Execute cmd and capture stdout and stderr

    :param cmd: command to be executed
    :return: (stdout, stderr)

def sys_call(cmd):
    """Execute cmd and capture stdout and stderr

    :param cmd: command to be executed
    :return: (stdout, stderr)
    """
    p = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE, close_fds=True)
    return p.stdout.readlines(), p.stderr.readlines()