Re: POSIX shell specification insight requested
On Tue, 2 Mar 2004, Adam Heath wrote:
> On Tue, 2 Mar 2004, Manoj Srivastava wrote:
> > § 3.6.3 Command substitution
> > ...
> > lines 474-477
> > Within the $(command) form, all characters following the open
> > parenthesis to the matching closing parenthesis constitute the
> > /command/. Any valid shell script can be used for /command/, except
> > -- A script consisting solely of redirections produces unspecified
> > results
> You need to show us what posix defines as a command.
For instance, I don't understand how a script that contains only redirections
can be a command. Ie:
1>&2 2>&3 3>&4