v7 man page for sync

Query: sync

OS: v7

Section: 2

Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar

SYNC(2) 							System Calls Manual							   SYNC(2)

NAME
sync - update super-block
SYNOPSIS
sync( )
DESCRIPTION
Sync causes all information in core memory that should be on disk to be written out. This includes modified super blocks, modified i- nodes, and delayed block I/O. It should be used by programs which examine a file system, for example icheck, df, etc. It is mandatory before a boot.
SEE ALSO
sync(1), update(8)
BUGS
The writing, although scheduled, is not necessarily complete upon return from sync.
ASSEMBLER
(sync = 36.) sys sync SYNC(2)
Related Man Pages
syncfs(2) - linux
sync(2) - debian
sync(2) - centos
syncfs(2) - centos
sync(2) - netbsd
Similar Topics in the Unix Linux Community
NTPD seems to be not syncing !!!
sync password
Compare file dates before copy
NTP synchronised problem in our Centos 7.6 node
"synchronisation lost" errors for Solaris NTP server