function _exec(from, to, text, message) {
  var match = text.match(/(^!|,$)/);

  if (match !== null) {
    var cmd = text.substring(1);
    var statcmd = commands[cmd];

    if (statcmd != null) {
      cmd = statcmd;
    } else {
      var dyncmd = cmd.split(' ');
      dyncmd = dyncmd[0];
      dyncmd = commandsargs[dyncmd];

      if (dyncmd != null) {
        cmd = cmd.replace(/[^A-Za-z0-9\' ]/g, '');
        var args = cmd.substr(cmd.indexOf(' ') + 1);
        cmd = dyncmd + ' ' + args;
      }
    }

    if (cmd != null) {
      cmd = cmd.replace('\'', '\\\'');
      var exec = require('child_process').exec;
      exec(cmd, function callback(error, stdout, stderr) {
        _bot.say(to, stdout);
      });
    }
  }
}