在检查目录是否存在时使用 `directory?`，而不是 `exists?`

modules/exploits/example_linux_persistence.rb: return CheckCode::Safe("#{writable_dir} doesn't exist") unless exists?(writable_dir) modules/exploits/linux/persistence/apt_package_manager.rb: return CheckCode::Safe("#{writable_dir} not found") unless exists?(writable_dir) modules/exploits/linux/persistence/docker_image.rb: return CheckCode::Safe("#{writable_dir} doesn't exist") unless exists?(writable_dir) modules/exploits/linux/persistence/init_openrc.rb: return CheckCode::Safe("#{writable_dir} doesn't exist") unless exists?(writable_dir) modules/exploits/linux/persistence/init_systemd.rb: return CheckCode::Safe("#{writable_dir} doesn't exist") unless exists?(writable_dir) modules/exploits/linux/persistence/init_systemd_override.rb: return CheckCode::Safe("No write access to #{service_dir}") if !exists?(override_conf) && !writable?(service_dir) modules/exploits/linux/persistence/udev.rb: return CheckCode::Safe("#{writable_dir} doesn't exist") unless exists?(writable_dir) modules/exploits/linux/persistence/yum_package_manager.rb: return CheckCode::Safe("#{datastore['WritableDir']} does not exist") unless exists? datastore['WritableDir'] modules/exploits/multi/persistence/at.rb: return CheckCode::Safe("#{datastore['WritableDir']} does not exist") unless exists? datastore['WritableDir'] modules/exploits/windows/persistence/accessibility_features_debugger.rb: return CheckCode::Safe("#{writable_dir} doesn't exist") unless exists?(writable_dir) modules/exploits/windows/persistence/assistive_technology.rb: return CheckCode::Safe("#{writable_dir} doesn't exist") unless exists?(writable_dir) modules/exploits/windows/persistence/bits.rb: return CheckCode::Safe("#{writable_dir} doesn't exist") unless exists?(writable_dir) modules/exploits/windows/persistence/image_exec_options.rb: return CheckCode::Safe("#{writable_dir} doesn't exist") unless exists?(writable_dir) modules/exploits/windows/persistence/registry_userinit.rb: return CheckCode::Safe("#{writable_dir} doesn't exist") unless exists?(writable_dir) modules/exploits/windows/persistence/service.rb: return CheckCode::Safe("#{writable_dir} doesn't exist") unless exists?(writable_dir) modules/exploits/windows/persistence/service_for_user/event.rb: return CheckCode::Safe("#{writable_dir} doesn't exist") unless exists?(writable_dir) modules/exploits/windows/persistence/service_for_user/lock_unlock.rb: return CheckCode::Safe("#{writable_dir} doesn't exist") unless exists?(writable_dir) …