tiny alarm for when you're cooking on your comp

alarm.js

if (process.argv.length < 3) {
    console.error("usage: alarm.js <time (defaults to seconds)> [optionally: minutes|hours|days|years]")
    console.error("example:")
    console.error("\tnode alarm.js 2 // trigger alarm in 2 seconds")
    console.error("\tnode alarm.js 2 minutes // trigger alarm in 2 minutes")
    process.exit()
}
var time = parseInt(process.argv[2])
var unit = "seconds"
var factor = 1000
if (process.argv.length > 3) {
    unit = process.argv[3].toLowerCase()
}
switch(unit.charAt(0)) {
    case "s":
        break
    case "m":
        factor = 1000 * 60
        break
    case "h":
        factor = 1000 * 60 * 60
        break
    case "d":
        factor = 1000 * 60 * 60 * 24
        break
    case "y":
        factor = 1000 * 60 * 60 * 24 * 365
        break
    default:
        console.log("DIDN'T RECOGNIZE %s, DEFAULTING TO SECONDS", unit)
        break;
}

var beepFrequency = .25 * 1000
setTimeout(function() {
    setInterval(beep, beepFrequency)
}, time * factor)
console.log("alarm started for %d %s..", time, unit)
var alarmTime = new Date(new Date().getTime() + time * factor)
console.log("alarm will go off at %s", alarmTime.toString())

var accumulator = 0
function beep() {
    accumulator += beepFrequency
    var seconds = accumulator / 1000
    var minutes = seconds / 60
    if (seconds % 60 === 0) {
        console.log("%d minutes since alarm", minutes)
    }
    console.log("%d %s", time, unit)
    console.log("\007")
}