text: #!/usr/bin/env node
  const program = require('commander');
  const pinger = require('./app/pinger');
  const {error} = require('./util/logger');
  
  let url;
  
  program
      .arguments('<url>')
      .action(urlValue => {
          url = urlValue;
      })
      .parse(process.argv);
  
  if (!url) {
      error('No URL provided');
      program.help();
      return;
  }
  
  pinger.makePing(url);