BRC(ADM)                             UNIX System V



     Name
          brc, bcheckrc - system initialization procedures


     Syntax
          /etc/bcheckrc [ -a ]

          /etc/brc


     Description
          These  shell  procedures  are  executed   via   entries   in
          /etc/inittab  by  init(M)  whenever the system is booted (or
          rebooted).

          First, the bcheckrc procedure checks the status of the  root
          file  system.   If  the root file system is found to be bad,
          bcheckrc repairs it.  When invoked with  the  -a  (autoboot)
          flag,  bcheckrc will run without operator intervention. init
          calls bcheckrc with the -a flag when the system autoboots.

          Then, the brc  procedure  clears  the  mounted  file  system
          table,  /etc/mnttab,  and  puts  the entry for the root file
          system into the mount table.

          After these two procedures have executed,  init  checks  for
          the  initdefault  value in /etc/inittab.  This tells init in
          which run level to place the system.  Since  initdefault  is
          initially  set to 2, the system will be placed in the multi-
          user state via the /etc/rc2 procedure.

          Note that bcheckrc should always  be  executed  before  brc.
          Also,  these  shell  procedures may be used for several run-
          level states.


     See Also
          boot(HW), fsck(ADM), init(M), rc2(ADM), shutdown(ADM)


     (printed 2/15/90)                                   BRC(ADM)