Using Zenity with Ruby to show the use of the progress bar

IO.popen_example.rb

#!/usr/bin/ruby



def service_agent
    e = IO.popen('zenity --height=250 \
    --list \
    --checklist \
    --column "restart" \
    --column "service" \
    TRUE mysql TRUE apache2 FALSE postfix FALSE puppet'
    ).each{|i|     
        choice = i.split('|')
        choice.each{ |s|   block_given? ? (yield s) : (`zenity \
        --error \
        --text="No Block Given"`) }    
    }
end


service_agent{|service|
    IO.popen("service #{service.chomp} restart | zenity \
    --progress \
    --pulsate \
    --auto-close \
    --text=\"Restarting #{service.chomp}\""
    ).each{|po| puts po}
}