Then the CMS version should start with "6"

Assert the version of the CMS that the System Information page reports. "be" compares the whole version ("6.2.0"), "start with" a part of it ("6" or "6.2").

Examples

Then the CMS version should start with "6"
Then the CMS version should be "6.2.0"
Then the CMS version should start with "6.2"
And the CMS version should not start with "3"
Then the CMS version should not be "4.0.0"

Pattern

Then(/^the CMS version should( not)* (be|start with) "([^"]*)?"$/, …)

Part of @webship-js/joomla-steps (github.com/webship/joomla-steps), a step pack for Webship-js 2.0.x.