[chanakya]

I followed installation process. I did not get any error. A folder named opt is created with openfoam30 and paraviewopenfoam44. But when I use code
icoFoam -help
it is showing that icoFoam is not a command. I used the user configuration process first two steps exactly. with a dot for bashrc.

[wyldckat]

Quick answer: I guess you followed the instructions given here: http://www.openfoam.org/download/ubuntu.php

In the section "User Configuration" is explained in detail how to source the script that loads up the OpenFOAM environment.
Nonetheless, please run the following command, so that we can diagnose the problem:

grep "bashrc" ~/.bashrc

[chanakya]

source# ~/.bashrc: executed by bash(1) for non-login shells.
#source /opt/openfoam30/etc/bashrc
# this, if it's already enabled in /etc/bash.bashrc and /etc/profile
# sources /etc/bash.bashrc).
. opt/openfoam30/etc/bashrc

I got this in the terminal. thank you for quick response.

chanakya@chanakya-Inspiron-3542:~$ sudo apt-get install openfoam30
Reading package lists... Done
Building dependency tree       
Reading state information... Done
openfoam30 is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
chanakya@chanakya-Inspiron-3542:~$ sudo apt-get install paraviewopenfoam44
Reading package lists... Done
Building dependency tree       
Reading state information... Done
paraviewopenfoam44 is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

[wyldckat]

Originally Posted by chanakya

source# ~/.bashrc: executed by bash(1) for non-login shells.
#source /opt/openfoam30/etc/bashrc
# this, if it's already enabled in /etc/bash.bashrc and /etc/profile
# sources /etc/bash.bashrc).
. opt/openfoam30/etc/bashrc

I got this in the terminal. thank you for quick response.

Quick answer:

1. You need to edit the file "~/.bashrc" with a text editor.
2. Search for this line:
   

   . opt/openfoam30/etc/bashrc

3. There is a slash character "/" missing before the "opt" name. What I mean is that you need to change that line for this line:
   

   . /opt/openfoam30/etc/bashrc

4. Save and close the file, within the text editor.
5. Start a new terminal window or tab and it should now work as intended.