Node.js process.setuid() Method Last Updated : 28 Apr, 2025 Comments Improve Suggest changes Like Article Like Report The process.setuid() method is an inbuilt application programming interface of the process module which is used to set the user identity of the Node.js process. Syntax: process.setuid(id) Parameters: This method accepts single parameter as mentioned above and described below: id: It is a required parameter that holds a String or an integer denotes either numeric ID or username string, if username is passed, it blocks while resolving the associated numeric ID. Return: It does not return any value. Note: This function will only work on POSIX platforms. Not available on windows or android platforms so will cause an error i.e. TypeError, setuid is not a function. Below examples illustrate the use of process.setuid() method in Node.js: Example 1: JavaScript // Node.js program to demonstrate the // process.setuid() Method // Including process module const process = require('process'); // Print the user identity of the Node.js // process and check whether the methods // exists or not if (process.getuid && process.setuid ) { // Setting user id process.setuid(400); // Printing getuid() value console.log("The user identity of the Node.js" + " process:", process.getuid()); } Output: The user identity of the Node.js process: 400 Example 2: JavaScript // Node.js program to demonstrate the // process.setuid() Method // Including process module const process = require('process'); // Set user id and check whether // the method exists or not if (process.setuid) { // Within try catch try { process.setuid(696); console.log("User id has successfully been set"); } catch (err) { console.log("Failed to set user id:", err); } } // Check whether the method exists or not if (process.getuid) { // Printing getuid() value console.log("The user identity of the Node.js" + " process:", process.getuid()); } Output: User id has successfully been set The user 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_setuid_id Comment More infoAdvertise with us G gekcho Follow Improve Article Tags : Web Technologies Node.js Node.js-process-module Similar Reads Node.js process.chdir() Method The process.chdir() method is an inbuilt application programming interface of the process module which is used to change the current working directory. Syntax: process.chdir( directory ) Parameters: This method accepts single parameter as mentioned above and described below: directory: It is require 2 min read Node.js process.cpuUsage() Method The process.cpuUsage() method is an inbuilt application programming interface of the Process module which is used to get the user, system CPU time usage of the current process. It is returned as an object with property user and system, values are in microseconds. 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