[BenAsbo626]

Hi,

Apologies if I don't give enough information but I will do my best. I'm new to OpenFoam and Ubuntu as a whole.

I have install OpenFOAM 2.3.0 on Ubuntu 18.04 by using the OpenFOAM 2.3.1 installation walkthrough given here:

http://openfoamwiki.net/index.php/In...u#Ubuntu_18.04

All seemed to go well. I didn't get any errors.

Now I've started through the v6 tutorials given here:

https://cfd.direct/openfoam/user-guide/v6-cavity/

I've gotten to the point of trying postProcessing.
I used to command:

postProcess -list

and the error greeting me was:

Command 'postProcess' not found, but can be installed with:

sudo apt install openfoam

Which I installed. (I found this confusing but thought it couldn't damage the progress I had already made, as seems that it hasn't).
However now, upon using the command:

postProcess -list

I get the following error:

postProcess: symbol lookup error: postProcess: undefined symbol: _ZN4Foam9UOPstream5writeEl

I have googled the error to try and figure it out and it seems like most symbol lookup errors are library issues. But as I'm so novice, I'm not sure what this means or how to fix it. It seems confusing that it doesn't even want to perform the list command which makes me wonder if its an installation error.

I don't think it would be a library error as I've not started messing with libraries yet so I can't have incomplete libraries causing this error. The only thing I can think it might be is that the installation of OpenFOAM was incomplete and postProcessing was not fullying installed. But by performing an install, that should of fixed it?

Any help or information would be helpful and the more ELI5 the better for me (the novice) to understand.
Thanks,
Ben