def exists(c, runner, path):
    """
    Return True if given path exists on the current remote host.

    :param c:
        `~invoke.context.Context` within to execute commands.
    :param str path:
        Path to check for existence.
    """
    cmd = 'test -e "$(echo {})"'.format(path)
    return runner(cmd, hide=True, warn=True).ok