Node.js process.setegid() Method

The process.setegid() method is an inbuilt application programming interface of the process module which is used to set the numerical effective group identity of the Node.js process.

Syntax:

process.setegid(id)

Parameters: This method accept single parameter as mentioned above and described below:

• id: It is a required parameter. It is a string or an integer denotes either groupname or ID, if group name is passed, it blocks while resolving the associated a numeric ID.

Return: It does not return anything.

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

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

Example 1:

// Node.js program to demonstrate the
// process.setegid() Method

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

// Printing the numerical effective group
// identity of the Node.js process checking
// whether the methods exists or not
if (process.getegid && process.setegid ) {

    // Setting gid
    process.setegid(400);

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

Output:

The numerical effective group identity of the Node.js process: 400

Example 2:

// Node.js program to demonstrate the
// process.setegid() Method

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

// Checking whether the method
// exists or not
if (process.setegid) {
    try {
        process.setegid(696);
        console.log("gid has successfully been set");
      } catch (err) {
        console.log("Failed to set gid:", err);
      }
}

// Checking whether the method exists or not
if (process.getegid) {

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

Output:

gid has successfully been set
The numerical effective group identity of the Node.js process: 696

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

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