sync(2)sync(2)NAMEsync - Update all file systems
SYNOPSIS
#include <unistd.h>
void sync(
void );
STANDARDS
Interfaces documented on this reference page conform to industry stan‐
dards as follows:
sync(): XSH4.2, XSH5.0
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 neces‐
sarily complete upon return from the sync() function. Types of informa‐
tion to be written include modified superblocks, inodes, data blocks,
and indirect blocks.
The sync() function should be used by programs that examine a file sys‐
tem, such as the df and fsck commands.
SEE ALSO
Commands: sync(8)
Functions: fsync(2)
Standards: standards(5)sync(2)