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Editorial Team
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Asked: 2026-05-30T19:29:18+00:00

I would like ruby scripts with the header #! /usr/bin/ruby to execute using the

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I would like ruby scripts with the header #! /usr/bin/ruby to execute using the currently in use rvm version of ruby. I run into the issue where I am using a given version but upon executing the script the system ruby is invoked. Installing RVM for every user on the system is not an option.

Problem:

ruby -v
ruby 1.9.3p0 (2011-10-30 revision 33570) [x86_64-darwin11.3.0]

/usr/bin/ruby -v
ruby 1.8.7 (2010-01-10 patchlevel 249) [universal-darwin11.0]

How to make it the following without performing a system wide install of RVM?

ruby -v
ruby 1.9.3p0 (2011-10-30 revision 33570) [x86_64-darwin11.3.0]

ruby -v
ruby 1.9.3p0 (2011-10-30 revision 33570) [x86_64-darwin11.3.0]
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1 Answer

  1. Editorial Team

    If you do which ruby, you’ll find that RVM’s ruby does not lie at /usr/bin/ruby. Instead use:

    #!/usr/bin/env ruby

    This will tell it to look up which ruby to use in the current environment (essentially the $PATH).

    You could also execute your script via ruby itself: ruby myscript.rb

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