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1.1 ! root 1: .\" Copyright (c) 1980 Regents of the University of California. ! 2: .\" All rights reserved. The Berkeley software License Agreement ! 3: .\" specifies the terms and conditions for redistribution. ! 4: .\" ! 5: .\" @(#)sync.2 6.2 (Berkeley) 6/30/85 ! 6: .\" ! 7: .TH SYNC 2 "June 30, 1985" ! 8: .UC 4 ! 9: .SH NAME ! 10: sync \- update super-block ! 11: .SH SYNOPSIS ! 12: .B sync() ! 13: .SH DESCRIPTION ! 14: .I Sync ! 15: causes all information in core ! 16: memory that should be on disk to be written out. ! 17: This includes modified super blocks, ! 18: modified i-nodes, and delayed block I/O. ! 19: .PP ! 20: .I Sync ! 21: should be used by programs that examine a file system, ! 22: for example ! 23: .I "fsck, df," ! 24: etc. ! 25: .I Sync ! 26: is mandatory before a boot. ! 27: .SH "SEE ALSO" ! 28: fsync(2), sync(8), update(8) ! 29: .SH BUGS ! 30: The writing, although scheduled, is not necessarily ! 31: complete upon return from ! 32: .IR sync .
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