[chimerax-users] Change the directory for data fetched from databases

[Tom Goddard]

Hi Guillaume,

  There is no setting to change the location where ChimeraX caches fetched files.  It is always

	~/Downloads/ChimeraX

On a multi-user workstation is the idea that every person would change the ChimeraX setting to point to a common cache directory?  Will people cooperate with that?  Each person of course has their own ChimeraX settings.  Everyone will also need write access to that directory.  There are no site-wide settings in ChimeraX.

You could modify the ChimeraX application file, a file in the distribution (here's the path for Linux)

	chimerax/lib/python3.9/site-packages/chimerax/core/fetch.py

making

	_cache_dirs = ['/usr/local/chimerax_fetch']

near the top would I think change to use that directory.  Of course each time you install a new ChimeraX it would need such a change, and if individual users install their own ChimeraX version it will use ~/Downloads/ChimeraX.

	Tom


> On Dec 16, 2021, at 2:08 AM, Guillaume Gaullier via ChimeraX-users <chimerax-users at cgl.ucsf.edu> wrote:
> 
> Hello,
> 
> The documentation for the open command says "Web-fetched data are stored locally in ~/Downloads/ChimeraX/ (where ~ indicates a user's home directory)". Is there a way to change this directory? I couldn’t find one in the settings window, but maybe a command could do that? (in that case I would simply need to add this command to the startup commands).
> 
> The use case I have in mind is to share the ChimeraX cache between all accounts on a multi-user workstation (so, relocate the cache at some place like /data/ChimeraX).
> 
> Thank you,
> 
> Guillaume
> 
> 
> 
> 
> 
> 
> 
> 
> 
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