OS module in Python provides functions for interacting with the operating system. OS comes under Python’s standard utility modules. This module provides a portable way of using operating system dependent functionality.
os.sync() method in Python is used to force write of everything to disk. This method allows a process to flush all dirty buffers to disk.
Difference between os.sync(), os.fsync(fd) and os.fdatasync(fd) method –
os.sync() method force write of everything to disk where as os.fsync(fd) method force write of file associated with the specified file descriptor fd and os.fdatasync(fd) method is similar to os.fsync() method but it does not force update of file’s metadata.
Note: This method is only available on Unix platforms.
Syntax: os.sync()
Parameter: No parameter is required.
Return type: This method does not return any value.
Code: Use of os.sync() method
Python3
# Python program to explain os.sync() method # importing os moduleimport os# File path 1path1 = 'file.txt'# File path 2path2 = 'file2.txt'# File path 3path3 = 'file3.txt'# Open the files and get# the file descriptors# associated with them# using os.open() methodfd1 = os.open(path1, os.O_RDWR)fd2 = os.open(path2, os.O_RDWR)fd3 = os.open(path3, os.O_RDWR)# Write a bytestringstr = b"Lazyroar"os.write(fd1, str)os.write(fd2, str)os.write(fd3, str)# Sync. all buffers to disk# i.e force write everything# to disk using os.sync() methodos.sync()print("Force write everything committed successfully")# Close the file descriptorsos.close(fd1)os.close(fd2)os.close(fd3)# os.sync() method# will flush all buffers# to disk.# it may take a significant# length of time |
Force write of everything committed successfully
Reference: https://docs.python.org/3/library/os.html#os.sync
