process.argv[2] node js

// The process.argv[2] command in Node.js allows us to access command line arguments passed to the program. 
// Arguments are passed as an array to the program, and process.argv[2] refers to the third argument in the array.
// In order to use this command, we first need to save the arguments in a variable:

// Save the arguments in an array
const args = process.argv; 

// Access the third argument using process.argv[2]
const thirdArg = process.argv[2];

console.log(thirdArg);

// This command can come in handy when we need to pass in arguments to our program in order to run it.
// For example, if we need to pass in an environment variable, we could use process.argv[2] to access that argument and assign the value to a variable.
  

We can also use the process.argv command to access any arguments that have been passed to the program. This can be useful for if we need to pass in variables in order to run the program, for example, if we need to pass in an environment variable, we could use process.argv[2] to access that argument and assign the value to a variable.