Python: Find group id, user id, real group id, supplemental group ids associated with the current process

Last update on May 28 2022 12:59:17 (UTC/GMT +8 hours)

Python Basic: Exercise-104 with Solution

Write a Python program to get the effective group id, effective user id, real group id, a list of supplemental group ids associated with the current process.

Note: Availability: Unix.

Sample Solution:-

Python Code:

import os
print("\nEffective group id: ",os.getegid())
print("Effective user id: ",os.geteuid())
print("Real group id: ",os.getgid())
print("List of supplemental group ids: ",os.getgroups())
print()

Sample Output:

Effective group id:  1007                                          
Effective user id:  1006                                           
Real group id:  1007                                               
List of supplemental group ids:  [1007]

Flowchart:

Python Code Editor:

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Python: Tips of the Day

Find current directory and file's directory:

To get the full path to the directory a Python file is contained in, write this in that file:

import os 
dir_path = os.path.dirname(os.path.realpath(__file__))

(Note that the incantation above won't work if you've already used os.chdir() to change your current working directory, since the value of the __file__ constant is relative to the current working directory and is not changed by an os.chdir() call.)

To get the current working directory use

import os
cwd = os.getcwd()

Documentation references for the modules, constants and functions used above:

The os and os.path modules.
The __file__ constant
os.path.realpath(path) (returns "the canonical path of the specified filename, eliminating any symbolic links encountered in the path")
os.path.dirname(path) (returns "the directory name of pathname path")
os.getcwd() (returns "a string representing the current working directory")
os.chdir(path) ("change the current working directory to path")

Ref: https://bit.ly/3fy0R6m