# File lib/phusion_passenger/config/utils.rb, line 73
        def list_all_passenger_instances(server_instances)
                puts "The following #{PROGRAM_NAME} instances are running:"
                server_instances.each do |instance|
                        begin
                                description = instance.web_server_description
                        rescue Errno::EACCES, Errno::ENOENT
                                description = nil
                        end
                        printf "  PID: %-8s   %s\n", instance.pid, description
                end
        end