1SYNC(3P)                   POSIX Programmer's Manual                  SYNC(3P)
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PROLOG

6       This  manual  page is part of the POSIX Programmer's Manual.  The Linux
7       implementation of this interface may differ (consult the  corresponding
8       Linux  manual page for details of Linux behavior), or the interface may
9       not be implemented on Linux.
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NAME

12       sync - schedule file system updates
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SYNOPSIS

15       #include <unistd.h>
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17       void sync(void);
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DESCRIPTION

21       The sync() function shall cause all information in memory that  updates
22       file systems to be scheduled for writing out to all file systems.
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24       The  writing,  although  scheduled,  is  not  necessarily complete upon
25       return from sync().
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RETURN VALUE

28       The sync() function shall not return a value.
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ERRORS

31       No errors are defined.
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33       The following sections are informative.
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EXAMPLES

36       None.
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APPLICATION USAGE

39       None.
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RATIONALE

42       None.
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FUTURE DIRECTIONS

45       None.
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SEE ALSO

48       fsync(),  the  Base   Definitions   volume   of   IEEE Std 1003.1-2001,
49       <unistd.h>
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52       Portions  of  this text are reprinted and reproduced in electronic form
53       from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
54       --  Portable  Operating  System  Interface (POSIX), The Open Group Base
55       Specifications Issue 6, Copyright (C) 2001-2003  by  the  Institute  of
56       Electrical  and  Electronics  Engineers, Inc and The Open Group. In the
57       event of any discrepancy between this version and the original IEEE and
58       The  Open Group Standard, the original IEEE and The Open Group Standard
59       is the referee document. The original Standard can be  obtained  online
60       at http://www.opengroup.org/unix/online.html .
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64IEEE/The Open Group                  2003                             SYNC(3P)
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