Calls the given shell command. Output will not be displayed. Returns the
    status code.

    **Examples**:
    ::
        auxly.shell.silent("ls")

def silent(cmd, **kwargs):
    """Calls the given shell command. Output will not be displayed. Returns the
    status code.

    **Examples**:
    ::
        auxly.shell.silent("ls")
    """
    return call(cmd, shell=True, stdout=NULL, stderr=NULL, **kwargs)