Node.js process.geteuid() Method

The process.geteuid() method is an inbuilt application programming interface of the process module which is used to get the numerical effective user identity of the Node.js process.

Syntax:

process.geteuid()

Parameters: This method does not accept any parameters.

Return Value: This method returns an object specifying the numerical effective user identity of the Node.js process.

Note: This method will only work on POSIX platforms. Not available on windows or android platforms so will cause an error i.e. TypeError, geteuid is not a function.

Below examples illustrate the use of process.geteuid() method in Node.js:

Example 1:

// Node.js program to demonstrate the
// process.geteuid() method

// Include process module
const process = require('process');

// Printing the numerical effective
// user identity of the Node.js process
console.log(process.geteuid());

Output:

6693036

Example 2:

// Node.js program to demonstrate the
// process.geteuid() method

// Include process module
const process = require('process');

// Check whether the method exists or not
if (process.geteuid) {

  // Printing geteuid() value
  console.log("The numerical effective user "
          + "identity of the Node.js process:"
          + process.geteuid());
}

Output:

The numerical effective user identity of the Node.js process: 6693036

Note: The above program will compile and run by using the node filename.js command.

Reference: https://nodejs.org/api/process.html#process_process_geteuid