💎 Update rubygems and bundler for all installed (via asdf) ruby versions.

README.md

Usage

$ asdf list ruby
  2.7.4
  2.7.5
  2.7.6
  3.0.3
  3.1.2
  3.2.0-preview1

$ update-rubygems-bundler
----> Start rubygems and bundler update
      Current Ruby version: 3.1.2
      Target Ruby versions: 2.7.4, 2.7.5, 2.7.6, 3.0.3, 3.1.2, 3.2.0-preview1
----> 2.7.4: Updating ruby gems and bundler
      Done.
----> 2.7.5: Updating ruby gems and bundler
      Done.
----> 2.7.6: Updating ruby gems and bundler
      Done.
----> 3.0.3: Updating ruby gems and bundler
      Done.
----> 3.1.2: Updating ruby gems and bundler
      Done.
----> 3.2.0-preview1: Updating ruby gems and bundler
      Done.

that's all. 🎉

update-rubygems-bundler

#!/usr/bin/env ruby

require "shellwords"

puts "----> Start rubygems and bundler update"

# store current ruby version
current_version = `asdf current ruby | cut -w -f 2`.strip
puts "      Current Ruby version: #{current_version}"

# update rubygems and bundler for each installed versions
versions = `asdf list ruby`.split("\n").map(&:strip)
puts "      Target Ruby versions: #{versions.join(", ")}"
versions.each do |version|
  puts "----> #{version}: Updating ruby gems and bundler"
  `asdf global ruby #{version.shellescape}`
  `gem update --system`
  puts "      Done."
end

# restore ruby version
`asdf global ruby #{current_version.shellescape}`