UPDATE

UPDATE(8)                  Linux Programmer's Manual                 UPDATE(8)



NAME
       update - periodically flush filesystem buffers.

SYNOPSIS
       update [ options ]

DESCRIPTION
       The update daemon flushes the filesystem buffers at a regular interval.
       It has two modes of operation. By default it will wake up every 5  sec-
       onds  and  flush  some  dirty buffers. Newer kernels do not need a user
       space update daemon.  This is automatically detected  by  update  which
       will  simply  exit. The traditional behavior of waking up every 30 sec-
       onds to call sync(2) can be forced with an option if it is deemed  nec-
       essary.

       The following options are accepted by update:

       -S, --use-sync
              Use the traditional behavior of calling sync(2).

       -s, --sync-interval secs
              If  using  sync,  wake  up  and  call it every secs seconds. The
              default is every 30 seconds.

       -f, --flush-interval secs
              Unless using sync, wake up and flush  some  buffers  every  secs
              seconds. The default is every 5 seconds.

       --help Print  a usage message on standard output and exit successfully.

       --version
              Print version information on standard output then exit  success-
              fully.

       update  should be started as early as possible during the boot process.
       If it is invoked by a non-privileged user, it calls sync and exits.

SEE ALSO
       init(8), sync(2), sync(8)

AUTHOR
       Torsten Poulin <torsten AT diku.dk>



Linux 2.2                        May 24, 1999                        UPDATE(8)