Provides information about things that may be wrong in your Drupal installation, if any.
drush core-requirements
--ignore : Comma-separated list of requirements to remove from output. Run with --pipe to see key values to use.
Show all status lines from the Status Report admin page.
drush core-requirements
Show only the red lines from the Status Report admin page.
drush core-requirements --severity=2
Print out a short report in JSON format, where severity 2=error, 1=warning, and 0/-1=OK
drush core-requirements --pipe