Torch / Lua after installation is not working

Question

I have followed the following approach in order to install Torch in my machine (Mac).

http://torch.ch/docs/getting-started.html#_

When I am done with the installation, I type:

$ luarocks install image or $ luarocks lis

or $th

in order to load the th or to make updates on the lua packages. It says "command not found". Do you have any idea how I can resolve this issue?

Answer 1

If you're on a Mac using the bash terminal, make sure that you've permanently added /Users/you/torch/install/bin to your PATH.

To do this:

1. Navigate in your terminal to the root directory by running the command:

   $ cd
   

2. Using the text editor of your choice (emacs, vim, etc.) open the .bash_profile file for editing. For example:

   $ emacs .bash_profile
   

3. Add the following line to the end of the file (replacing 'you' with your Mac username):

   PATH=$PATH\:/Users/you/torch/install/bin ; export PATH
   

4. Save and exit the text editor
   
   

5. Source the changes by running:

   $ source .bash_profile
   

6. Check that your PATH has been updated (look for /Users/you/torch/install/bin in the string returned):

   $ echo $PATH
   

7. To make sure it has been changed permanently, completely quit Terminal, open it and run echo $PATH again

8. Now try th and it should run Torch!

For more help on PATH: https://kb.iu.edu/d/acar

The Torch installation (at least for me) added the line . /Users/jb/torch/install/bin/torch-activate to my .profile file, not .bash_profile. I tried adding that exact line to .bash_profile but it didn't work, so based on the recommendations here I got rid of the trailing directory and such.

Answer 2

Have you updated your PATH? It should include something like

/home/user/torch/install/bin

Answer 3

I faced the same issue and following this post deleted and reinstalled everything. However in the end what helped was adding /home/user/torch/install/bin/ to the PATH variable.