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#!/usr/bin/env nodevar argv = require('yargs/yargs')(process.argv.slice(2))    .usage('Usage: $0 -x [num] -y [num] -w [msg] -h [msg]')    .implies({        x: 'y',        w: '--no-h',        1: 'h'    })    .argv;
if (argv.x) {    console.log('x / y : ' + (argv.x / argv.y));}
if (argv.y) {    console.log('y: ' + argv.y);}
if (argv.w) {    console.log('w: ' +argv.w);}
if (argv.h) {    console.log('h: ' +argv.h);}