Date: Sun, 01 Nov 1998 23:48:28 +0000 From: Brian Somers <brian@Awfulhak.org> To: "John W. DeBoskey" <jwd@unx.sas.com> Cc: green@zone.syracuse.net (Brian Feldman), freebsd-current@FreeBSD.ORG Subject: Re: Changing sh for compatibility sake Message-ID: <199811012348.XAA29687@woof.lan.awfulhak.org> In-Reply-To: Your message of "Sun, 01 Nov 1998 11:56:31 EST." <199811011656.LAA14169@bb01f39.unx.sas.com>
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> Hi,
>
> I sent mail to this list a few months ago... pdksh doesn't run
> the tail-end of a pipe in the current shell environment, thus the
> following doesn't work as expected:
>
> export FOUND=0
> ls | wc -l | while read fcnt; do
> export FOUND=$fcnt
> done
> echo $FOUND
[.....]
The *only* shell I've ever seen that does this is the original ksh.
I think it's a *great* feature, but it's also non-standard. With it,
you can also
echo hello there | read a b
and get $a and $b back. Certainly, any version of sh, ash, zsh, bash
and pdksh that I've seen execute everything in the pipe in a subshell.
--
Brian <brian@Awfulhak.org>, <brian@FreeBSD.org>, <brian@OpenBSD.org>
<http://www.Awfulhak.org>;
Don't _EVER_ lose your sense of humour....
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