Function execute 

pub fn execute<I, S>(sioe: &RunnelIoe, prog_name: &str, args: I) -> Result<()>
where
    I: IntoIterator<Item = S>,
    S: AsRef<OsStr>,

execute ps-mem

params:

• sioe: stream in/out/err
• program: program name. etc. “ps-mem”
• args: parameter arguments.

return:

• ok: ()
• err: anyhow