On 2019-10-22 12:20, Stephen John Smoogen wrote: > On Tue, 22 Oct 2019 at 12:55, Valeri Galtsev <galtsev at kicp.uchicago.edu> wrote: >> >> Hello Experts! >> >> I'm sure many of you run CentOS for some time already. >> >> My question is: is there some place that lists which of the most often >> used sysadmin commands are gone and what are replacements for them. Or >> what else one needs to do after successful installation. (in the past it >> was process accounting that was not enabled by default, but which gives >> you quite some handle in investigating compromise). >> >> I just tried quite ordinaly command of freshly installed CentOS 8: >> >> last >> >> and got an error: >> >> last: (default utx db): No such file or directory >> > > Huh. When I run it I got > > [root at localhost ~]# last > root pts/0 192.168.1.15 Sat Oct 19 15:42 still logged in > reboot system boot 4.18.0-80.11.2.e Fri Oct 18 09:39 still running > root pts/1 192.168.1.15 Thu Oct 17 14:16 - 09:38 (19:22) Indeed, as I suspected, it was just me. Really stupid thing: I shuffled two hostnames (one was freshly installed CentOS 8 machine, another was jail inside some FreeBSD machine...). Puzzle solved, but thanks to that I'm reading RedHat's document about what's new in RedHat 8 compared to 7, - Thank you, Leon, for link in your reply! Valeri > smooge pts/1 192.168.1.15 Fri Oct 4 18:14 - 13:24 (12+19:10) > smooge pts/1 192.168.1.15 Fri Oct 4 09:02 - 09:09 (00:06) > smooge pts/1 192.168.1.15 Thu Oct 3 16:31 - 16:46 (00:14) > smooge pts/2 192.168.1.15 Mon Sep 23 17:23 - 09:05 (15:41) > smooge pts/1 192.168.1.15 Sat Sep 21 14:45 - 10:36 (5+19:51) > smooge pts/1 192.168.1.15 Thu Sep 19 17:04 - 17:05 (00:01) > smooge pts/1 192.168.1.15 Mon Sep 16 13:06 - 17:02 (03:55) > smooge tty2 tty2 Thu Sep 12 12:43 - down (35+20:55) > reboot system boot 4.18.0-80.el8.x8 Thu Sep 12 12:33 - 09:38 (35+21:05) > > In el7 it used to be in this package: > [smooge at batcave01 ansible (master)]$ rpm -qf /usr/bin/last > sysvinit-tools-2.88-14.dsf.el7.x86_64 > > And in el8 it is in > [root at localhost ~]# rpm -qf /usr/bin/last > util-linux-2.32.1-8.el8.x86_64 > > The wtmp file is owned by > [root at localhost ~]# rpm -qf /var/log/wtmp > systemd-239-13.el8_0.5.x86_64 > > However as you can tell from above this system has been installed for > a bit so I am guessing whatever creates wtmp hasn't happened? > >> I realize that it could be just me, and I'll cope with that myself one >> way or another but this one prompted me to ask everybody: Is there >> anything I can read so I can learn what differenmt to expect on CentOS 8 >> from, say, CentOS 7? >> >> Thanks. >> Valeri >> >> ++++++++++++++++++++++++++++++++++++++++ >> Valeri Galtsev >> Sr System Administrator >> Department of Astronomy and Astrophysics >> Kavli Institute for Cosmological Physics >> University of Chicago >> Phone: 773-702-4247 >> ++++++++++++++++++++++++++++++++++++++++ >> _______________________________________________ >> CentOS mailing list >> CentOS at centos.org >> https://lists.centos.org/mailman/listinfo/centos > > > -- ++++++++++++++++++++++++++++++++++++++++ Valeri Galtsev Sr System Administrator Department of Astronomy and Astrophysics Kavli Institute for Cosmological Physics University of Chicago Phone: 773-702-4247 ++++++++++++++++++++++++++++++++++++++++