Is there a way to add a license to the Quest Application Configuration using the command line instead of the control center?
Yes you can use the the 'vastool license add' command to add the license to the Quest Application Configuration (QAC) which is a container in AD that stores product information.
Additionally the username with permission to add the license is also required. A full command may look more like this:
/opt/quest/bin/vastool -u admin license add licensefile.txt
Please NOTE: The machine should be joined to Active Directory prior to running this command or the default realm should be populated in the vas.conf for the command to complete successfully.