Node.js process.setuid() Method

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:  

Output: 

The user identity of the Node.js process: 400

Example 2:  

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