Module name missing

[JVKeller]

Getting an error because the module name is missing.

Added to composer.jason
ran composer update,
can't enable.

[~/public_html]# php bin/magento enable shockwavemk/magento2-module-cron-schedule


  [InvalidArgumentException]
  Command "enable" is not defined.
  Did you mean one of these?
      cache:enable
      module:enable
      maintenance:enable



[~/public_html]# php bin/magento module:enable shockwavemk/magento2-module-cron-schedule
Unknown module(s): 'shockwavemk/magento2-module-cron-schedule'
 [~/public_html]# php bin/magento module:enable magento2-module-cron-schedule
Unknown module(s): 'magento2-module-cron-schedule'
 [~/public_html]# php bin/magento module:enable Shockwavemk_CronSchedul
Unknown module(s): 'Shockwavemk_CronSchedul'