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NAME    [Toc]    [Back]

       sync  -  Flush  file  system metadata and data from memory
       buffers to disk.

SYNOPSIS    [Toc]    [Back]


DESCRIPTION    [Toc]    [Back]

       The sync utility runs the  sync  function,  which  flushes
       (writes)  system metadata and data from all unwritten memory
 buffers  to  disk.   For  example,  the  data  flushed
       includes,  for UFS, modified inodes and delayed block I/O.

       Other commands that bring the system  down,  such  as  the
       shutdown command, issue their own sync functions.

       Use  this  sync  utility  to  ensure file system integrity
       should you need to stop the system under  unusual  circumstances.

       Note  that the writing of buffers to disk, although scheduled,
 may not be complete when the utility exits.

FILES    [Toc]    [Back]

       Specifies the command path

SEE ALSO    [Toc]    [Back]

       Functions: sync(2)

[ Back ]
 Similar pages
Name OS Title
sync2 Tru64 Flush file system metadata and data from memory buffers to disk
dbc_min_pct HP-UX minimum percentage of memory used for caching file I/O data and metadata
dbc_max_pct HP-UX maximum percentage of memory to be used for caching file I/O data and metadata
VOP_FSYNC FreeBSD flush file system buffers for a file
krs_flush HP-UX flush kernel registry services data to disk
cdfs Tru64 The Compact Disk-Read Only Memory File System (CDFS)
sync Linux flush filesystem buffers
vinvalbuf OpenBSD flush and invalidate all buffers associated with a vnode
verify Tru64 Checks the AdvFS on-disk metadata structures
update OpenBSD flush internal filesystem caches to disk frequently
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