirname is less than the number obtained from the
       minfree file, the core dump is not saved.  If the minfree file does not
       exist,  savecore  always writes out the core file (assuming that a core
       dump was taken).

       Savecore also logs a reboot message using facility LOG_AUTH  (see  sys���
       log(3)) If the system crashed as a result of a panic, savecore logs the
       panic string too.

       If the core dump was from a system other than /vmunix, the name of that
       system must be supplied as sysname.

FILES
       /vmunix        current UNIX

BUGS
       Can be fooled into thinking a core dump is the wrong size.


4th Berkeley Distribution        May 24, 1986                      SAVECORE(8)