Python os.chflags() method definition and usage introduction (example analysis)

Today in this article we will take a look at the python os.chflags() method. In the next article we will introduce the chflags() in the python os module ) method introduces its definition and its functions and uses.

Overview

The os.chflags() method is used to set the flag of the path to a numeric flag. Multiple tags can be combined using OR.

Only supports use under Unix.

Grammar

chflags() method syntax format is as follows:

os.chflags(path, flags)

Parameters

path -- File name path or directory path.

flags -- Can be the following values:

stat.UF_NODUMP: Non-dump file

stat.UF_IMMUTABLE: The file is read-only

stat .UF_APPEND: The file can only append content

stat.UF_NOUNLINK: The file cannot be deleted

stat.UF_OPAQUE: The directory is opaque and needs to be viewed through the joint stack

stat.SF_ARCHIVED: Yes Archive file (settable by super user)

stat.SF_IMMUTABLE: The file is read-only (settable by super user)

stat.SF_APPEND: The file can only append content (settable by super user)

stat.SF_NOUNLINK: The file cannot be deleted (can be set by the super user)

stat.SF_SNAPSHOT: Snapshot file (can be set by the super user)

(This method has no return value. )

Example

The following example demonstrates the use of the chflags() method:

#!/usr/bin/python
# -*- coding: UTF-8 -*-
import os,stat
path = "/tmp/foo.txt"
# 为文件设置标记，使得它不能被重命名和删除
flags = stat.SF_NOUNLINK
retval = os.chflags( path, flags)
print "返回值: %s" % retval

The output result of executing the above program is:

返回值: None

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