Hi. On Mon, 31 Aug 2015 18:25:09 +0100 Lisi Reisz <[email protected]> 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
