NAME

brc, bcheckrc, rc, powerfail − system initialization shell scripts

SYNOPSIS

/etc/brc

/etc/bcheckrc

/etc/rc

/etc/powerfail

DESCRIPTION

Except for powerfail, these shell procedures are executed via entries in /etc/inittab by init(1M) when the system is changed out of SINGLE USER mode.  Powerfail is executed whenever a system power failure is detected. 

The brc procedure clears the mounted file system table, /etc/mnttab (see mnttab(4)), and loads any programmable micro-processors with their appropriate scripts.

The bcheckrc procedure performs all the necessary consistency checks to prepare the system to change into multi-user mode.  It will prompt to set the system date and to check the file systems with fsck(1M).

The rc procedure starts all system daemons before the terminal lines are enabled for multi-user mode.  In addition, file systems are mounted and accounting, error logging, system activity logging and the Remote Job Entry (RJE) system are activated in this procedure. 

The powerfail procedure is invoked when the system detects a power failure condition.  Its chief duty is to reload any programmable micro-processors with their appropriate scripts, if appropriate.  It also logs the fact that a power failure occurred. 

These shell procedures, in particular rc may be used for several run-level states.  The who(1) command may be used to get the run-level information. 

SEE ALSO

init(1M), shutdown(1M), who(1), inittab(4). 

Version 2.3  —  July 04, 1985