Nadležni update proces | |||
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UPDATE( BSD System Manager's Manual UPDATE( NAME update -- flush internal filesystem caches to disk frequently SYNOPSIS update [normal_interval [save_energy_interval]] DESCRIPTION The update command helps protect the integrity of disk volumes by flush- ing volatile cached filesystem data to disk at thirty second intervals. Update uses the sync(2) function call to do the task. The normal_inter- val and save_energy_interval can be used to set the sync(2) interval in seconds of the normal case and the case where the computer is trying to save energy. Update is commonly invoked at startup time by rc( when the system goes multi-user. SEE ALSO sync(2), fsck(, init(, rc(, sync( BUGS It is possible on some systems that a sync occurring simultaneously with a crash may cause file system damage. See fsck(. HISTORY An update command appeared in Version 6 AT&T UNIX. BSD April 19, 1994 BSD (END) kaj vev pa ne bi vedu |
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