From: Justin Collins <justincollins@...>
Date: 2007-11-13T02:16:53+09:00
Subject: Re: Problem installing ruby in linux virtual machine

Max Williams wrote:
> I'm running a linux virtual machine on my windows pc, and am trying to
> install ruby.  i've used apt-get, like so:
>
>   apt-足get install ruby ri rdoc mysql足server libmysql足ruby
>
> now, ruby is *there* but not installed.  ie
>
>   whereis ruby
>    => ruby: /usr/bin/ruby /usr/lib/ruby /usr/share/man/man1/ruby.1.gz
>
> but when i try to use ruby i get:
>
>   ruby hello_world.rb
>    =>The program 'ruby' is currently not installed.  You can install it
> by
>   typing:
>   apt-get install ruby
>
> This happens even if i navigate to /usr/bin/ruby first.  (btw if i do
> "apt-get install ruby" i'm told it's already installed).
>
> I've tried adding the above folder to my path as follows:
>
> in ~/.bashrc
>
>   export PATH=/usr/bin/ruby:.:$PATH
>
> Can anyone see what i've done wrong?  Could this be because it's in a
> virtual machine?  (i don't see why but i'm new to this stuff)
>
> thanks
> max
>   
Did you try specifying the whole path to Ruby? In other words:

/usr/bin/ruby hello_world.rb

You might also try

which ruby

and see if that returns the right path.
I also believe you need to specify the path in .bashrc, not the file:

export PATH=/usr/bin/:$PATH


Although /usr/bin should bin in your path already. Can you run other 
programs from there?
Is /usr/bin/ruby set to be executable?


-Justin