How to open a file in sh-mode

[Francis Moreau]

Hello,

I'm trying to open a file with emacs automatically set on sh-mode.
The file name can't be used to guess that emacs should be in sh-mode
when opening it.

So I tried:

$ emacs -f sh-mode foo

But that doesn't work.

Could anybody give me some advices ?

Thanks
-- 
Francis