text progress bar example

progress.js

String.prototype.repeat = function(num) {
  return new Array(num + 1).join(this);
};

var sprintf = require('sprintf'),
    util = require('util'),
    colors = require('colors'),
    total = 10000,
    i;

console.log("This could take a while. You can run the following command on another shell to track the status:\n".green);
console.log("    tail -f ./path/to/output\n".yellow);

for (i=1; i<=total; i+=1) {
  util.print('\r' + sprintf('[ %-100s ] %d / %d', '#'.repeat(Math.floor(i/total*100)), i, total));
}
console.log("\n\nFinished!\n".green);