DESCRIPTION
The fsync system call causes all modified data and attributes of fd to be moved to a permanent storage device. This normally results in all in-core modified copies of buffers for the associated file to be written to a disk. The fsync system call should be used by programs that require a file to be in a known state, for example, in building a simple transaction facility.
RETURN VALUES
.Rv -std fsync
ERRORS
The fsync fails if:
