Le 31/08/2015 20:27, Reco a écrit : > Hi. > > On Mon, 31 Aug 2015 18:25:09 +0100 > Lisi Reisz <lisi.re...@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 > >
This does nbot say anything aboiut su. Just that systemd was done AGAINST unix and unix users. And thus does noit work well with unix command.