UPDATE
Section: Maintenance Commands (8)
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BSD mandoc
NAME
update
- flush internal filesystem caches to disk frequently
SYNOPSIS
update
DESCRIPTION
The
update
command helps protect the integrity of disk volumes
by flushing
voliatile cached filesystem data
to disk at thirty second intervals.
Update
uses the
sync(2)
function call to do the task.
Update
is commonly invoked at startup time by
rc(8)
when the system goes multi-user.
SEE ALSO
sync(2),
fsck(8),
init(8),
rc(8),
sync(8)
BUGS
It is possible on some systems, that a
syn
occuring simultaneously with a crash may cause
file system damage. See
fsck(8).
HISTORY
An
update
command appeared in
AT&T System
v6 .
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- SEE ALSO
-
- BUGS
-
- HISTORY
-
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