fsync
—
synchronize a file's in-core state with that on
disk
The fsync
utility causes all the modified
data and meta-data of all the files named on the command line to be written
to a permanent storage device.
The fsync
utility uses the
fsync(2)
function call.
If an error occurs, the fsync
utility
proceeds to the next file, and exits >0. Otherwise, it exits 0.
The fsync
command first appeared in
FreeBSD 4.3.