Added example filter for Linux of GitHub Actions.

spec/bundler/commands/exec_spec.rb

@@ -55,7 +55,7 @@ RSpec.describe "bundle exec" do
     expect(out).to eq("hi")
   end
 
-  it "respects custom process title when loading through ruby" do
+  it "respects custom process title when loading through ruby", :github_action_linux do
     script_that_changes_its_own_title_and_checks_if_picked_up_by_ps_unix_utility = <<~RUBY
       Process.setproctitle("1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16")
       puts `ps -eo args | grep [1]-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16`

spec/bundler/spec_helper.rb

@@ -74,6 +74,7 @@ RSpec.configure do |config|
   config.filter_run_excluding :bundler => RequirementChecker.against(Bundler::VERSION.split(".")[0])
   config.filter_run_excluding :ruby_repo => !(ENV["BUNDLE_RUBY"] && ENV["BUNDLE_GEM"]).nil?
   config.filter_run_excluding :no_color_tty => Gem.win_platform? || !!ENV["GITHUB_ACTION"]
+  config.filter_run_excluding :github_action_linux => !!ENV["GITHUB_ACTION"] && (ENV["RUNNER_OS"] == "Linux")
 
   config.filter_run_when_matching :focus unless ENV["CI"]