SYNC(8) BSD System Manager's Manual SYNC(8)

NAME
     ssyynncc - force completion of pending disk writes (flush cache)

SYNOPSIS
     ssyynncc

DESCRIPTION
     SSyynncc can be called to insure that all disk writes have been completed
     before the processor is halted in a way not suitably done by reboot(8) or
     halt(8).  Generally, it is preferable to use reboot or halt to shut down
     the system, as they may perform additional actions such as resynchroniz-
     ing the hardware clock and flushing internal caches before performing a
     final ssyynncc.

     SSyynncc utilizes the sync(2) function call.

SEE ALSO
     sync(2), fsync(2), halt(8), reboot(8), update(8)

HISTORY     A ssyynncc command appeared in Version 6 AT&T UNIX.

4th Berkeley Distribution        May 31, 1993        4th Berkeley Distribution