/sbin/bcheckrc
The brc script performs administrative tasks related to file sharing. The functionality of brc has been incorporated into other startup routines, and is no longer executed by /etc/inittab. It is kept for compatibility reasons.
After bcheckrc has executed, init checks for the initdefault value in /etc/inittab. This tells init in which run level to place the system. If, for example, initdefault is set to 2, the system will be placed in the multi-user state via the rc2 procedure.
Note that bcheckrc should always be executed before brc. Also, these shell procedures may be used for several run-level states.