mv_ldown.js -- port of mv_ldown.rb to Node javascript

gistfile1.js

#! /usr/bin/env node

var path = require('path'),
    fs   = require('fs')

var userhome     = process.env['HOME'],
    downloadsDir = path.join(userhome, 'Downloads'),
    downloads    = fs.readdirSync(downloadsDir),
    all          = []

downloads.forEach(function(f) {
  f = path.join(downloadsDir, f)
  all.push([f, fs.statSync(f)])
})

// sort by newest first
all.sort(function(x, y) {
  var a = x[1].mtime.valueOf(),
      b = y[1].mtime.valueOf()
  if (a < b)      return 1
  else if (a > b) return -1
  else            return 0
})

var lastDownload = null,
    base         = null

all.forEach(function(x) {
  if (lastDownload == null && x[1].isFile()) {
    lastDownload = x[0]
    base = path.basename(lastDownload)
  }
})

if (lastDownload == null) {
  console.log("no files in ~/Downloads")
} else if (path.existsSync(base)) {
  console.log("./" + base + " already exists")
} else {
  console.log("moving " + lastDownload + " to .")
  fs.renameSync(lastDownload, path.basename(lastDownload))
}