sync(1M)                       DG/UX R4.11MU05                      sync(1M)


NAME
       sync - update the super-block

SYNOPSIS
       sync

DESCRIPTION
       Sync executes sync(2), causing file system information in memory to
       be written to disk. By issuing this command before halting the
       system, you can ensure that all disk writes are completed before the
       shutdown.  (The kernel automatically writes file system information
       to disk at MAXBUFAGE intervals.)

       This command works only for a user with appropriate privilege.  If a
       user without appropriate privilege issues the command, it fails
       silently.  On a generic DG/UX system, appropriate privilege is
       granted by having an effective UID of 0 (root). See the
       appropriate_privilege(5) man page for more information.

       On a system with DG/UX information security, appropriate privilege is
       granted by having one or more specific capabilities enabled in the
       effective capability set of the user.  See the cap_defaults(5) man
       page for more information.

SEE ALSO
       halt(1M), update(1M), sync(2), and appropriate_privilege(5).


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