sync(2) System Calls Manual sync(2)
NAME
sync, lsync - update disk
SYNOPSIS
DESCRIPTION
causes all information in memory that should be on disk to be written out. This includes modified file system meta-data and delayed block
I/O.
It should be used by commands and programs that examine a file system, such as and so on. It is mandatory before a shutdown.
The writing, although scheduled, is not necessarily complete upon return from
In some HP-UX systems, may be reduced to a no-op. This is permissible on a system which does not cache buffers or in a system that in some
way ensures that the disks are always in a consistent state.
is a deprecated system call that is currently functionally identical to HP-UX kernel support for it remains only to aid compatibility with
very old HP-UX binaries.
AUTHOR
was developed by HP and AT&T Bell Laboratories.
SEE ALSO
sync(1M), fdatasync(2), fsync(2).
STANDARDS CONFORMANCE
sync(2)
