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Old   June 24, 2013, 00:14
Default OpenFOAM refuses to start
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Madhukara Putty
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Hi,

A couple of days ago, I installed OpenFOAM by following the instructions given here. I didn't have any issues in getting started. However, when I try it today, I have the following issues:

1.
Code:
mkdir -p $FOAM_RUN
throws up the error
Code:
mkdir: missing operand
2. icoFoam -help, blockmesh, icoFoam, and paraFoam commands throw up the error
Code:
command not found
.

The last line in .bashrc file is (as suggested in the aforementioned link):
Code:
source $HOME/.bashrc
Also, I am quite sure that I have taken into account the case sensitiveness of the commands.

I appreciate any help in getting me started with OF.


Thanks in advance!

Madhukar
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Old   June 24, 2013, 02:53
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Quote:
The last line in .bashrc file is (as suggested in the aforementioned link):
source $HOME/.bashrc
In the link you provided, the last line of .bashrc is different (check "User configuration", step 2). In your version, .bashrc is sourcing itself.
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Old   June 24, 2013, 02:58
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Daniel Pielmeier
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Quote:
Originally Posted by kotimari View Post
The last line in .bashrc file is (as suggested in the aforementioned link):
Code:
source $HOME/.bashrc
Also, I am quite sure that I have taken into account the case sensitiveness of the commands.
If you take a closer look into the document you mentioned you will find that the last line should be:

Code:
source /opt/openfoam220/etc/bashrc
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Old   June 24, 2013, 05:36
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Madhukara Putty
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I like to run icoFoam in the same terminal window. So I followed the instructions in Note 2 (in the same link).
However, I tried your path too, but in vain.

Last edited by kotimari; June 24, 2013 at 05:37. Reason: added link info.
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Old   June 24, 2013, 05:48
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It is a bit confusing at first, you are right.

The following line
Quote:
source /opt/openfoam220/etc/bashrc
should be written inside the file ~/.bashrc, NOT written in the terminal!

The following line
Quote:
source $HOME/.bashrc
allows you to reload the .bashrc file. You do NOT need to do this!

All you need to do is to write the first command in the file and to restart your terminal session. Just forget about the second command!

Last edited by startingWithCFD; June 24, 2013 at 05:50. Reason: Some formating was removed for unknown reason.
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Old   June 24, 2013, 05:53
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Daniel Pielmeier
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Quote:
Originally Posted by kotimari View Post
I like to run icoFoam in the same terminal window. So I followed the instructions in Note 2 (in the same link).
However, I tried your path too, but in vain.
There is a misunderstanding on your side.

Add:
Code:
source /opt/openfoam220/etc/bashrc
to your users .bashrc which is normally located in your home directory thus the $HOME prefix.
$HOME/.bashrc translates to /home/<yourusernamehere>/.bashrc

then if you want to execute icoFoam in the same terminal window execute:
Code:
source $HOME/.bashrc
You can as well open a new terminal and the environment for openfoam is sourced by your .bashrc and you can execute icoFoam without sourcing it, as this is the point of putting it in your .bashrc.

If you are new to Linux it is probably a good idea to acquire some basic Linux knowledge first.
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Old   June 25, 2013, 07:08
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Madhukara Putty
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Thanks for the replies. I get your point. Will try your suggestions once I get access to my laptop during this weekend.

I am not new to Linux per se, but editing bashrc file is a new thing indeed!

Madhukar
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