node-webkit-sudo/pidof.js

sudo for NW.js in Mac OSX

var exec = require("child_process").exec;

module.exports = pidof;

function pidof(cmd, callback) {
  exec("ps -eo pid,comm", function (err, stdout, stderr) {
    if (err) {
      callback(err);
    } else {
      var pid = pidof.parse(stdout, cmd);
      callback(null, pid);
    }
  });
};

pidof.parse = function (data, cmd) {
  var cmdRe = new RegExp('/' + cmd + '$');
  var lines = data.trim().split("\n");

  var pidlist = [];
  for (var i = 0, l = lines.length; i < l; i++) {
    var fields = lines[i].trim().split(/\s+/, 2);

    if (fields.length !== 2) {
      continue;
    }

    if (fields[1] === cmd || fields[1].match(cmdRe)) {
      pidlist.push(parseInt(fields[0], 10));
    }
  }

  return pidlist;
};