PHWinfo - Afficher un message - reversing the if condition in posix shell

01/11/2006, 17h23

Stephane CHAZELAS wrote:

> I'm not sure about initial versions of ash.

It came with 44BSDalpha, that is,
when ash started aiming at POSIX.

> ! foo | bar
> reverses the "foo | bar" status.

That's why calling it "negation of pipeline"
(a command is only a special case of a pipeline)
is the both correct and to the point.

01/11/2006, 17h23	#3
Sven Mascheck Messages: n/a Hébergeur:	Re: reversing the if condition in posix shell Stephane CHAZELAS wrote: > I'm not sure about initial versions of ash. It came with 44BSDalpha, that is, when ash started aiming at POSIX. > ! foo \| bar > reverses the "foo \| bar" status. That's why calling it "negation of pipeline" (a command is only a special case of a pipeline) is the both correct and to the point.