example of external program execution from zope

[shagshag13]

hello,

(sorry if this isn't the right place to post)

i'm looking for examples of external program executions from zope or even
examples of zope object wrapping external programs and catching output,
i'm really interested in any ressources or links, and don't know where to
start search (google didn't help me this time)

thanks in advance,

s13.