Re: redirection tricks on processor invocation

[Laurent Bercot <ska-supervision@skarnet.org>]

> A week later, I've been unable to translate this simple execline snippet
> to shell syntax. I can't figure out a way to workaround the fact that
> shell pipes are created before redirection. Any hints?

 Your problem is that the shell can't open anonymous fds. The only way
to get an anonymous pipe is the | construct, which does not open more fds
because it's redirected at once to 1 and 0.
 The multitee command needs one more fd to be opened, and you can't do
that with anonymous pipes. You need a named pipe for this:

 mkfifo /tmp/fifo ;
 yourapplication </tmp/fifo &
 exec 7>/tmp/fifo multitee 0-1,7

 Inelegant? Unsatisfying?
 Go forth, o my convert, and preach the virtues of execline. :)

-- 
 Laurent