You can't. The open command is a fish function:
/usr/share/fish/functions/open.fish

But all it does is invoking xdg-open or mimedb -l.

So you could write something like this in your bashrc to get the same
thing:

  if which xdg-open > /dev/null
  then
      alias open=xdg-open
  else
      alias open='mimedb -l --'
  fi


On Tue, Sep 02, 2008 at 04:11:58AM -0700, Good Bad wrote:
> how can i use fish's open command in other shells such as bash?
> 
> 
>       
> 
> 
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