Re: Another system management tool to disappear.
Hi.
On Mon, 31 Aug 2015 18:25:09 +0100
Lisi Reisz <lisi.reisz@gmail.com> wrote:
> On Monday 31 August 2015 16:59:48 Nicolas George wrote:
> > Le quartidi 14 fructidor, an CCXXIII, Lisi Reisz a écrit :
> > > For those who have still not discovered, you have to press ^ three times
> > > in succession inside a second.
> > >
> > > https://tlhp.cf/lennart-poettering-su/
> >
> > Are you referring to that snippet:
> >
> > # Connected to the local host. Press ^] three times within 1s to exit
> > session.
> >
> > ... or are you referring to other parts of the page that I missed or parts
> > in the video?
> >
> > If you are referring to that snippet, I suspect you are reading it wrong.
> >
> > For once, it is "^]", i.e. Ctrl-], i.e. ASCII 0x1D, aka "group separator".
> >
> > You can notice it is the same as the "escape character" present in most
> > telnet implementations.
> >
> > And my second point is: it is obviously meant for emergency exit, like
> > tilde-point in SSH. You should need it almost never in normal use, where
> > you exit either by typing the command "exit" or by sending the EOF code
> > (usually Ctrl-D), just like su.
> >
> > Actually, AFAIK neither sudo nor su support an emergency exit sequence. If
> > that has not bothered you until now, it should not bother you from now on
> > either.
>
> Then I have misunderstood, which does not surprise me.
>
> What is the alternative to su that there is so much fuss about? And I don't
> care about the session ending function it apparently has. <su> will change
> me to root and <su $USER> will change me to the user. Is that what people
> fear will disappear? And what do they fear will be put in its place? (Yes,
> I understand that so far it is in addition, not instead of, but what is the
> fuss about? What has Lennart proposed?)
It's really simple.
1) Boot with init=/bin/sh kernel commandline.
2) Invoke su - <some_user>. Observe the result.
3) Invoke "machinectl shell". Observe the result.
4) Compare results from 2) and 3).
Reco
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