You can start Comsol with the following short commands

Version 6.2: ''comsol61''\\
Version 6.1: ''comsol61''\\
Version 6.0: ''comsol60''\\
Version 5.6: ''comsol56''\\
Version 5.5: ''comsol55''\\

You can start Your Comsol script (*.mph file) with the following generic command:\\
''comsol.batch inputfile.mph''

Hint: 
For the usage of this generic job script ''comsol.batch inputfile.mph'' You need the right comsol environment in Your account.

If the comsol environment ist not (!) set permanently in Your Account please set the right comsol version in Your current terminal with the command:
''module purge; module load comsol/v61''

Please check upcoming comsol events here: 
[[https://www.comsol.de/events|Comsol Events]]

note 1: \\
please avoid to use the CAD Import toolbox license:\\
Goto ''Options >> Preferences >> Geometry >> 3D geometry representation >> In new geometries''\\
and change to ''COMSOL kernel''