Usage: node node-ping-graph.js <IP Address> Works only on Windows.

node-ping-graph.js

var cols = process.stdout.columns,
	rows = process.stdout.rows,
	spawn = require('child_process').spawn,

	i, j,

	red = '\u001b[31m',
	blue = '\u001b[34m',
	green = '\u001b[32m',
	white = '\u001b[37m',
	greenBg = '\u001b[42m',
	redBg = '\u001b[41m',
	reset = '\u001b[0m',

	maxPing = 1000,
	pingTarget,
	ping,
	pingResultStream = "",
	skipped = 0,

	timeOutText = "Target is timed out.",
	fillChar = " ";


pingTarget = process.argv[2];
ping = spawn('ping', [pingTarget, '-t']);

process.title = pingTarget;

if (pingTarget === undefined) {
	return null;
}

ping.stdout.on('data', function (data) {
	var dataString = data.toString(),
		pingResult,
		timeMatch,
		time,
		timeText,
		noOfBars,
		bars;
	if (dataString.indexOf("\r\n") >= 0) {
		// skip first 2 lines
		if (skipped <= 2) {
			skipped	++;
			return;
		}

		pingResultStream += dataString;
		pingResult = pingResultStream;
		pingResultStream = "";
		// analyze
		// console.log(pingResult);
		if (/time\=\d+ms/.test(pingResult)) {
			timeMatch = pingResult.match(/time\=(\d+)ms/);
			time = timeMatch[1];
			timeText = time + "ms";
			noOfBars = cols * time / maxPing;
			bars = "";
			bars += greenBg;
			for (i = 0; i < noOfBars / 2 - timeText.length / 2; i++) {
				bars += " ";
			}
			bars += (white + timeText);
			bars += greenBg;
			for (j = i; j < noOfBars - timeText.length ; j++) {
				bars += " ";
			}
			process.stdout.write(bars);
			process.stdout.write(reset);
			if (noOfBars < cols) {
				process.stdout.write("\n");
			}

		} else if (/timed out/.test(pingResult)) {
			bars = "";
			for (i = 0; i < cols / 2 - timeOutText.length / 2; i++) {
				bars += " ";
			}
			bars += (white + timeOutText);
			bars += redBg;
			for (j = i; j < cols - timeOutText.length - 1 ; j++) {
				bars += " ";
			}
			console.log(redBg + bars + reset);
		}
	} else {
		pingResultStream += dataString;
		// console.log("HALF ");
	}
	// console.log(data.toString()); // + "->" + data.toString().indexOf("\r\n"));
});