NAME

sync — Schedule file system updates

SYNOPSIS

DESCRIPTION

Schedule cached writes to filesystems. If any file is specified, only those files are scheduled, otherwise all filesystems are synchronized.

OPTIONS

-d

Sync only file data, not metadata.

-f

Sync entire filesystem. (Only available on systems with syncfs(2))

EXIT STATUS

The sync utility exits 0 on success, and >0 if an error occurs.

SEE ALSO

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

HISTORY

A sync utility appeared in Version 4 AT&T UNIX.

AUTHORS

Haelwenn (lanodan) Monnier <contact+utils@hacktivis.me>

CAVEATS

Due to sync(2) not indicating errors, synchronisation failures can't be detected. So the file(s) to be synchronised should be specified, or if available in your system, the -f option to synchronise a whole filesystem.