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sync(2)
NAME
  sync - Updates all file systems

SYNOPSIS
  #include <unistd.h>

  void sync (void);

STANDARDS
  Interfaces documented on this reference page conform to industry standards
  as follows:

  sync():  XPG4-UNIX

  Refer to the standards(5) reference page for more information about
  industry standards and associated tags.

DESCRIPTION
  The sync() function causes all information in memory that should be on disk
  to be written out. The writing, although scheduled, is not necessarily
  complete upon return from the sync() function.  Types of information to be
  written include modified superblocks, inodes, data blocks, and indirect
  blocks.

  The sync() function should be used by programs that examine a file system,
  such as the df command and the fsck command.

RELATED INFORMATION
  Functions: fsync(2)

  Commands: sync(8)

  Standards: standards(5)

Index for Section 2

Alphabetical listing for S

Top of page