Node.js process.seteuid() Method
The process.seteuid() method is an inbuilt application programming interface of the process module which is used to set the effective user identity of the Node.js process.
Syntax:
process.seteuid( 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 that denotes either numeric ID or username string. If username is passed, it blocks while resolving the associated numeric ID.
Return Value: It does not return any value.
Note: This function will only work on POSIX platforms. It is not available on windows or android platform so will cause an error i.e. TypeError, seteuid is not a function.
Below examples illustrate the use of process.seteuid() method in Node.js:
Example 1:
Javascript
// Node.js program to demonstrate the // process.seteuid() method // Include process module const process = require( 'process' ); // Printing the effective user identity // of the Node.js process and checking // whether the method exists or not if (process.geteuid && process.seteuid ) { // Setting user id process.seteuid(400); // Printing geteuid() console.log( "The effective user identity " + "of the Node.js process:" + process.geteuid()); } |
Output:
The effective user identity of the Node.js process: 400
Example 2:
Javascript
// Node.js program to demonstrate the // process.seteuid() method // Include process module const process = require( 'process' ); // Setting user id and checking whether // the method exists or not if (process.seteuid) { // Within try catch try { process.seteuid(696); console.log( "User id has successfully been set" ); } catch (err) { console.log( "Failed to set user id:" , err); } } // Checking 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:
User id has successfully been set The numerical effective 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_seteuid_id
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