Ruby interpreter name -


possible duplicate:
how find ruby interpreter?

how running ruby 1.8 interpreter name in ruby (e.g. /usr/bin/ruby), i.e. argv[0] passed c main() function. i'm not interested in $0, because that's name of .rb script file. i'm not interested in config::config, because filled when ruby installed -- i'm interested in running now.

let's suppose /usr/bin/ruby symlink /usr/bin/ruby1.8. how know if ruby script has been started /usr/bin/ruby1.8 myscript.rb or /usr/bin/ruby myscript.rb?

see how find ruby interpreter?

require 'rbconfig' ruby_interpreter_path = file.join(config::config["bindir"],                               config::config["ruby_install_name"] +                               config::config["exeext"])

if want ruby specific information check out ruby_* constants

>> ruby_ ruby_copyright     ruby_engine        ruby_platform      ruby_revision ruby_description   ruby_patchlevel    ruby_release_date  ruby_version

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