You can use the show license command to display the installed SLX-OS licenses.
device# show license
Chassis:
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
100G Port Upgrade license
Feature name:PORT_100G_UPGRADE
Capacity: 8
License is Node-Lock and valid
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Advanced Features license
Feature name:ADVANCED_FEATURES
License is Trust Based
EULA acceptance date: Thu Aug 23 02:13:08 2018