This is an example from an old version of mgetty, 0.99.2-7, and as such it
is not kept up to date. It just serves to illustrate how to use debstd
with multi-binary packages (and nothing else: in particular, you should of
course not create temp files the way the postinst did in mgetty_0.99.2-7,
for this you may use tempfile instead, from debianutils).