Thanks for your reply.

Here's what happened:

comp@AbNormal:~/Downloads/ChimeraX$ sudo apt-get install ./ucsf-chimerax_1.2.5-1_amd64.deb
[sudo] password for comp:
Reading package lists... Done
Building dependency tree������
Reading state information... Done
Note, selecting 'ucsf-chimerax' instead of './ucsf-chimerax_1.2.5-1_amd64.deb'
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
�ucsf-chimerax : Depends: libgfortran3 but it is not installable
���������������� Depends: libllvm3.8 but it is not installable
���������������� Depends: libssl1.0.0 but it is not installable
E: Unable to correct problems, you have held broken packages.
comp@AbNormal:~/Downloads/ChimeraX$

Synaptic didn't find any broken packages. Although I've been using Linux since the Red Hat Mother's Day distribution, I am strictly an Organic Chemist. not a computer person.

On 10/09/2021 08:03 AM, Tristan Croll wrote:
If you're installing a locally downloaded package with apt-get, you need to provide the path to the file (even if it's in your current working directory), i.e.:

sudo apt-get install ./ucsf-chimerax_1.2.5-1_amd64.deb

-- Tristan
From: ChimeraX-users <chimerax-users-bounces@cgl.ucsf.edu> on behalf of Stephen P. Molnar via ChimeraX-users <chimerax-users@cgl.ucsf.edu>
Sent: 09 October 2021 12:50
To: goddard <goddard@sonic.net>; ChimeraX Users Help <chimerax-users@cgl.ucsf.edu>
Subject: Re: [chimerax-users] ProblemI am attempting he installation of ChmimeraX Installing ChimeraX on Debian mv-10
�
An interesting suggestion, but

comp@AbNormal:~/Downloads/ChimeraX$ sudo apt-get install ucsf-chimerax_1.2.5-1_amd64.deb
[sudo] password for comp:
Reading package lists... Done
Building dependency tree������
Reading state information... Done
E: Unable to locate package ucsf-chimerax_1.2.5-1_amd64.deb
E: Couldn't find any package by glob 'ucsf-chimerax_1.2.5-1_amd64.deb'
E: Couldn't find any package by regex 'ucsf-chimerax_1.2.5-1_amd64.deb'
comp@AbNormal:~/Downloads/ChimeraX$

None of the missing packages are available via Synaptic.

On 10/08/2021 04:10 PM, Tom Goddard wrote:
sudo apt-get install ~/Downloads/ucsf-chimerax_1.2.5-1_amd64.deb


-- 
Stephen P. Molnar, Ph.D.
www.molecular-modeling.net
614.312.7528 (c)
Skype:  smolnar1



-- 
Stephen P. Molnar, Ph.D.
www.molecular-modeling.net
614.312.7528 (c)
Skype:  smolnar1