You will be asked for your billing information. Once that's processsed, you will be taken to a page where you will see your license key. You can then use that license key to unlock codescrubber. You license key will also be E-mailed to you.

You use the Ubuntu package manager and install codescrubber via the command line.

Your license key allows you to execute codescrubber an unlimited number of times on projects of unlimited size. You can install codescrubber on as many machines as you like, but you cannot share your key with any other persons. Your license key is valid for month.

Yes, you may. However, you cannot use the same license key on your Continuous integration environment and your local machine. codescrubber will not function properly if you do this.

codescrubber currently runs on linux Ubuntu 14 and Ubuntu 16 systems.

Yes, you may download codescrubber for evaluation purposes. If you keep using codescrubber indefinitely, you must buy a license key. If you use it indefinitely without a license, codescrubber will not function properly.