asyncによる配列データからのシーケンシャル実行

gistfile1.txt

var async = require('async');
var exec =require('child_process').exec

var plays = []
var datum = ["hello", "world"]

var cmd = function (msg, logger) {
  var command = "echo " + msg + "; sleep 10"
  var proc = exec(command,
                  {
                    timeout: 3600 * 1000
                  },
                  logger
                 )
}

async.mapSeries(datum, function(data, next) {
    console.log(new Date())
    cmd(data, function(error, stdout, stderr) {
      console.log(stdout)
      next(null, stdout)
    })
  },
  function(error, results) {
    console.log('all done.')
  }
)