How to create a button with an sh command?

how to create a button with an sh command?
i want to use this command for example hs100.sh 192.168.1.20 9999 on
i have install exec binding
but please can you explain how to use it?
thank you

Full documentation of the Exec binding is here:

Switch Command {exec="<[hs100.sh@@192.168.1.20@@9999]"}

Full documentation for the Sitemap is here:

Switch item=Command mappings=[ON="Execute"]

Why are you asking this twice?
Answer was given already: