octave - xv - image viewer

[lmhelp]

Hi,

Thank you for reading my post.

I have installed "octave" and "xv".
Both of them work correctly.

I want to use "xv" as "octave"'s image viewer.

I read one should use a command such as:
image_viewer("xv");

My problem is the following:
where does this command has to be executed?
- At "octave"'s command line?
- In a "~/.octaverc" file?
- ...

And... if it was not too much asking, could you post me your 
"~/.octaverc" file because I have none and cannot find any 
sample on the Internet .

Thank you for you help in advance ,
all the best,
--
Lmhelp
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