node.js check how long you run your PC

  Please read how to initialize npm from this post.

1. Uptime

First, you need to type the 'const os = require('os');' to import the os module.

After that type 'console.log(os.uptime());'. 

Now run the node to run index.js or index.

Enter: need to check your file path

- node index.js

- node index

The number is a second.

2. variable

build const variable to put 'os.uptime()'

- 'os_time'

3. Divide the number to 3600(using console.log)

Now print the number(os_time/3600) to find how long your does your OS run(hour).