Node.js Read/Write

README.md

// READ
// node read.js < 1596859367268.json
const data = require("fs").readFileSync("/dev/stdin", "utf8");
console.log(data);

// WRITE
// node foo.js > `date '+%Y%m%d%H%M%S'`.json 
// or
// node write.js
const filename = `${String(new Date().valueOf())}.json`;
const data = JSON.stringify(process.env);
require("fs").writeFile(
  require("path").resolve(__dirname, filename),
  data,
  (err) => {
    if (err) throw err;
  }
);