.TH SYNC 8 .UC .SH NAME sync \- update the super block .SH SYNOPSIS .B sync .SH DESCRIPTION .I Sync executes the .I sync system primitive. If the system is to be stopped, .I sync must be called to insure file system integrity. See .IR sync (2) for details. .SH "SEE ALSO" sync(2), update(8), reboot(8)