AUSAM/doc/man/man8/update.8

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.th UPDATE VIII 11/1/73
.sh NAME
update \*- periodically update the super block
.sh SYNOPSIS
.bd update
.sh DESCRIPTION
.it Update
is a program that executes
the
.it sync
primitive every 30 seconds,
and checkpoints the in-core limits structures every 15 minutes.
This insures that the file system
is fairly up to date in case of a crash.
.it Update
is
.it exec\c
\'ed by
.it init
at multi-user startup time.
See sync (II) for details.
.sh FILES
/etc/lnodes.chkpt
.sh "SEE ALSO"
sync (II)
.br
init (VIII),
shutdown (VIII),
AUSAM (VIII)
.sh BUGS
With
.it update
running,
if the CPU is
halted just as
the
.it sync
is executed,
a file system can be damaged,
so use
.it shutdown
(VIII) !