[鸟哥笔记]数据同步写入磁盘：sync

-bash-3.2$ man sync
SYNC(1)                          User Commands                         SYNC(1)

NAME
       sync - flush file system buffers

SYNOPSIS
       sync [OPTION]

DESCRIPTION
       Force changed blocks to disk, update the super block.

       --help display this help and exit

       --version
              output version information and exit

AUTHOR
       Written by Jim Meyering.

REPORTING BUGS
       Report bugs to <[email protected]>.

COPYRIGHT
       Copyright (C) 2008 Free Software Foundation, Inc.  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
       This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.

SEE ALSO
       sync(2)

       The  full documentation for sync is maintained as a Texinfo manual.  If the info and sync programs are properly installed at your
       site, the command

              info coreutils [1msync invocation

       should give you access to the complete manual.

GNU coreutils 6.12               November 2008                         SYNC(1)