Python os.lchflags() Method

Hello dear readers! Welcome back to another section of our tutorial on Python. In this tutorial guide, we are going to be studying about the Os lchflags() method.

Python os lchflags() method sets the flags of path to the numeric flags. This method does not follow symbolic links unlike the chflags() method.

Note - This method is introduced in Python version 2.6

Syntax

The following below is the syntax for Python Os lchflags() method -

os.lchflags(path,  flags)

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Parameter Details

• path - This is file path for which flags is to be set.

• flags - The flag specified are formed by OR'ing the below values -
  • os.UF_NODUMP - Do not dump the file.
  • os.UF_IMMUTABLE - The file may be static and not changed.
  • os.UF_APPEND - The file may be appended to.
  • os.UF_NOUNLINK - The file may not be renamed or deleted.
  • os.UF_OPAQUE - The file directory is opaque when viewed through a union stack.
  • os.SF_ARCHIVED - The file may be archived.
  • os.SF_IMMUTABLE - The file may not be changed.
  • os.SF_APPEND - The file may be appended to.
  • os.SF_NOUNLINK - The file may not be deleted or renamed.
  • os.SF_SNAPSHOT - It is a snapshot file.

Return Value

It does not return any value.

Example

The following below is a simple example -

#!/usr/bin/python

import os, sys

# Open a file
path = "/var/www/html/foo.txt"
fd = os.open( path, os.O_RDWR|os.O_CREAT )

# Close opened file
os.close( fd )

# Now change the file flag.
ret = os.lchflags(path, os.UF_IMMUTABLE )

print "Changed file flag successfully!!"

Output

When the above code is executed, it will produce the following result -

Changed file flag successfully!!

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Alright guys! This is where we are rounding up for this tutorial post. In our next tutorial, we are going to be studying about the Python OS lchmod() Method.

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