> 2)  Are executables somehow shareable (or the equivalent) by default?
>
Yes, "-z" behaviour is in fact the default for ld. It sets up the executable
in such a way that multiple invocations share the text pages in memory (i.e.,
"demand paged").


> 3)  If not, how would I make a shareable executable?  The sticky(8)
> man page says to use "ld -n -z", but ld doesn't recognize -n.

These options are mutually exclusive. Only `-z' will cause the executable
to be run in demand paged mode. `-n' (and `-N') will cause the both text
and data to read into memory in private pages (see a.out(5)).

Oh, and there isn't actually a sticky(8) command on the system. I guess
this manual page should be moved into another section..

-pk