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'

I've recently update Magento from 2.18 to 2.2.0 and I've noticed something weird: the time of cronjobs displayed in admin is the date of the table not the magento/local time so if I set a job at 15:00, the admin shows it to be scheduled at 13:00 but the red vertical line (the line that shows the current time) is correctly placed at local current time (so if it is 14:30 in magento, the vertical line is correctly at 14:30). So, if it is 14:30 and I schedule a job at 15:00:

• the red line is correctly at 14:30
• the job is correctly run by magento at 15:00
• the admin interface shows the job to be scheduled as pending (correct) at 13:30 (wrong, it should be at 15:00)

good day, change your description bin/magento module:install Shockwavemk_CronSchedule to bin/magento module:enable Shockwavemk_CronSchedule

I've tried to disable, then remove this module via composer, then by manually removing the folder (cleaning cache, upgradeing, etc...) but nothing worked: even if the folder is not there anymore, the admin still shows the menu item and if I click on it I can go to the module page... Can you explain the procedure to remove/disable this module from magento (my current version is 2.2.0)? thanks

My browser just crashes or times out of when there are a lot of cron entries (my cron_shedule table contains 5k+ entries)