sync

Synchronize cached writes to persistent storage

TLDR

Flush all pending write operations on all disks

$ sync
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Flush all pending write operations on a single file to disk

$ sync [path/to/file]
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SYNOPSIS

sync [OPTION] [FILE]...

DESCRIPTION

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

BUGS

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

REPORTING BUGS

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

COPYRIGHT

Copyright © 2020 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <https://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

fdatasync(2), fsync(2), sync(2), syncfs(2) Full documentation <https://www.gnu.org/software/coreutils/sync> or available locally via: info '(coreutils) sync invocation'

AUTHOR

Written by Jim Meyering and Giuseppe Scrivano.

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