Node.js | os.uptime() Method

The os.uptime() method is an inbuilt application programming interface of the os module which is used to get system uptime in seconds.

Syntax:

os.uptime()

Parameters: This method does not accept any parameters.

Return Value: This method returns an integer value that specifies the number of seconds the system is running i.e. system uptime.

Below examples illustrate the use of os.uptime() method in Node.js:



Example 1:

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// Node.js program to demonstrate the    
// os.uptime() method 
     
// Allocating os module
const os = require('os');
  
// Printing os.uptime() value
console.log(String(os.uptime()) + " Seconds");

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Output: 
 

4507 Seconds

Example 2:

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// Node.js program to demonstrate the    
// os.uptime() method 
     
// Allocating os module
const os = require('os');
  
// Printing os.uptime() value
var ut_sec = os.uptime();
var ut_min = ut_sec/60;
var ut_hour = ut_min/60;
   
ut_sec = Math.floor(ut_sec);
ut_min = Math.floor(ut_min);
ut_hour = Math.floor(ut_hour);
  
ut_hour = ut_hour%60;
ut_min = ut_min%60;
ut_sec = ut_sec%60;
  
console.log("Up time: " 
        + ut_hour + " Hour(s) " 
        + ut_min + " minute(s) and " 
        + ut_sec + " second(s)");

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Output:

Up time: 1 Hour(s) 18 minute(s) and 8 second(s)

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

Reference: https://nodejs.org/api/os.html#os_os_uptime

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