MiniUnix/usr/man/man2/sync.2

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.sh NAME
sync \*- update super-block
.sh SYNOPSIS
(sync = 36.; not in assembler)
.br
.ft B
sys  sync
.ft R
.sh DESCRIPTION
.it 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.
.s3
It should be used by programs which examine a file system,
for example
.it "icheck, df,"
etc.
It is mandatory before a boot.
.sh "SEE ALSO"
sync (VIII), update (VIII)
.sh DIAGNOSTICS
\*-