[LBo] "Who" command

[Geoff Jones]

Stefan wrote:-
> > I get this (on Ubuntu Edgy):
> > stw at laptop:~$ LANG=C who -H
> > NAME     LINE         TIME         COMMENT
> > stw      :0           Nov 22 10:28
> > stw      pts/0        Nov 22 20:22 (:0.0)
> > stw      pts/1        Nov 22 20:24 (:0.0)
> >
> >
> > So, you :0 and :20 are the "lines" through which you are connected to
> > the system. I'd guess root is logged in as root, and geoff is connected
> > via X11 across the net? Maybe?

Not sure that "lines" is the problem - I am just copying the "who - write" 
example in Chap 4 and if I log into Ubuntu with 2 shells can do :-

geoff at ubuntu:~$ who
geoff    :0           2006-11-22 22:49
geoff    pts/1        2006-11-22 22:50 (:0.0)
geoff at ubuntu:~$ write geoff pts/2
Hello world
geoff at ubuntu:~$ 


geoff at ubuntu:~$ who
geoff    :0           2006-11-22 22:49
geoff    pts/1        2006-11-22 22:50 (:0.0)
geoff    pts/2        2006-11-22 22:51 (:0.0)
geoff at ubuntu:~$ 
Message from geoff at ubuntu on pts/1 at 22:51 ...
Hello world

geoff at ubuntu:~$ EOF

The same thing in Deb_Etch as single user with 2 shells gives :-

geoff at debian:~$ who
geoff    :0           2006-11-22 23:00
geoff at debian:~$ tty
/dev/pts/3
geoff at debian:~$


geoff at debian:~$ who
geoff    :0           2006-11-22 23:00
geoff at debian:~$ tty
/dev/pts/4
geoff at debian:~$ write geoff pts/3
write: geoff is not logged in on pts/3
geoff at debian:~$

It's not a problem as such - I would just like to know why I am getting 
different behaviour from 2 similar distro's ?

Geoff.