Re: GNU shellery

[uwe%stderr.spb.ru@localhost (Valery Ushakov)]

coypu%sdf.org@localhost wrote:

> reversing lines currently:
> BSDs: tail -r
> GNU: tac
> 
> Anyone writing portable code: sed '1!G;h;$!d'
> (Yes that actually works)
> 
> Attached diff adds a hard link tac (need set lists adjusted though, and
> I have a man page). it doesn't add any of the GNU tac options.

It doesn't work the same for multiple files.

$ echo a > 1 
$ echo b > 2
$ tac 2 1
b
a
$ tail -r 2 1
==> 2 <==
b

==> 1 <==
a

-uwe