[鸟哥笔记]数据同步写入磁盘：sync

-bash-3.2$ man syncSYNC(1)                          User Commands                         SYNC(1)NAME       sync - flush file system buffersSYNOPSIS       sync [OPTION]DESCRIPTION       Force changed blocks to disk, update the super block.       --help display this help and exit       --version              output version information and exitAUTHOR       Written by Jim Meyering.REPORTING BUGS       Report bugs to <bug-coreutils@gnu.org>.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)

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