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script/runner script that doesn’t require an absolute path

kludgebox:

the output from Rails’ script/runner -h says you can create custom scripts with a fancy shebang line:

You can also use runner as a shebang line for your scripts like this:
-------------------------------------------------------------
#!/usr/bin/env /Users/bob/Projects/glowworm/script/runner

Product.find(:all).each { |p| p.price *= 2 ; p.save! }
-------------------------------------------------------------

but I hate the idea of hardcoding a path like that. Here’s a workaround: open up your new script, something like script/my_custom_script and fill it like so

#!/usr/bin/env ruby
unless $0 =~ /runner/
  system("#{File.dirname(__FILE__)}/runner", __FILE__)
  exit 0
end

puts 'your code goes here'

Nice idea! Here’s my take on it:

#!/usr/bin/env ruby
exec(File.join(File.dirname($0), "..", "runner"), __FILE__) unless File.basename($0) == 'runner'

puts 'your code goes here'