Re: Help on pipe

Micha³ Nazarewicz wrote:

> >     waitpid(pid, &ret, 0);
> >     close(fds[1]);
> 
> No need to close.

There definitely is a need to close, but it should be fclose(stream)
*before* the waitpid(). As David points out, sort won't terminate
until it has finished reading its input.

David Lee wrote:

> The sort program is waiting for an EOF (^D).

Ctrl-D isn't EOF unless you're reading from a terminal. The TTY driver
"sends EOF" (i.e. causes read() to return a zero count) when you press
Ctrl-D (by default) if the driver is in canonical mode. Ctrl-D doesn't
have any significance in other contexts.

-- 
Glynn Clements <[email protected]>
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