def _sanitize_command_string(cmd):
        """
        Remove any potentially sensitive information from the command string.

        For now we only mask the values of the sensitive environment variables.
        """
        if not cmd:
            return cmd

        result = re.sub(
            r"ST2_ACTION_AUTH_TOKEN=(.+?)\s+?",
            "ST2_ACTION_AUTH_TOKEN=%s " % (MASKED_ATTRIBUTE_VALUE),
            cmd,
        )
        return result

        Remove any potentially sensitive information from the command string.

        For now we only mask the values of the sensitive environment variables.
        
st2common/st2common/runners/parallel_ssh.py