osx man page for update

Query: update

OS: osx

Section: 8

Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar

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

NAME
update -- flush internal filesystem caches to disk frequently
SYNOPSIS
update
DESCRIPTION
The update utility has been incorporated into launchd(8). It historically helped protect the integrity of disk volumes by flushing volatile cached filesystem data to disk at thirty second intervals using the sync(2) function call.
SEE ALSO
sync(2), fsck(8), launchd(8), sync(8)
BUGS
It is possible on some systems that a sync occurring simultaneously with a crash may cause file system damage. See fsck(8).
HISTORY
An update utility appeared in Version 6 AT&T UNIX.
BSD
August 18, 2008 BSD
Related Man Pages
syncer(4) - debian
sync(8) - freebsd
syncfs(2) - php
syncfs(2) - mojave
syncfs(2) - xfree86
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