Python3 os.fchmod () method
Python3 OS file / directory methods
Outline
os.fchmod () method is used to change the access permissions of a file, the file specified by the parameter fd, the parameter mode is file access permissions on Unix.
Available on Unix.
grammar
fchmod () method syntax is as follows:
os.fchmod(fd, mode);
parameter
fd - file descriptor
mode - can be one or more components, multiple use "|" separated:
stat.S_ISUID: set UID bit
stat.S_ISGID: set group ID bits
stat.S_ENFMT: system file locking enforcement action
stat.S_ISVTX: After the save text and images
stat.S_IREAD: read access for the owner
stat.S_IWRITE: write permissions for the owner
stat.S_IEXEC: execute permissions for the owner of
stat.S_IRWXU: For the owner to read, write, and execute permissions
stat.S_IRUSR: read access for the owner
stat.S_IWUSR: write permissions for the owner
stat.S_IXUSR: execute permissions for the owner of
stat.S_IRWXG: for the same group of people permission to perform read and write
stat.S_IRGRP: For the same group read access
stat.S_IWGRP: write permissions for the same group
stat.S_IXGRP: execute permissions for the same group of
stat.S_IRWXO: read and write permissions for the other groups performed
stat.S_IROTH: read access for other groups
stat.S_IWOTH: write privileges for other groups
stat.S_IXOTH: permission to other groups by the
return value
This method has no return value.
Examples
The following example demonstrates fchmod () method of use:
#!/usr/bin/python3
import os, sys, stat
# 打开文件 "/tmp/foo.txt"
fd = os.open( "/tmp", os.O_RDONLY )
# 设置文件可通过组执行
os.fchmod( fd, stat.S_IXGRP)
# 设置文件可被其他用户写入
os.fchmod(fd, stat.S_IWOTH)
print ("修改权限成功!!")
# 关闭文件
os.close( fd )
The above program output is:
修改权限成功!!