On Tue, May 18, 2010 at 6:28 PM, Pen Ttt <myocean135 / yahoo.cn> wrote:
> ruby1.8 and ri1.8 were installed in my computer ,there is strange thing
> :
> pt@pt-laptop:~$ ri array
> The program 'ri' is currently not installed. You can install it by
> typing:
> sudo apt-get install ri
>
> when i input
> pt@pt-laptop:~$ ri1.8 array
> lots of output which is what i want
> can i change ri1.8 in shell command to ri in my computer?
> --

Well, if you install the 'ri' package in Ubuntu it installs a symbolic
link for ri that points to ri1.8.  If you don't want to do that, you
could always make the symbolic link yourself:

sudo ln -s `which ri1.8` /usr/local/bin/ri
(note those are backticks, not quotes)

-Jonathan Nielsen