.TH SYNC 8 "4 February 1983" .UC 4 .SH NAME sync \- update the super block .SH SYNOPSIS .B /etc/sync .SH DESCRIPTION .I Sync executes the .I sync system primitive. .I Sync can be called to insure all disk writes have been completed before the processor is halted in a way not suitably done by .IR reboot (8) or .IR halt (8). .PP See .IR sync (2) for details on the system primitive. .SH "SEE ALSO" sync(2), fsync(2), halt(8), reboot(8), update(8)