/usr/bin/ruby

[mserms]

At the top of a ruby script I include a path to my ruby executable:


#! /usr/bin/ruby


However, on another machine, that path could be /xxx/yyy/ruby (or c:\ruby...).

Is there a way for a script to know the path for the machine that it is running on, so that an app is more portable?

[rob]

This works well for that purpose:

#!/usr/bin/env ruby

This executes the Ruby interpreter as long as its properly installed no matter where it is (on UNIX/Linux that is). Not sure how to do this on Windows.

[rob]

As a note about Windows, I figured out that if the .rb extension is installed properly, as it is with the Ruby installer for Windows, then running a .rb file should work, no matter what the shebang is.

[mserms]

As a note about Windows, I figured out that if the .rb extension is installed properly, as it is with the Ruby installer for Windows, then running a .rb file should work, no matter what the shebang is.

Ah, cool! Your two answers combined should make it all good then - thanks!