r...@enterprise.herff-jones.com wrote:
> When I use the 'exec' built-in to redirect standard output
> for a script, and then also use explicit redirection on
> other commands, pointing both to the same output file,
> I get unpredictable (but repeatable) results with the
#!/bin/bash
> /tmp/foo
exec 1>/tmp/foo
echo a
echo B>>/tmp/foo
echo c
echo D>>/tmp/foo
echo e
echo F>>/tmp/foo
That script creates two simultaneous writers of /tmp/foo
(one via the "exec >", another via each "echo >>")
but does not provide any concurrency control.
Shame on the script; the resu
