Linux Command Library
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basic
Basic
tips
Tips

sync

Synchronize cached writes to persistent storage

- Flush all pending write operations on all disks:
sync

- Flush all pending write operations on a single file to disk:
sync [path/to/file]

sync [,OPTION/] [,FILE/]...

Synchronize cached writes to persistent storage

If one or more files are specified, sync only them, or their containing file systems.

-d, --data
sync only file data, no unneeded metadata
-f, --file-system
sync the file systems that contain the files
--help
display this help and exit
--version
output version information and exit

Persistence guarantees vary per system. See the system calls below for more details.

Written by Jim Meyering and Giuseppe Scrivano.

GNU coreutils online help: <http://www.gnu.org/software/coreutils/> Report sync translation bugs to <http://translationproject.org/team/>

Copyright © 2016 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.

fdatasync(2), fsync(2), sync(2), syncfs(2)

Full documentation at: <http://www.gnu.org/software/coreutils/sync> or available locally via: info '(coreutils) sync invocation'

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