as others suggested you can do the following:

Link = directly to your ruby executable:

#!/usr/bin/ruby

This line is called the shebang line, whenever your c= omputer tries to read a script, this line tells the computer what program t= o run this script with. If you shebang to your ruby program directly, there= is no issue. But if you share the code, or install ruby to a different dir= ectory later on, you have to change the line, some people might be using RV= M, or have it installed in #!/usr/local/bin/ruby instead. So we use the ENV= program to find the appropriate version of ruby in the PATH. #!/usr/bin/en= v ruby says use the ruby that is returned by the env program. this way ENV = returns the ruby that is set for use in your systems path. This changes com= puter to computer, so it is the most standard way of writing the shebang li= ne to make sure your code works on multiple machines. #!/usr/bin/env just d= umps your entire environment.

To see what I mean, type env in terminal an= d console. Then type env ruby and see what happens.

Cheers,

Richard

On Wed,= Jun 26, 2013 at 9:04 PM, Duong Quang Ha <quangduongha@gmail.com&= gt; wrote:

Hello,

Shebang line should like "#! /usr/bin/env ruby" or "#! <p= ath to your
ruby VM i.e /usr/bin/ruby>". This line tell shell which program to<= br> run.

Regards,

On Thu, Jun 27, 2013 at 10:58 AM, Todd Sterben <lists@ruby-forum.com> wrote:
> I am new to both linux and ruby. =C2=A0I am using Ubuntu and Ruby 1.9<= br> >
> When I do which ruby, I get /usr/bin/ruby
> When I do ruby -v I get ruby 1.9.3p0 (2011-10-30 revision 33570)
> [i686-linux]
>
> When I try to kick off a simple script
>
> =EF=BB=BF#!/usr/bin/env
>
> puts "Hello"
>
> I get
>
> ./test.rb: line 1: =EF=BB=BF#!/usr/bin/env: No such file or directory<= br> > ./test.rb: line 4: puts: command not found
>
>
> Why?
>
> Thanks
>
> Todd
>
> --
> Posted via ht= tp://www.ruby-forum.com/.

--
Duong Quang Ha (H=C3=A0 Quang D=C6=B0=C6=A1ng in Vietnamese)
blog.haqduong.com

Richard Wilson

Proteous Trading Group

ph. - (604) 842 5318

Skype - r.crawfordwilson

email - r.crawfordwilson@gmail.com

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