UPDATE(8)UPDATE(8)NAMEupdate - periodically write the buffer cache to disk
SYNOPSISupdateEXAMPLESupdate & # Start a process that flushes the cache
DESCRIPTION
When the system is booted, update is started up in the background from
/etc/rc to issue a SYNC system call every 30 sec.
SEE ALSOboot(8).
UPDATE(8)