[unix-history] / usr / man / man2 / sync.2

.TH SYNC 2 
.SH NAME
sync \- update super-block
.SH SYNOPSIS
.B sync( )
.SH DESCRIPTION
.I 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.
.PP
It should be used by programs which examine a file system,
for example
.I "icheck, df,"
etc.
It is mandatory before a boot.
.SH "SEE ALSO"
sync(1), update(8)
.SH BUGS
The writing, although scheduled, is not necessarily
complete upon return from 
.IR sync .
.SH "ASSEMBLER (PDP-11)"
(sync = 36.)
.br
.B sys sync
Commit	Line	Data
e6817382 BJ	1	.TH SYNC 2
	2	.SH NAME
	3	sync \- update super-block
	4	.SH SYNOPSIS
	5	.B sync( )
	6	.SH DESCRIPTION
	7	.I Sync
	8	causes all information in core
	9	memory that should be on disk to be written out.
	10	This includes modified super blocks,
	11	modified i-nodes, and delayed block I/O.
	12	.PP
	13	It should be used by programs which examine a file system,
	14	for example
	15	.I "icheck, df,"
	16	etc.
	17	It is mandatory before a boot.
	18	.SH "SEE ALSO"
	19	sync(1), update(8)
	20	.SH BUGS
	21	The writing, although scheduled, is not necessarily
	22	complete upon return from
	23	.IR sync .
	24	.SH "ASSEMBLER (PDP-11)"
	25	(sync = 36.)
	26	.br
	27	.B sys sync