justNoOneHere / FileHashGen

This code generates a SHA-256 hash for a file by prompting the user to enter the file path, reading the file into a buffer using the fs module, and then calculating the hash using the crypto module. The hash is output to the console and the program is terminated.

FileHashGen

This code prompts the user to enter the file path using the question method of the readline interface, and then calculates the SHA-256 hash of the file using the crypto module. The hash is calculated by reading the file into a buffer using the fs module, and then passing the buffer to the update method of the createHash function. The digest method is then used to convert the hash to a hexadecimal string, which is output to the console. Finally, the readline interface is closed.

Here is a summary of what each line of code does:

• const fs = require('fs'): This line imports the fs (file system) module, which provides functions for interacting with the file system, such as reading and writing files.
• const crypto = require('crypto'): This line imports the crypto module, which provides cryptographic functionality, including functions for calculating hashes.
• const readline = require('readline'): This line imports the readline module, which provides an interface for reading input from the command line.
• const rl = readline.createInterface({ input: process.stdin, output: process.stdout }): This line creates a readline interface with process.stdin as the input stream and process.stdout as the output stream.
• rl.question('Enter the file path: ', (filePath) => {...}): This line prompts the user to enter the file path using the question method of the readline interface, and passes the user's input to a callback function as the filePath argument.
• const fileBuffer = fs.readFileSync(filePath): This line reads the file into a buffer using the readFileSync function of the fs module.
• const hash = crypto.createHash('sha256').update(fileBuffer).digest('hex'): This line calculates the SHA-256 hash of the file buffer using the createHash function of the crypto module, and converts the hash to a hexadecimal string using the digest method.
• console.log(hash): This line outputs the hash to the console.
• rl.close(): This line closes the readline interface.