Are you sure it's actually missing? Sometimes when you do something that adds a lot of panes to the side panel (e.g. opening a few maps, each of which creates its own Volume Viewer instance), the ChimeraX window can resize to push the command line off the bottom of the screen. Try hitting the maximize button in the corner of the ChimeraX window (or just manually resize/move it) and see if that makes the command line reappear.

From: ChimeraX-users <chimerax-users-bounces@cgl.ucsf.edu> on behalf of mhc128--- via ChimeraX-users <chimerax-users@cgl.ucsf.edu>
Sent: 12 April 2022 13:00
To: chimerax-users@cgl.ucsf.edu <chimerax-users@cgl.ucsf.edu>
Subject: [chimerax-users] Command line disappared

Hello,

I am currently completing a project requiring use of ChimeraX. I'm new to the program, and somehow the command line itself has disappeared for me. I have looked throughout the help section but could not find anything specific on re-enabling the use of the command line. Is there anything I am missing?

Thanks for your time.