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) 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 -- Stephen J Smoogen.